[JitDiff X64] [xtqqczze] Refactor SQLDateTime constants

[MihuBot]

Job completed in 16 minutes 43 seconds (remote runner delay: 47 seconds).
dotnet/runtime#120996

Diffs

Found 85 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 46023740
Total bytes of diff: 46023606
Total bytes of delta: -134 (-0.00 % of base)
Total relative delta: Infinity
    diff is an improvement.
    relative diff is a regression.


Total byte diff includes 48 bytes from reconciling methods
	Base had    0 unique methods,        0 unique bytes
	Diff had    3 unique methods,       48 unique bytes

Top file regressions (bytes):
           4 : System.DirectoryServices.Protocols.dasm (0.00 % of base)

Top file improvements (bytes):
        -138 : System.Data.Common.dasm (-0.01 % of base)

2 total files with Code Size differences (1 improved, 1 regressed), 258 unchanged.

Top method regressions (bytes):
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_BaseDate():System.DateTime (FullOpts) (0 base, 1 diff methods)
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_MaxTimeSpan():System.TimeSpan (FullOpts) (0 base, 1 diff methods)
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_MinTimeSpan():System.TimeSpan (FullOpts) (0 base, 1 diff methods)
          13 (0.14 % of base) : System.Data.Common.dasm - System.Data.Common.SqlConvert:ChangeTypeForXML(System.Object,System.Type):System.Object (FullOpts)
          10 (9.62 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this (FullOpts)
          10 (3.33 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this (FullOpts)
          10 (7.81 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:ToString():System.String:this (FullOpts)
           8 (6.20 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this (FullOpts)
           7 (2.17 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
           4 (Infinity of base) : System.DirectoryServices.Protocols.dasm - System.DirectoryServices.Protocols.LdapConnection:get_AuthType():int:this (FullOpts)

Top method improvements (bytes):
        -231 (-45.65 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:.cctor() (FullOpts)
          -7 (-2.97 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString (FullOpts)
          -3 (-1.90 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
          -3 (-1.90 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)

Top method regressions (percentages):
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_BaseDate():System.DateTime (FullOpts) (0 base, 1 diff methods)
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_MaxTimeSpan():System.TimeSpan (FullOpts) (0 base, 1 diff methods)
          16 (Infinity of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_MinTimeSpan():System.TimeSpan (FullOpts) (0 base, 1 diff methods)
           4 (Infinity of base) : System.DirectoryServices.Protocols.dasm - System.DirectoryServices.Protocols.LdapConnection:get_AuthType():int:this (FullOpts)
          10 (9.62 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this (FullOpts)
          10 (7.81 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:ToString():System.String:this (FullOpts)
           8 (6.20 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this (FullOpts)
          10 (3.33 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this (FullOpts)
           7 (2.17 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
          13 (0.14 % of base) : System.Data.Common.dasm - System.Data.Common.SqlConvert:ChangeTypeForXML(System.Object,System.Type):System.Object (FullOpts)

Top method improvements (percentages):
        -231 (-45.65 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:.cctor() (FullOpts)
          -7 (-2.97 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString (FullOpts)
          -3 (-1.90 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
          -3 (-1.90 % of base) : System.Data.Common.dasm - System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)

14 total methods with Code Size differences (4 improved, 10 regressed), 282882 unchanged.

--------------------------------------------------------------------------------

Artifacts:

• build-clr-checked-main.zip (87 MB)
• build-artifacts-main.zip (678 MB)
• build-clr-checked-pr.zip (87 MB)
• build-artifacts-pr.zip (679 MB)
• jit-diffs-main.zip (154 MB)
• jit-diffs-pr.zip (154 MB)
• diff-frameworks.txt (5 KB)
• ShortDiffsRegressions.md (47 KB)
• LongDiffsRegressions.md (295 KB)
• ShortDiffsImprovements.md (52 KB)

[MihuBot]

Top method regressions

10 (9.62 % of base) - System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 8 single block inlinees; 2 inlinees without PGO data
+; 0 inlinees with PGO data; 12 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  5,  4   )   byref  ->  rsi         this single-def
+;  V00 this         [V00,T00] (  5,  4   )   byref  ->  rdi         this single-def
 ;* V01 loc0         [V01    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op <System.DateTime>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V03 tmp1         [V03    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlNullValueException>
-;* V04 tmp2         [V04    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V06 tmp4         [V06    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V07 tmp5         [V07,T01] (  2,  2   )    long  ->  rdi         "dup spill"
-;* V08 tmp6         [V08    ] (  0,  0   )    long  ->  zero-ref   
-;* V09 tmp7         [V09    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V10 tmp8         [V10    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V11 tmp9         [V11,T02] (  3,  1.50)    long  ->  rax         "Inline stloc first use temp"
-;* V12 tmp10        [V12    ] (  0,  0   )    long  ->  zero-ref    "field V01._dateData (fldOffset=0x0)" P-INDEP
-;* V13 tmp11        [V13    ] (  0,  0   )   ubyte  ->  zero-ref    "field V04.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V14 tmp12        [V14    ] (  0,  0   )     int  ->  zero-ref    "field V04.m_day (fldOffset=0x4)" P-INDEP
-;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "field V04.m_time (fldOffset=0x8)" P-INDEP
-;  V16 tmp14        [V16,T04] (  2,  1   )    long  ->  rax         "field V05._ticks (fldOffset=0x0)" P-INDEP
-;  V17 tmp15        [V17,T05] (  2,  1   )    long  ->  rax         "field V09._dateData (fldOffset=0x0)" P-INDEP
-;  V18 cse0         [V18,T03] (  3,  1.50)    long  ->  rax         "CSE #02: moderate"
+;* V04 tmp2         [V04    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V06 tmp4         [V06    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V10 tmp8         [V10    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V11 tmp9         [V11    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V12 tmp10        [V12    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V13 tmp11        [V13    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V14 tmp12        [V14,T02] (  2,  2   )    long  ->  rdi         "dup spill"
+;* V15 tmp13        [V15    ] (  0,  0   )    long  ->  zero-ref   
+;* V16 tmp14        [V16    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V17 tmp15        [V17    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V18 tmp16        [V18,T03] (  3,  1.50)    long  ->  rax         "Inline stloc first use temp"
+;* V19 tmp17        [V19    ] (  0,  0   )    long  ->  zero-ref    "field V01._dateData (fldOffset=0x0)" P-INDEP
+;* V20 tmp18        [V20    ] (  0,  0   )    long  ->  zero-ref    "field V04._dateData (fldOffset=0x0)" P-INDEP
+;  V21 tmp19        [V21,T05] (  2,  1   )   ubyte  ->  rcx         "field V05.m_fNotNull (fldOffset=0x0)" P-INDEP
+;  V22 tmp20        [V22,T06] (  2,  1   )     int  ->  rax         "field V05.m_day (fldOffset=0x4)" P-INDEP
+;  V23 tmp21        [V23,T07] (  2,  1   )     int  ->  rsi         "field V05.m_time (fldOffset=0x8)" P-INDEP
+;  V24 tmp22        [V24,T08] (  2,  1   )    long  ->  rax         "field V06._ticks (fldOffset=0x0)" P-INDEP
+;* V25 tmp23        [V25,T10] (  0,  0   )    long  ->  zero-ref    "field V07._dateData (fldOffset=0x0)" P-INDEP
+;* V26 tmp24        [V26    ] (  0,  0   )   byref  ->  zero-ref    "field V08._reference (fldOffset=0x0)" P-INDEP
+;* V27 tmp25        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
+;* V28 tmp26        [V28    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
+;  V32 tmp30        [V32,T09] (  2,  1   )    long  ->  rax         "field V16._dateData (fldOffset=0x0)" P-INDEP
+;  V33 cse0         [V33,T04] (  3,  1.50)    long  ->  rax         "CSE #02: moderate"
+;  V34 cse1         [V34,T01] (  3,  2.50)     int  ->  rcx         "CSE #01: aggressive"
 ;
 ; Lcl frame size = 0
 
 G_M31532_IG01:
        push     rbp
        mov      rbp, rsp
-       mov      rsi, rdi
-						;; size=7 bbWeight=1 PerfScore 1.50
+						;; size=4 bbWeight=1 PerfScore 1.25
 G_M31532_IG02:
-       cmp      byte  ptr [rsi], 0
+       movzx    rcx, byte  ptr [rdi]
+       test     ecx, ecx
        jne      SHORT G_M31532_IG05
-						;; size=5 bbWeight=1 PerfScore 4.00
+						;; size=7 bbWeight=1 PerfScore 3.25
 G_M31532_IG03:
        xor      eax, eax
 						;; size=2 bbWeight=0.50 PerfScore 0.12
 G_M31532_IG04:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M31532_IG05:
-       mov      rdi, qword ptr [rsi]
-       mov      esi, dword ptr [rsi+0x08]
+       mov      eax, dword ptr [rdi+0x04]
+       mov      esi, dword ptr [rdi+0x08]
+       mov      edi, eax
+       shl      rdi, 32
+       mov      eax, ecx
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rax, rdi
        mov      rdi, rax
        mov      rcx, 0xD1FFAB1E
        cmp      rdi, rcx
        ja       SHORT G_M31532_IG07
        mov      rdi, 0xD1FFAB1E
        and      rax, rdi
        mov      rdi, rax
        sar      rdi, 32
        xor      eax, edi
-						;; size=71 bbWeight=0.50 PerfScore 5.50
+						;; size=82 bbWeight=0.50 PerfScore 6.12
 G_M31532_IG06:
        pop      rbp
        ret      
 						;; size=2 bbWeight=0.50 PerfScore 0.75
 G_M31532_IG07:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 104, prolog size 4, PerfScore 12.62, instruction count 29, allocated bytes for code 104 (MethodHash=88a884d3) for method System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this (FullOpts)
+; Total bytes of code 114, prolog size 4, PerfScore 12.25, instruction count 33, allocated bytes for code 114 (MethodHash=88a884d3) for method System.Data.SqlTypes.SqlDateTime:GetHashCode():int:this (FullOpts)
 ; ============================================================

10 (3.33 % of base) - System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 12 single block inlinees; 2 inlinees without PGO data
+; 0 inlinees with PGO data; 16 single block inlinees; 3 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T01] (  5,  4   )   byref  ->  rsi         this single-def
+;  V00 this         [V00,T01] (  5,  4   )   byref  ->  rdi         this single-def
 ;  V01 arg1         [V01,T00] (  8,  5   )     ref  ->  rbx         class-hnd single-def <System.Xml.XmlWriter>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V03 tmp1         [V03    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.DateTime>
 ;* V04 tmp2         [V04    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlNullValueException>
-;* V05 tmp3         [V05    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V06 tmp4         [V06    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V07 tmp5         [V07    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V08 tmp6         [V08,T05] (  2,  2   )    long  ->  rdi         "dup spill"
-;* V09 tmp7         [V09    ] (  0,  0   )    long  ->  zero-ref   
-;* V10 tmp8         [V10    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V11 tmp9         [V11    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V12 tmp10        [V12    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.DateTime>
-;  V13 tmp11        [V13,T03] (  2,  2   )     ref  ->  rdx         class-hnd exact single-def "Inlining Arg" <System.Globalization.DateTimeFormatInfo>
-;* V14 tmp12        [V14    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
-;* V15 tmp13        [V15    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
-;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref    "field V03._dateData (fldOffset=0x0)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )   ubyte  ->  zero-ref    "field V05.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V05.m_day (fldOffset=0x4)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )     int  ->  zero-ref    "field V05.m_time (fldOffset=0x8)" P-INDEP
-;  V20 tmp18        [V20,T08] (  2,  1   )    long  ->  rax         "field V06._ticks (fldOffset=0x0)" P-INDEP
-;  V21 tmp19        [V21,T09] (  2,  1   )    long  ->  r15         "field V10._dateData (fldOffset=0x0)" P-INDEP
-;* V22 tmp20        [V22    ] (  0,  0   )    long  ->  zero-ref    "field V12._dateData (fldOffset=0x0)" P-INDEP
-;* V23 tmp21        [V23    ] (  0,  0   )    long  ->  zero-ref    "field V14._dateData (fldOffset=0x0)" P-INDEP
-;* V24 tmp22        [V24    ] (  0,  0   )    long  ->  zero-ref    "field V15._ticks (fldOffset=0x0)" P-INDEP
-;  V25 tmp23        [V25,T04] (  2,  2   )     ref  ->  rsi         single-def "argument with side effect"
-;  V26 cse0         [V26,T06] (  3,  1.50)    long  ->  r15         "CSE #04: moderate"
-;  V27 cse1         [V27,T07] (  3,  1.50)    long  ->  r14         "CSE #02: moderate"
-;  V28 cse2         [V28,T02] (  5,  2.50)    long  ->  r15         multi-def "CSE #01: aggressive"
+;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V06 tmp4         [V06    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V10 tmp8         [V10    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V11 tmp9         [V11    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V12 tmp10        [V12    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V13 tmp11        [V13    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V14 tmp12        [V14    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V15 tmp13        [V15,T06] (  2,  2   )    long  ->  rdi         "dup spill"
+;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref   
+;* V17 tmp15        [V17    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V18 tmp16        [V18    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;* V19 tmp17        [V19    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.DateTime>
+;  V20 tmp18        [V20,T04] (  2,  2   )     ref  ->  rdx         class-hnd exact single-def "Inlining Arg" <System.Globalization.DateTimeFormatInfo>
+;* V21 tmp19        [V21    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
+;* V22 tmp20        [V22    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
+;* V23 tmp21        [V23    ] (  0,  0   )    long  ->  zero-ref    "field V03._dateData (fldOffset=0x0)" P-INDEP
+;* V24 tmp22        [V24    ] (  0,  0   )    long  ->  zero-ref    "field V05._dateData (fldOffset=0x0)" P-INDEP
+;  V25 tmp23        [V25,T09] (  2,  1   )   ubyte  ->  rax         "field V06.m_fNotNull (fldOffset=0x0)" P-INDEP
+;  V26 tmp24        [V26,T10] (  2,  1   )     int  ->  rcx         "field V06.m_day (fldOffset=0x4)" P-INDEP
+;  V27 tmp25        [V27,T11] (  2,  1   )     int  ->  rsi         "field V06.m_time (fldOffset=0x8)" P-INDEP
+;  V28 tmp26        [V28,T12] (  2,  1   )    long  ->  rax         "field V07._ticks (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29,T14] (  0,  0   )    long  ->  zero-ref    "field V08._dateData (fldOffset=0x0)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V09._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp30        [V32    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
+;* V33 tmp31        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
+;* V34 tmp32        [V34    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V11._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp33        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
+;  V36 tmp34        [V36,T13] (  2,  1   )    long  ->  r15         "field V17._dateData (fldOffset=0x0)" P-INDEP
+;* V37 tmp35        [V37    ] (  0,  0   )    long  ->  zero-ref    "field V19._dateData (fldOffset=0x0)" P-INDEP
+;* V38 tmp36        [V38    ] (  0,  0   )    long  ->  zero-ref    "field V21._dateData (fldOffset=0x0)" P-INDEP
+;* V39 tmp37        [V39    ] (  0,  0   )    long  ->  zero-ref    "field V22._ticks (fldOffset=0x0)" P-INDEP
+;  V40 tmp38        [V40,T05] (  2,  2   )     ref  ->  rsi         single-def "argument with side effect"
+;  V41 cse0         [V41,T07] (  3,  1.50)    long  ->  r15         "CSE #04: moderate"
+;  V42 cse1         [V42,T08] (  3,  1.50)    long  ->  r14         "CSE #02: moderate"
+;  V43 cse2         [V43,T03] (  3,  2.50)     int  ->  rax         "CSE #03: aggressive"
+;  V44 cse3         [V44,T02] (  5,  2.50)    long  ->  r15         multi-def "CSE #01: aggressive"
 ;
 ; Lcl frame size = 8
 
 G_M42937_IG01:
        push     rbp
        push     r15
        push     r14
        push     rbx
        push     rax
        lea      rbp, [rsp+0x20]
        mov      rbx, rsi
-       mov      rsi, rdi
-						;; size=18 bbWeight=1 PerfScore 6.00
+						;; size=15 bbWeight=1 PerfScore 5.75
 G_M42937_IG02:
-       cmp      byte  ptr [rsi], 0
+       movzx    rax, byte  ptr [rdi]
+       test     eax, eax
        je       G_M42937_IG06
-						;; size=9 bbWeight=1 PerfScore 4.00
+						;; size=11 bbWeight=1 PerfScore 3.25
 G_M42937_IG03:
-       mov      rdi, qword ptr [rsi]
-       mov      esi, dword ptr [rsi+0x08]
+       mov      ecx, dword ptr [rdi+0x04]
+       mov      esi, dword ptr [rdi+0x08]
+       mov      edi, ecx
+       shl      rdi, 32
+       mov      eax, eax
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      r15, 0xD1FFAB1E
        add      r15, rax
        mov      rdi, r15
        mov      rax, 0xD1FFAB1E
        cmp      rdi, rax
        ja       G_M42937_IG08
        mov      rdi, 0xD1FFAB1E      ; global ptr
        test     byte  ptr [rdi], 1
        je       G_M42937_IG09
-						;; size=72 bbWeight=0.50 PerfScore 6.88
+						;; size=83 bbWeight=0.50 PerfScore 7.50
 G_M42937_IG04:
        mov      rdi, 0xD1FFAB1E      ; data for System.DateTimeFormat:InvariantFormatInfo
        mov      rdx, gword ptr [rdi]
        mov      rdi, r15
        mov      rsi, 0xD1FFAB1E      ; 'yyyy-MM-ddTHH:mm:ss.fff'
        mov      rcx, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
        call     [rax]System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
        mov      rsi, rax
        mov      rdi, rbx
        mov      r15, qword ptr [rbx]
        mov      rax, qword ptr [r15+0x50]
 						;; size=61 bbWeight=0.50 PerfScore 5.38
 G_M42937_IG05:
        add      rsp, 8
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax+0x20]System.Xml.XmlWriter:WriteString(System.String):this
 						;; size=14 bbWeight=0.50 PerfScore 3.12
 G_M42937_IG06:
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; 'xsi'
        mov      rdx, 0xD1FFAB1E      ; 'nil'
        mov      rcx, 0xD1FFAB1E      ; 'http://www.w3.org/2001/XMLSchema-instance'
        mov      r15, qword ptr [rbx]
        mov      r14, qword ptr [r15+0x48]
        call     [r14+0x20]System.Xml.XmlWriter:WriteStartAttribute(System.String,System.String,System.String):this
        mov      rdi, rbx
        mov      rsi, 0xD1FFAB1E      ; 'true'
        mov      rax, qword ptr [r15+0x50]
        call     [rax+0x20]System.Xml.XmlWriter:WriteString(System.String):this
        mov      rdi, rbx
        mov      rax, r14
 						;; size=70 bbWeight=0.50 PerfScore 7.00
 G_M42937_IG07:
        add      rsp, 8
        pop      rbx
        pop      r14
        pop      r15
        pop      rbp
        tail.jmp [rax+0x28]System.Xml.XmlWriter:WriteEndAttribute():this
 						;; size=14 bbWeight=0.50 PerfScore 3.12
 G_M42937_IG08:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 G_M42937_IG09:
        mov      rdi, 0xD1FFAB1E      ; System.DateTimeFormat
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_GET_GCSTATIC_BASE
        call     [rax]CORINFO_HELP_GET_GCSTATIC_BASE
        jmp      G_M42937_IG04
 						;; size=27 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 300, prolog size 12, PerfScore 35.50, instruction count 67, allocated bytes for code 300 (MethodHash=98515846) for method System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this (FullOpts)
+; Total bytes of code 310, prolog size 12, PerfScore 35.12, instruction count 71, allocated bytes for code 310 (MethodHash=98515846) for method System.Data.SqlTypes.SqlDateTime:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter):this (FullOpts)
 ; ============================================================

10 (7.81 % of base) - System.Data.SqlTypes.SqlDateTime:ToString():System.String:this

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:ToString():System.String:this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; fully interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 11 single block inlinees; 1 inlinees without PGO data
+; 0 inlinees with PGO data; 15 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  5,  4   )   byref  ->  rsi         this single-def
+;  V00 this         [V00,T00] (  5,  4   )   byref  ->  rdi         this single-def
 ;* V01 loc0         [V01    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op <System.DateTime>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V03 tmp1         [V03    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V04 tmp2         [V04    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V05 tmp3         [V05    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V06 tmp4         [V06,T01] (  2,  2   )    long  ->  rsi         "dup spill"
-;* V07 tmp5         [V07    ] (  0,  0   )    long  ->  zero-ref   
-;* V08 tmp6         [V08    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V09 tmp7         [V09    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V10 tmp8         [V10    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
-;* V11 tmp9         [V11    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
-;* V12 tmp10        [V12    ] (  0,  0   )    long  ->  zero-ref    "field V01._dateData (fldOffset=0x0)" P-INDEP
-;* V13 tmp11        [V13    ] (  0,  0   )   ubyte  ->  zero-ref    "field V03.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V14 tmp12        [V14    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_day (fldOffset=0x4)" P-INDEP
-;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_time (fldOffset=0x8)" P-INDEP
-;  V16 tmp14        [V16,T03] (  2,  1   )    long  ->  rax         "field V04._ticks (fldOffset=0x0)" P-INDEP
-;  V17 tmp15        [V17,T04] (  2,  1   )    long  ->  rdi         "field V08._dateData (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )    long  ->  zero-ref    "field V10._dateData (fldOffset=0x0)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )    long  ->  zero-ref    "field V11._ticks (fldOffset=0x0)" P-INDEP
-;  V20 cse0         [V20,T02] (  3,  1.50)    long  ->  rdi         "CSE #02: moderate"
+;* V03 tmp1         [V03    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V04 tmp2         [V04    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V06 tmp4         [V06    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V07 tmp5         [V07    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V10 tmp8         [V10    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V11 tmp9         [V11    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V12 tmp10        [V12    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V13 tmp11        [V13,T02] (  2,  2   )    long  ->  rsi         "dup spill"
+;* V14 tmp12        [V14    ] (  0,  0   )    long  ->  zero-ref   
+;* V15 tmp13        [V15    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;* V17 tmp15        [V17    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
+;* V18 tmp16        [V18    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
+;* V19 tmp17        [V19    ] (  0,  0   )    long  ->  zero-ref    "field V01._dateData (fldOffset=0x0)" P-INDEP
+;* V20 tmp18        [V20    ] (  0,  0   )    long  ->  zero-ref    "field V03._dateData (fldOffset=0x0)" P-INDEP
+;  V21 tmp19        [V21,T04] (  2,  1   )   ubyte  ->  rax         "field V04.m_fNotNull (fldOffset=0x0)" P-INDEP
+;  V22 tmp20        [V22,T05] (  2,  1   )     int  ->  rcx         "field V04.m_day (fldOffset=0x4)" P-INDEP
+;  V23 tmp21        [V23,T06] (  2,  1   )     int  ->  rsi         "field V04.m_time (fldOffset=0x8)" P-INDEP
+;  V24 tmp22        [V24,T07] (  2,  1   )    long  ->  rax         "field V05._ticks (fldOffset=0x0)" P-INDEP
+;* V25 tmp23        [V25,T09] (  0,  0   )    long  ->  zero-ref    "field V06._dateData (fldOffset=0x0)" P-INDEP
+;* V26 tmp24        [V26    ] (  0,  0   )   byref  ->  zero-ref    "field V07._reference (fldOffset=0x0)" P-INDEP
+;* V27 tmp25        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V07._length (fldOffset=0x8)" P-INDEP
+;* V28 tmp26        [V28    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V08._reference (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;  V32 tmp30        [V32,T08] (  2,  1   )    long  ->  rdi         "field V15._dateData (fldOffset=0x0)" P-INDEP
+;* V33 tmp31        [V33    ] (  0,  0   )    long  ->  zero-ref    "field V17._dateData (fldOffset=0x0)" P-INDEP
+;* V34 tmp32        [V34    ] (  0,  0   )    long  ->  zero-ref    "field V18._ticks (fldOffset=0x0)" P-INDEP
+;  V35 cse0         [V35,T03] (  3,  1.50)    long  ->  rdi         "CSE #02: moderate"
+;  V36 cse1         [V36,T01] (  3,  2.50)     int  ->  rax         "CSE #01: aggressive"
 ;
 ; Lcl frame size = 0
 
 G_M63686_IG01:
        push     rbp
        mov      rbp, rsp
-       mov      rsi, rdi
-						;; size=7 bbWeight=1 PerfScore 1.50
+						;; size=4 bbWeight=1 PerfScore 1.25
 G_M63686_IG02:
-       cmp      byte  ptr [rsi], 0
+       movzx    rax, byte  ptr [rdi]
+       test     eax, eax
        je       SHORT G_M63686_IG05
-						;; size=5 bbWeight=1 PerfScore 4.00
+						;; size=7 bbWeight=1 PerfScore 3.25
 G_M63686_IG03:
-       mov      rdi, qword ptr [rsi]
-       mov      esi, dword ptr [rsi+0x08]
+       mov      ecx, dword ptr [rdi+0x04]
+       mov      esi, dword ptr [rdi+0x08]
+       mov      edi, ecx
+       shl      rdi, 32
+       mov      eax, eax
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rdi, rax
        mov      rsi, rdi
        mov      rdx, 0xD1FFAB1E
        cmp      rsi, rdx
        ja       SHORT G_M63686_IG07
        xor      rsi, rsi
        xor      rdx, rdx
        mov      rcx, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
-						;; size=73 bbWeight=0.50 PerfScore 5.25
+						;; size=84 bbWeight=0.50 PerfScore 5.88
 G_M63686_IG04:
        pop      rbp
        tail.jmp [rax]System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
 						;; size=4 bbWeight=0.50 PerfScore 2.25
 G_M63686_IG05:
        mov      rdi, 0xD1FFAB1E      ; 'SqlMisc_NullString'
        mov      rax, 0xD1FFAB1E      ; code for System.SR:GetResourceString(System.String):System.String
 						;; size=20 bbWeight=0.50 PerfScore 0.25
 G_M63686_IG06:
        pop      rbp
        tail.jmp [rax]System.SR:GetResourceString(System.String):System.String
 						;; size=4 bbWeight=0.50 PerfScore 2.25
 G_M63686_IG07:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 128, prolog size 7, PerfScore 15.50, instruction count 29, allocated bytes for code 128 (MethodHash=5dcb0739) for method System.Data.SqlTypes.SqlDateTime:ToString():System.String:this (FullOpts)
+; Total bytes of code 138, prolog size 4, PerfScore 15.12, instruction count 33, allocated bytes for code 138 (MethodHash=5dcb0739) for method System.Data.SqlTypes.SqlDateTime:ToString():System.String:this (FullOpts)
 ; ============================================================

8 (6.20 % of base) - System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 5 single block inlinees; 1 inlinees without PGO data
+; 0 inlinees with PGO data; 9 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 this         [V00,T00] (  5,  5   )   byref  ->  rsi         this single-def
+;  V00 this         [V00,T00] (  5,  5   )   byref  ->  rdi         this single-def
 ;# V01 OutArgs      [V01    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V02 tmp1         [V02,T05] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlNullValueException>
-;* V03 tmp2         [V03    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V04 tmp3         [V04    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V05 tmp4         [V05    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V06 tmp5         [V06,T01] (  2,  4   )    long  ->  rdi         "dup spill"
-;* V07 tmp6         [V07    ] (  0,  0   )    long  ->  zero-ref   
-;* V08 tmp7         [V08    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V09 tmp8         [V09    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V10 tmp9         [V10    ] (  0,  0   )   ubyte  ->  zero-ref    "field V03.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V11 tmp10        [V11    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_day (fldOffset=0x4)" P-INDEP
-;* V12 tmp11        [V12    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_time (fldOffset=0x8)" P-INDEP
-;  V13 tmp12        [V13,T03] (  2,  2   )    long  ->  rax         "field V04._ticks (fldOffset=0x0)" P-INDEP
-;  V14 tmp13        [V14,T04] (  2,  2   )    long  ->  rax         "field V08._dateData (fldOffset=0x0)" P-INDEP
-;  V15 cse0         [V15,T02] (  3,  3   )    long  ->  rax         "CSE #02: aggressive"
+;  V02 tmp1         [V02,T10] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlNullValueException>
+;* V03 tmp2         [V03    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V04 tmp3         [V04    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V05 tmp4         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V06 tmp5         [V06    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V07 tmp6         [V07    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V08 tmp7         [V08    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V09 tmp8         [V09    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V10 tmp9         [V10    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V11 tmp10        [V11    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V12 tmp11        [V12    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V13 tmp12        [V13,T01] (  2,  4   )    long  ->  rdi         "dup spill"
+;* V14 tmp13        [V14    ] (  0,  0   )    long  ->  zero-ref   
+;* V15 tmp14        [V15    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V16 tmp15        [V16    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;* V17 tmp16        [V17    ] (  0,  0   )    long  ->  zero-ref    "field V03._dateData (fldOffset=0x0)" P-INDEP
+;  V18 tmp17        [V18,T04] (  2,  2   )   ubyte  ->  rax         "field V04.m_fNotNull (fldOffset=0x0)" P-INDEP
+;  V19 tmp18        [V19,T05] (  2,  2   )     int  ->  rcx         "field V04.m_day (fldOffset=0x4)" P-INDEP
+;  V20 tmp19        [V20,T06] (  2,  2   )     int  ->  rsi         "field V04.m_time (fldOffset=0x8)" P-INDEP
+;  V21 tmp20        [V21,T07] (  2,  2   )    long  ->  rax         "field V05._ticks (fldOffset=0x0)" P-INDEP
+;* V22 tmp21        [V22,T09] (  0,  0   )    long  ->  zero-ref    "field V06._dateData (fldOffset=0x0)" P-INDEP
+;* V23 tmp22        [V23    ] (  0,  0   )   byref  ->  zero-ref    "field V07._reference (fldOffset=0x0)" P-INDEP
+;* V24 tmp23        [V24    ] (  0,  0   )     int  ->  zero-ref    "field V07._length (fldOffset=0x8)" P-INDEP
+;* V25 tmp24        [V25    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V08._reference (fldOffset=0x0)" P-INDEP
+;* V26 tmp25        [V26    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
+;* V27 tmp26        [V27    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
+;* V28 tmp27        [V28    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
+;  V29 tmp28        [V29,T08] (  2,  2   )    long  ->  rax         "field V15._dateData (fldOffset=0x0)" P-INDEP
+;  V30 cse0         [V30,T02] (  3,  3   )    long  ->  rax         "CSE #02: aggressive"
+;  V31 cse1         [V31,T03] (  3,  3   )     int  ->  rax         "CSE #01: aggressive"
 ;
 ; Lcl frame size = 8
 
 G_M54462_IG01:
        push     rbp
        push     rbx
        push     rax
        lea      rbp, [rsp+0x10]
-       mov      rsi, rdi
-						;; size=11 bbWeight=1 PerfScore 3.75
+						;; size=8 bbWeight=1 PerfScore 3.50
 G_M54462_IG02:
-       cmp      byte  ptr [rsi], 0
+       movzx    rax, byte  ptr [rdi]
+       test     eax, eax
        je       SHORT G_M54462_IG05
-       mov      rdi, qword ptr [rsi]
-       mov      esi, dword ptr [rsi+0x08]
+       mov      ecx, dword ptr [rdi+0x04]
+       mov      esi, dword ptr [rdi+0x08]
+       mov      edi, ecx
+       shl      rdi, 32
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rax, rdi
        mov      rdi, rax
        mov      rcx, 0xD1FFAB1E
        cmp      rdi, rcx
        ja       SHORT G_M54462_IG04
-						;; size=54 bbWeight=1 PerfScore 13.50
+						;; size=65 bbWeight=1 PerfScore 13.75
 G_M54462_IG03:
        add      rsp, 8
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=1 PerfScore 2.25
 G_M54462_IG04:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 G_M54462_IG05:
        mov      rdi, 0xD1FFAB1E      ; System.Data.SqlTypes.SqlNullValueException
        call     CORINFO_HELP_NEWSFAST
        mov      rbx, rax
        mov      rdi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlNullValueException:.ctor():this
        call     [rax]System.Data.SqlTypes.SqlNullValueException:.ctor():this
        mov      rdi, rbx
        call     CORINFO_HELP_THROW
        int3     
 						;; size=42 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 129, prolog size 8, PerfScore 19.50, instruction count 34, allocated bytes for code 129 (MethodHash=75562b41) for method System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this (FullOpts)
+; Total bytes of code 137, prolog size 8, PerfScore 19.50, instruction count 37, allocated bytes for code 137 (MethodHash=75562b41) for method System.Data.SqlTypes.SqlDateTime:get_Value():System.DateTime:this (FullOpts)
 ; ============================================================

7 (2.17 % of base) - System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
 ; 0 inlinees with PGO data; 7 single block inlinees; 0 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;* V00 arg0         [V00    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op single-def <System.TimeSpan>
 ;  V01 loc0         [V01,T02] (  7,  5   )     int  ->  rsi        
-;  V02 loc1         [V02,T03] (  5,  4   )    long  ->  rdi        
+;  V02 loc1         [V02,T03] (  5,  4   )    long  ->  rbx        
 ;  V03 loc2         [V03,T04] (  4,  3.50)     int  ->  rdx        
 ;# V04 OutArgs      [V04    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V05 tmp1         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "folding static readonly field struct" <System.TimeSpan>
-;  V06 tmp2         [V06,T06] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlTypeException>
-;* V07 tmp3         [V07    ] (  0,  0   )  struct ( 8) zero-ref    "folding static readonly field struct" <System.TimeSpan>
-;  V08 tmp4         [V08    ] (  3,  6   )  struct (16) [rbp-0x18]  do-not-enreg[XSR] multireg-ret addr-exposed ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
-;* V09 tmp5         [V09    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.TimeSpan>
-;* V10 tmp6         [V10    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.TimeSpan>
+;* V05 tmp1         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "impAppendStmt" <System.TimeSpan>
+;* V06 tmp2         [V06    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;  V07 tmp3         [V07,T08] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.Data.SqlTypes.SqlTypeException>
+;* V08 tmp4         [V08    ] (  0,  0   )  struct ( 8) zero-ref    "impAppendStmt" <System.TimeSpan>
+;* V09 tmp5         [V09    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;  V10 tmp6         [V10    ] (  3,  6   )  struct (16) [rbp-0x18]  do-not-enreg[XSR] multireg-ret addr-exposed ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
 ;* V11 tmp7         [V11    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact "Inlining Arg" <System.String>
-;  V12 tmp8         [V12,T00] (  6,  6   )    long  ->  rdi         single-def "field V00._ticks (fldOffset=0x0)" P-INDEP
+;  V12 tmp8         [V12,T00] (  6,  6   )    long  ->  rbx         single-def "field V00._ticks (fldOffset=0x0)" P-INDEP
 ;* V13 tmp9         [V13    ] (  0,  0   )    long  ->  zero-ref    "field V05._ticks (fldOffset=0x0)" P-INDEP
-;* V14 tmp10        [V14    ] (  0,  0   )    long  ->  zero-ref    "field V07._ticks (fldOffset=0x0)" P-INDEP
-;* V15 tmp11        [V15    ] (  0,  0   )    long  ->  zero-ref    "field V09._ticks (fldOffset=0x0)" P-INDEP
-;* V16 tmp12        [V16    ] (  0,  0   )    long  ->  zero-ref    "field V10._ticks (fldOffset=0x0)" P-INDEP
-;  V17 tmp13        [V17,T07] (  2,  0   )     ref  ->  rsi         single-def "argument with side effect"
+;  V14 tmp10        [V14,T05] (  2,  2   )    long  ->  rax         "field V06._ticks (fldOffset=0x0)" P-INDEP
+;* V15 tmp11        [V15    ] (  0,  0   )    long  ->  zero-ref    "field V08._ticks (fldOffset=0x0)" P-INDEP
+;  V16 tmp12        [V16,T06] (  2,  2   )    long  ->  rax         "field V09._ticks (fldOffset=0x0)" P-INDEP
+;  V17 tmp13        [V17,T09] (  2,  0   )     ref  ->  rsi         single-def "argument with side effect"
 ;  V18 rat0         [V18,T01] (  3,  6   )    long  ->  rdx         "ReplaceWithLclVar is creating a new local variable"
-;  V19 rat1         [V19,T05] (  5, 10   )  simd16  ->  mm0         "ReplaceWithLclVar is creating a new local variable"
+;  V19 rat1         [V19,T07] (  5, 10   )  simd16  ->  mm0         "ReplaceWithLclVar is creating a new local variable"
 ;
 ; Lcl frame size = 24
 
 G_M52230_IG01:
        push     rbp
        push     rbx
        sub      rsp, 24
        lea      rbp, [rsp+0x20]
-						;; size=11 bbWeight=1 PerfScore 2.75
+       mov      rbx, rdi
+						;; size=14 bbWeight=1 PerfScore 3.00
 G_M52230_IG02:
-       mov      rax, 0xD1FFAB1E
-       cmp      rdi, rax
+       mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:get_MinTimeSpan():System.TimeSpan
+       call     [rax]System.Data.SqlTypes.SqlDateTime:get_MinTimeSpan():System.TimeSpan
+       cmp      rbx, rax
        jl       G_M52230_IG08
-       mov      rax, 0xD1FFAB1E
-       cmp      rdi, rax
+       mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:get_MaxTimeSpan():System.TimeSpan
+       call     [rax]System.Data.SqlTypes.SqlDateTime:get_MaxTimeSpan():System.TimeSpan
+       cmp      rbx, rax
        jg       G_M52230_IG08
        mov      rdx, 0xD1FFAB1E
        mov      rax, rdx
-       imul     rdx:rax, rdi
-       add      rdx, rdi
+       imul     rdx:rax, rbx
+       add      rdx, rbx
        mov      rsi, rdx
        shr      rsi, 63
        sar      rdx, 39
        add      rsi, rdx
-       movsxd   rdx, esi
-       mov      rax, 0xD1FFAB1E
-       imul     rdx, rax
-       sub      rdi, rdx
+       movsxd   rdi, esi
+       mov      rdx, 0xD1FFAB1E
+       imul     rdi, rdx
+       sub      rbx, rdi
        jns      SHORT G_M52230_IG04
-						;; size=93 bbWeight=1 PerfScore 12.00
+						;; size=97 bbWeight=1 PerfScore 18.00
 G_M52230_IG03:
        dec      esi
-       mov      rdx, 0xD1FFAB1E
-       add      rdi, rdx
+       mov      rdi, 0xD1FFAB1E
+       add      rbx, rdi
 						;; size=15 bbWeight=0.50 PerfScore 0.38
 G_M52230_IG04:
        vxorps   xmm0, xmm0, xmm0
-       vcvtsi2sd xmm0, xmm0, rdi
+       vcvtsi2sd xmm0, xmm0, rbx
        vdivsd   xmm0, xmm0, qword ptr [reloc @RWD00]
        vmulsd   xmm0, xmm0, qword ptr [reloc @RWD08]
        vaddsd   xmm0, xmm0, qword ptr [reloc @RWD16]
        vcmpordsd xmm1, xmm0, xmm0
        vandpd   xmm1, xmm1, xmm0
        mov      edi, 0xD1FFAB1E
        vcvttsd2si edx, xmm1
        vucomisd xmm0, qword ptr [reloc @RWD24]
        cmovb    edi, edx
        mov      edx, edi
        cmp      edx, 0xD1FFAB1E
        jle      SHORT G_M52230_IG06
 						;; size=72 bbWeight=1 PerfScore 45.67
 G_M52230_IG05:
        xor      edx, edx
        inc      esi
 						;; size=4 bbWeight=0.50 PerfScore 0.25
 G_M52230_IG06:
        xor      edi, edi
        mov      qword ptr [rbp-0x18], rdi
        mov      dword ptr [rbp-0x10], edi
        lea      rdi, [rbp-0x18]
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:.ctor(int,int):this
        call     [rax]System.Data.SqlTypes.SqlDateTime:.ctor(int,int):this
        mov      rax, qword ptr [rbp-0x18]
        mov      edx, dword ptr [rbp-0x10]
 						;; size=32 bbWeight=1 PerfScore 8.00
 G_M52230_IG07:
        add      rsp, 24
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=1 PerfScore 2.25
 G_M52230_IG08:
        mov      rdi, 0xD1FFAB1E      ; System.Data.SqlTypes.SqlTypeException
        call     CORINFO_HELP_NEWSFAST
        mov      rbx, rax
        mov      edi, 0x5EFE
        mov      rsi, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_STRCNS
        call     [rax]CORINFO_HELP_STRCNS
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.SR:GetResourceString(System.String):System.String
        call     [rax]System.SR:GetResourceString(System.String):System.String
        mov      rsi, rax
        mov      rdi, rbx
        xor      rdx, rdx
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlTypeException:.ctor(System.String,System.Exception):this
        call     [rax]System.Data.SqlTypes.SqlTypeException:.ctor(System.String,System.Exception):this
        mov      rdi, rbx
        call     CORINFO_HELP_THROW
        int3     
 						;; size=89 bbWeight=0 PerfScore 0.00
 RWD00  	dq	40C3880000000000h	;        10000
 RWD08  	dq	3FD3333333333333h	;          0.3
 RWD16  	dq	3FE0000000000000h	;          0.5
 RWD24  	dq	41E0000000000000h
 
 
-; Total bytes of code 323, prolog size 11, PerfScore 71.29, instruction count 72, allocated bytes for code 323 (MethodHash=89be33f9) for method System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
+; Total bytes of code 330, prolog size 11, PerfScore 77.54, instruction count 75, allocated bytes for code 330 (MethodHash=89be33f9) for method System.Data.SqlTypes.SqlDateTime:FromTimeSpan(System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; ============================================================

Note: some changes were skipped as they were too large to fit into a comment.

Larger list of diffs: https://gist.github.com/MihuBot/1ada3863ea83b305d412cd03c0a7972a

[MihuBot]

Top method improvements

-231 (-45.65 % of base) - System.Data.SqlTypes.SqlDateTime:.cctor()

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:.cctor() (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 20 single block inlinees; 4 inlinees without PGO data
+; 0 inlinees with PGO data; 1 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;* V00 loc0         [V00    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op <System.DateTime>
-;# V01 OutArgs      [V01    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;* V02 tmp1         [V02    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V03 tmp2         [V03    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;  V04 tmp3         [V04,T00] ( 10, 20   )     ref  ->  rax         class-hnd exact single-def "NewArr temp" <System.String[]>
-;* V05 tmp4         [V05    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
-;* V06 tmp5         [V06    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
-;* V07 tmp6         [V07    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
-;* V08 tmp7         [V08    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
-;* V09 tmp8         [V09    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
-;* V10 tmp9         [V10    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
-;* V11 tmp10        [V11    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
-;* V12 tmp11        [V12    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
-;* V13 tmp12        [V13    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
-;* V14 tmp13        [V14    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
-;* V15 tmp14        [V15    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
-;* V16 tmp15        [V16    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
-;* V17 tmp16        [V17    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
-;* V18 tmp17        [V18    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.DateTime>
-;* V19 tmp18        [V19    ] (  0,  0   )    long  ->  zero-ref    "impAppendStmt"
-;* V20 tmp19        [V20    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
-;* V21 tmp20        [V21    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V22 tmp21        [V22    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inlining Arg" <System.DateTime>
-;* V23 tmp22        [V23    ] (  0,  0   )    long  ->  zero-ref    "impAppendStmt"
-;* V24 tmp23        [V24    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
-;* V25 tmp24        [V25    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V26 tmp25        [V26    ] (  0,  0   )     ref  ->  zero-ref    class-hnd exact single-def "NewObj constructor temp" <System.OverflowException>
-;  V27 tmp26        [V27,T02] (  3,  6   )     int  ->  rdi         "Inlining Arg"
-;  V28 tmp27        [V28,T18] (  3,  0   )     ref  ->  rbx         class-hnd exact single-def "NewObj constructor temp" <System.OverflowException>
-;* V29 tmp28        [V29    ] (  0,  0   )    long  ->  zero-ref    "field V00._dateData (fldOffset=0x0)" P-INDEP
-;* V30 tmp29        [V30,T14] (  0,  0   )    long  ->  zero-ref    "field V02._dateData (fldOffset=0x0)" P-INDEP
-;* V31 tmp30        [V31,T15] (  0,  0   )    long  ->  zero-ref    "field V03._dateData (fldOffset=0x0)" P-INDEP
-;* V32 tmp31        [V32    ] (  0,  0   )   ubyte  ->  zero-ref    "field V05.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V33 tmp32        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V05.m_day (fldOffset=0x4)" P-INDEP
-;* V34 tmp33        [V34    ] (  0,  0   )     int  ->  zero-ref    "field V05.m_time (fldOffset=0x8)" P-INDEP
-;* V35 tmp34        [V35    ] (  0,  0   )   ubyte  ->  zero-ref    "field V06.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V36 tmp35        [V36    ] (  0,  0   )     int  ->  zero-ref    "field V06.m_day (fldOffset=0x4)" P-INDEP
-;* V37 tmp36        [V37    ] (  0,  0   )     int  ->  zero-ref    "field V06.m_time (fldOffset=0x8)" P-INDEP
-;* V38 tmp37        [V38    ] (  0,  0   )   ubyte  ->  zero-ref    "field V07.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V39 tmp38        [V39    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_day (fldOffset=0x4)" P-INDEP
-;* V40 tmp39        [V40    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_time (fldOffset=0x8)" P-INDEP
-;* V41 tmp40        [V41    ] (  0,  0   )   byref  ->  zero-ref    "field V08._reference (fldOffset=0x0)" P-INDEP
-;* V42 tmp41        [V42    ] (  0,  0   )     int  ->  zero-ref    "field V08._length (fldOffset=0x8)" P-INDEP
-;* V43 tmp42        [V43    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V09._reference (fldOffset=0x0)" P-INDEP
-;* V44 tmp43        [V44    ] (  0,  0   )     int  ->  zero-ref    "field V09._length (fldOffset=0x8)" P-INDEP
-;* V45 tmp44        [V45    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V10._reference (fldOffset=0x0)" P-INDEP
-;* V46 tmp45        [V46    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
-;* V47 tmp46        [V47    ] (  0,  0   )   byref  ->  zero-ref    "field V13._reference (fldOffset=0x0)" P-INDEP
-;* V48 tmp47        [V48    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
-;* V49 tmp48        [V49    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V14._reference (fldOffset=0x0)" P-INDEP
-;* V50 tmp49        [V50    ] (  0,  0   )     int  ->  zero-ref    "field V14._length (fldOffset=0x8)" P-INDEP
-;* V51 tmp50        [V51    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V15._reference (fldOffset=0x0)" P-INDEP
-;* V52 tmp51        [V52    ] (  0,  0   )     int  ->  zero-ref    "field V15._length (fldOffset=0x8)" P-INDEP
-;* V53 tmp52        [V53,T16] (  0,  0   )    long  ->  zero-ref    "field V18._dateData (fldOffset=0x0)" P-INDEP
-;  V54 tmp53        [V54,T11] (  2,  2   )    long  ->  rdi         "field V20._ticks (fldOffset=0x0)" P-INDEP
-;* V55 tmp54        [V55,T17] (  0,  0   )    long  ->  zero-ref    "field V22._dateData (fldOffset=0x0)" P-INDEP
-;  V56 tmp55        [V56,T12] (  2,  2   )    long  ->  rdi         "field V24._ticks (fldOffset=0x0)" P-INDEP
-;  V57 tmp56        [V57,T19] (  2,  0   )     ref  ->  rsi         single-def "argument with side effect"
-;* V58 tmp57        [V58    ] (  0,  0   )     ref  ->  zero-ref    single-def "argument with side effect"
-;  V59 cse0         [V59,T06] (  3,  3   )     int  ->  rdi         "CSE #08: aggressive"
-;  V60 cse1         [V60,T07] (  3,  3   )     int  ->  rdi         "CSE #03: aggressive"
-;  V61 cse2         [V61,T08] (  3,  3   )     int  ->  rdi         "CSE #05: aggressive"
-;  V62 cse3         [V62,T01] (  4,  4   )    long  ->  rsi         "CSE #06: aggressive"
-;  V63 cse4         [V63,T03] (  4,  4   )    long  ->  rdi         "CSE #11: aggressive"
-;  V64 cse5         [V64,T04] (  4,  4   )    long  ->  rax         "CSE #14: aggressive"
-;  V65 cse6         [V65,T05] (  4,  4   )    long  ->  rdi         "CSE #15: aggressive"
-;  V66 cse7         [V66,T09] (  3,  3   )    long  ->  rdi         "CSE #01: aggressive"
-;* V67 cse8         [V67,T13] (  0,  0   )   byref  ->  zero-ref    "CSE #09: aggressive"
-;  V68 cse9         [V68,T10] (  3,  3   )    long  ->  rbx         "CSE #12: aggressive"
+;# V00 OutArgs      [V00    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
+;  V01 tmp1         [V01,T00] ( 10, 20   )     ref  ->  rax         class-hnd exact single-def "NewArr temp" <System.String[]>
+;* V02 tmp2         [V02    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
+;* V03 tmp3         [V03    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
+;* V04 tmp4         [V04    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlDateTime>
+;* V05 tmp5         [V05    ] (  0,  0   )   ubyte  ->  zero-ref    "field V02.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V06 tmp6         [V06    ] (  0,  0   )     int  ->  zero-ref    "field V02.m_day (fldOffset=0x4)" P-INDEP
+;* V07 tmp7         [V07    ] (  0,  0   )     int  ->  zero-ref    "field V02.m_time (fldOffset=0x8)" P-INDEP
+;* V08 tmp8         [V08    ] (  0,  0   )   ubyte  ->  zero-ref    "field V03.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V09 tmp9         [V09    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_day (fldOffset=0x4)" P-INDEP
+;* V10 tmp10        [V10    ] (  0,  0   )     int  ->  zero-ref    "field V03.m_time (fldOffset=0x8)" P-INDEP
+;* V11 tmp11        [V11    ] (  0,  0   )   ubyte  ->  zero-ref    "field V04.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V12 tmp12        [V12    ] (  0,  0   )     int  ->  zero-ref    "field V04.m_day (fldOffset=0x4)" P-INDEP
+;* V13 tmp13        [V13    ] (  0,  0   )     int  ->  zero-ref    "field V04.m_time (fldOffset=0x8)" P-INDEP
+;  V14 cse0         [V14,T01] (  4,  4   )    long  ->  rax         "CSE #01: aggressive"
+;  V15 cse1         [V15,T02] (  4,  4   )    long  ->  rax         "CSE #02: aggressive"
+;  V16 cse2         [V16,T03] (  4,  4   )    long  ->  rax         "CSE #03: aggressive"
 ;
-; Lcl frame size = 8
+; Lcl frame size = 0
 
 G_M31479_IG01:
        push     rbp
-       push     rbx
-       push     rax
-       lea      rbp, [rsp+0x10]
-						;; size=8 bbWeight=1 PerfScore 3.50
+       mov      rbp, rsp
+						;; size=4 bbWeight=1 PerfScore 1.25
 G_M31479_IG02:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerSecond
-       mov      dword ptr [rdi], 300
-       imul     edi, dword ptr [rdi], 60
-       mov      rsi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerMinute
-       mov      dword ptr [rsi], edi
-       imul     edi, edi, 60
-       mov      rsi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerHour
-       mov      dword ptr [rsi], edi
-       lea      edi, [rdi+2*rdi]
-       shl      edi, 3
-       mov      rsi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_SQLTicksPerDay
-       mov      dword ptr [rsi], edi
-       mov      rsi, 0xD1FFAB1E
-       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_SQLBaseDate
-       mov      qword ptr [rax], rsi
-       mov      rsi, 0xD1FFAB1E      ; static handle
-       mov      rsi, qword ptr [rsi]
-       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_SQLBaseDateTicks
-       mov      qword ptr [rax], rsi
-       dec      edi
-       mov      rbx, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_maxTime
-       mov      dword ptr [rbx], edi
-       mov      rdi, 0xD1FFAB1E
-       sub      rdi, rsi
-       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_minTimeSpan
-       mov      qword ptr [rax], rdi
-       mov      rdi, 0xD1FFAB1E
-       sub      rdi, rsi
-       mov      rsi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_maxTimeSpan
-       mov      qword ptr [rsi], rdi
        mov      rdi, 0xD1FFAB1E      ; System.String[]
        mov      esi, 8
        call     CORINFO_HELP_NEWARR_1_PTR
        mov      rdi, 0xD1FFAB1E      ; 'MMM d yyyy hh:mm:ss:ffftt'
        mov      gword ptr [rax+0x10], rdi
        mov      rdi, 0xD1FFAB1E      ; 'MMM d yyyy hh:mm:ss:fff'
        mov      gword ptr [rax+0x18], rdi
        mov      rdi, 0xD1FFAB1E      ; 'd MMM yyyy hh:mm:ss:ffftt'
        mov      gword ptr [rax+0x20], rdi
        mov      rdi, 0xD1FFAB1E      ; 'd MMM yyyy hh:mm:ss:fff'
        mov      gword ptr [rax+0x28], rdi
        mov      rdi, 0xD1FFAB1E      ; 'hh:mm:ss:ffftt'
        mov      gword ptr [rax+0x30], rdi
        mov      rdi, 0xD1FFAB1E      ; 'hh:mm:ss:fff'
        mov      gword ptr [rax+0x38], rdi
        mov      rdi, 0xD1FFAB1E      ; 'yyMMdd'
        mov      gword ptr [rax+0x40], rdi
        mov      rdi, 0xD1FFAB1E      ; 'yyyyMMdd'
        mov      gword ptr [rax+0x48], rdi
        mov      rdi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:s_dateTimeFormats
        mov      rsi, rax
        call     CORINFO_HELP_ASSIGN_REF
-						;; size=329 bbWeight=1 PerfScore 36.00
-G_M31479_IG03:
-       mov      rdi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:MinValue
-       mov      byte  ptr [rdi], 1
-       mov      dword ptr [rdi+0x04], -0xD1BA
-       xor      eax, eax
-       mov      dword ptr [rdi+0x08], eax
-       mov      edi, dword ptr [rbx]
-       test     edi, edi
-       jl       SHORT G_M31479_IG06
+       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerSecond
+       mov      dword ptr [rax], 300
+       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerMinute
+       mov      dword ptr [rax], 0x4650
+       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:SQLTicksPerHour
+       mov      dword ptr [rax], 0xD1FFAB1E
+       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:MinValue
+       mov      byte  ptr [rax], 1
+       mov      dword ptr [rax+0x04], -0xD1BA
+       xor      ecx, ecx
+       mov      dword ptr [rax+0x08], ecx
        mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:MaxValue
        mov      byte  ptr [rax], 1
        mov      dword ptr [rax+0x04], 0xD1FFAB1E
-       mov      dword ptr [rax+0x08], edi
-       mov      rdi, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:Null
-       mov      byte  ptr [rdi], 0
-       xor      eax, eax
-       mov      dword ptr [rdi+0x04], eax
-						;; size=72 bbWeight=1 PerfScore 12.50
+       mov      dword ptr [rax+0x08], 0xD1FFAB1E
+       mov      rax, 0xD1FFAB1E      ; data for System.Data.SqlTypes.SqlDateTime:Null
+       mov      byte  ptr [rax], 0
+						;; size=263 bbWeight=1 PerfScore 24.75
+G_M31479_IG03:
+       mov      dword ptr [rax+0x04], ecx
+						;; size=3 bbWeight=1 PerfScore 1.00
 G_M31479_IG04:
-       mov      dword ptr [rdi+0x08], eax
+       mov      dword ptr [rax+0x08], ecx
 						;; size=3 bbWeight=1 PerfScore 1.00
 G_M31479_IG05:
-       add      rsp, 8
-       pop      rbx
        pop      rbp
        ret      
-						;; size=7 bbWeight=1 PerfScore 2.25
-G_M31479_IG06:
-       mov      rdi, 0xD1FFAB1E      ; System.OverflowException
-       call     CORINFO_HELP_NEWSFAST
-       mov      rbx, rax
-       mov      edi, 0x5EFE
-       mov      rsi, 0xD1FFAB1E
-       mov      rax, 0xD1FFAB1E      ; code for CORINFO_HELP_STRCNS
-       call     [rax]CORINFO_HELP_STRCNS
-       mov      rdi, rax
-       mov      rax, 0xD1FFAB1E      ; code for System.SR:GetResourceString(System.String):System.String
-       call     [rax]System.SR:GetResourceString(System.String):System.String
-       mov      rsi, rax
-       mov      rdi, rbx
-       mov      rax, 0xD1FFAB1E      ; code for System.OverflowException:.ctor(System.String):this
-       call     [rax]System.OverflowException:.ctor(System.String):this
-       mov      rdi, rbx
-       call     CORINFO_HELP_THROW
-       int3     
-						;; size=87 bbWeight=0 PerfScore 0.00
+						;; size=2 bbWeight=1 PerfScore 1.50
 
-; Total bytes of code 506, prolog size 8, PerfScore 55.25, instruction count 94, allocated bytes for code 506 (MethodHash=bd4c8508) for method System.Data.SqlTypes.SqlDateTime:.cctor() (FullOpts)
+; Total bytes of code 275, prolog size 4, PerfScore 29.50, instruction count 45, allocated bytes for code 275 (MethodHash=bd4c8508) for method System.Data.SqlTypes.SqlDateTime:.cctor() (FullOpts)
 ; ============================================================

-7 (-2.97 % of base) - System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString

 ; Assembly listing for method System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 13 single block inlinees; 4 inlinees without PGO data
+; 0 inlinees with PGO data; 17 single block inlinees; 5 inlinees without PGO data
 ; Final local variable assignments
 ;
 ;  V00 RetBuf       [V00,T00] (  9,  6   )    long  ->  rbx         single-def
-;  V01 arg0         [V01,T01] (  5,  3.50)  struct (16) [rbp-0x20]  do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
+;* V01 arg0         [V01    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
 ;* V03 tmp1         [V03    ] (  0,  0   )  struct (32) zero-ref    do-not-enreg[SF] ld-addr-op "NewObj constructor temp" <System.Data.SqlTypes.SqlString>
 ;  V04 tmp2         [V04,T06] (  3,  1.50)     ref  ->  r15         class-hnd exact "Inline return value spill temp" <System.String>
 ;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
-;* V06 tmp4         [V06    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V08 tmp6         [V08    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V09 tmp7         [V09,T05] (  2,  2   )    long  ->  rsi         "dup spill"
-;* V10 tmp8         [V10    ] (  0,  0   )    long  ->  zero-ref   
-;* V11 tmp9         [V11    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V12 tmp10        [V12    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;* V13 tmp11        [V13    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
-;* V14 tmp12        [V14    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
-;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
-;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref    "field V05._dateData (fldOffset=0x0)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )   ubyte  ->  zero-ref    "field V06.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V06.m_day (fldOffset=0x4)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )     int  ->  zero-ref    "field V06.m_time (fldOffset=0x8)" P-INDEP
-;  V20 tmp18        [V20,T10] (  2,  1   )    long  ->  rax         "field V07._ticks (fldOffset=0x0)" P-INDEP
-;  V21 tmp19        [V21,T11] (  2,  1   )    long  ->  rdi         "field V11._dateData (fldOffset=0x0)" P-INDEP
-;* V22 tmp20        [V22    ] (  0,  0   )    long  ->  zero-ref    "field V13._dateData (fldOffset=0x0)" P-INDEP
-;* V23 tmp21        [V23    ] (  0,  0   )    long  ->  zero-ref    "field V14._ticks (fldOffset=0x0)" P-INDEP
-;  V24 tmp22        [V24,T04] (  3,  2.50)   ubyte  ->  rsi         "V01.[000..001)"
-;  V25 tmp23        [V25,T07] (  3,  1.50)     ref  ->  r15         "V03.[000..008)"
-;* V26 tmp24        [V26    ] (  0,  0   )     ref  ->  zero-ref    single-def "V03.[008..016)"
-;  V27 tmp25        [V27,T12] (  2,  1   )     int  ->  rax         "V03.[016..020)"
-;* V28 tmp26        [V28    ] (  0,  0   )     int  ->  zero-ref    "V03.[020..024)"
-;  V29 tmp27        [V29,T08] (  3,  1.50)   ubyte  ->  rdi         "V03.[024..025)"
-;  V30 tmp28        [V30,T02] (  3,  3   )     ref  ->  rax         single-def "argument with side effect"
-;  V31 cse0         [V31,T09] (  3,  1.50)    long  ->  rdi         "CSE #02: moderate"
-;  V32 rat0         [V32,T03] (  3,  3   )    long  ->  rsi         "V01.rsi"
+;* V06 tmp4         [V06    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V07 tmp5         [V07    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V10 tmp8         [V10    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V11 tmp9         [V11    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V12 tmp10        [V12    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V13 tmp11        [V13    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V14 tmp12        [V14    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V15 tmp13        [V15    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V16 tmp14        [V16,T05] (  2,  2   )    long  ->  rsi         "dup spill"
+;* V17 tmp15        [V17    ] (  0,  0   )    long  ->  zero-ref   
+;* V18 tmp16        [V18    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V19 tmp17        [V19    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;* V20 tmp18        [V20    ] (  0,  0   )  struct ( 8) zero-ref    "Inlining Arg" <System.DateTime>
+;* V21 tmp19        [V21    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.TimeSpan>
+;* V22 tmp20        [V22    ] (  0,  0   )     int  ->  zero-ref    "Inlining Arg"
+;* V23 tmp21        [V23    ] (  0,  0   )    long  ->  zero-ref    "field V05._dateData (fldOffset=0x0)" P-INDEP
+;* V24 tmp22        [V24    ] (  0,  0   )    long  ->  zero-ref    "field V06._dateData (fldOffset=0x0)" P-INDEP
+;* V25 tmp23        [V25    ] (  0,  0   )   ubyte  ->  zero-ref    "field V07.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V26 tmp24        [V26    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_day (fldOffset=0x4)" P-INDEP
+;* V27 tmp25        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_time (fldOffset=0x8)" P-INDEP
+;  V28 tmp26        [V28,T12] (  2,  1   )    long  ->  rax         "field V08._ticks (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29,T15] (  0,  0   )    long  ->  zero-ref    "field V09._dateData (fldOffset=0x0)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V10._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V10._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp30        [V32    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V11._reference (fldOffset=0x0)" P-INDEP
+;* V33 tmp31        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
+;* V34 tmp32        [V34    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V12._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp33        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;  V36 tmp34        [V36,T13] (  2,  1   )    long  ->  rdi         "field V18._dateData (fldOffset=0x0)" P-INDEP
+;* V37 tmp35        [V37    ] (  0,  0   )    long  ->  zero-ref    "field V20._dateData (fldOffset=0x0)" P-INDEP
+;* V38 tmp36        [V38    ] (  0,  0   )    long  ->  zero-ref    "field V21._ticks (fldOffset=0x0)" P-INDEP
+;  V39 tmp37        [V39,T04] (  3,  2.50)   ubyte  ->  rdi         "V01.[000..001)"
+;  V40 tmp38        [V40,T10] (  2,  1.50)     int  ->  rax         "V01.[004..008)"
+;  V41 tmp39        [V41,T11] (  2,  1.50)     int  ->  rsi         "V01.[008..012)"
+;  V42 tmp40        [V42,T07] (  3,  1.50)     ref  ->  r15         "V03.[000..008)"
+;* V43 tmp41        [V43    ] (  0,  0   )     ref  ->  zero-ref    single-def "V03.[008..016)"
+;  V44 tmp42        [V44,T14] (  2,  1   )     int  ->  rax         "V03.[016..020)"
+;* V45 tmp43        [V45    ] (  0,  0   )     int  ->  zero-ref    "V03.[020..024)"
+;  V46 tmp44        [V46,T08] (  3,  1.50)   ubyte  ->  rdi         "V03.[024..025)"
+;  V47 tmp45        [V47,T02] (  3,  3   )     ref  ->  rax         single-def "argument with side effect"
+;  V48 cse0         [V48,T09] (  3,  1.50)    long  ->  rdi         "CSE #01: moderate"
+;  V49 rat0         [V49,T01] (  4,  4   )    long  ->  rsi         "V01.rsi"
+;  V50 rat1         [V50,T03] (  3,  3   )    long  ->  rdx         "V01.rdx"
 ;
-; Lcl frame size = 16
+; Lcl frame size = 0
 
 G_M21244_IG01:
        push     rbp
        push     r15
        push     rbx
-       sub      rsp, 16
-       lea      rbp, [rsp+0x20]
-       mov      qword ptr [rbp-0x20], rsi
-       mov      dword ptr [rbp-0x18], edx
+       lea      rbp, [rsp+0x10]
        mov      rbx, rdi
-						;; size=23 bbWeight=1 PerfScore 6.00
+						;; size=12 bbWeight=1 PerfScore 3.75
 G_M21244_IG02:
-       movzx    rsi, sil
-       test     esi, esi
+       movzx    rdi, sil
+       shr      rsi, 32
+       mov      eax, esi
+       mov      esi, edx
+       test     edi, edi
        jne      SHORT G_M21244_IG06
-						;; size=8 bbWeight=1 PerfScore 1.50
+						;; size=16 bbWeight=1 PerfScore 2.50
 G_M21244_IG03:
        mov      rsi, 0xD1FFAB1E      ; box for System.Data.SqlTypes.SqlString:Null
-       mov      rdi, gword ptr [rsi]
+       mov      rsi, gword ptr [rsi]
 						;; size=13 bbWeight=0.50 PerfScore 1.12
 G_M21244_IG04:
-       vmovdqu  ymm0, ymmword ptr [rdi+0x08]
+       vmovdqu  ymm0, ymmword ptr [rsi+0x08]
        vmovdqu  ymmword ptr [rbx], ymm0
 						;; size=9 bbWeight=0.50 PerfScore 3.50
 G_M21244_IG05:
        jmp      G_M21244_IG09
 						;; size=5 bbWeight=0.50 PerfScore 1.00
 G_M21244_IG06:
-       mov      byte  ptr [rbp-0x20], sil
-       mov      rdi, qword ptr [rbp-0x20]
-       mov      esi, dword ptr [rbp-0x18]
+       mov      eax, eax
+       shl      rax, 32
+       mov      edi, edi
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rdi, rax
        mov      rsi, rdi
        mov      rdx, 0xD1FFAB1E
        cmp      rsi, rdx
        ja       SHORT G_M21244_IG11
        xor      rsi, rsi
        xor      rdx, rdx
        mov      rcx, 0xD1FFAB1E
        mov      rax, 0xD1FFAB1E      ; code for System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
        call     [rax]System.DateTimeFormat:Format(System.DateTime,System.String,System.IFormatProvider,System.TimeSpan):System.String
        mov      r15, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Globalization.CultureInfo:get_CurrentCulture():System.Globalization.CultureInfo
        call     [rax]System.Globalization.CultureInfo:get_CurrentCulture():System.Globalization.CultureInfo
        mov      rdi, rax
        mov      rax, qword ptr [rax]
        mov      rax, qword ptr [rax+0x40]
        call     [rax+0x28]System.Globalization.CultureInfo:get_LCID():int:this
        test     r15, r15
        je       SHORT G_M21244_IG07
        mov      edi, 1
        jmp      SHORT G_M21244_IG08
-						;; size=120 bbWeight=0.50 PerfScore 13.38
+						;; size=120 bbWeight=0.50 PerfScore 12.50
 G_M21244_IG07:
        xor      edi, edi
        xor      r15, r15
 						;; size=5 bbWeight=0.50 PerfScore 0.25
 G_M21244_IG08:
        mov      gword ptr [rbx], r15
        xor      rcx, rcx
        mov      gword ptr [rbx+0x08], rcx
        mov      dword ptr [rbx+0x10], eax
        mov      dword ptr [rbx+0x14], 25
        mov      byte  ptr [rbx+0x18], dil
 						;; size=23 bbWeight=0.50 PerfScore 2.62
 G_M21244_IG09:
        mov      rax, rbx
 						;; size=3 bbWeight=1 PerfScore 0.25
 G_M21244_IG10:
        vzeroupper 
-       add      rsp, 16
        pop      rbx
        pop      r15
        pop      rbp
        ret      
-						;; size=12 bbWeight=1 PerfScore 3.75
+						;; size=8 bbWeight=1 PerfScore 3.50
 G_M21244_IG11:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 236, prolog size 13, PerfScore 33.38, instruction count 62, allocated bytes for code 236 (MethodHash=f9edad03) for method System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString (FullOpts)
+; Total bytes of code 229, prolog size 9, PerfScore 31.00, instruction count 62, allocated bytes for code 229 (MethodHash=f9edad03) for method System.Data.SqlTypes.SqlString:op_Explicit(System.Data.SqlTypes.SqlDateTime):System.Data.SqlTypes.SqlString (FullOpts)
 ; ============================================================

-3 (-1.90 % of base) - System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 6 single block inlinees; 1 inlinees without PGO data
+; 0 inlinees with PGO data; 10 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  5,  3.50)  struct (16) [rbp-0x18]  do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
+;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    single-def <System.TimeSpan>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V03 tmp1         [V03,T04] (  2,  2   )  struct (16) [rbp-0x28]  do-not-enreg[SR] multireg-ret "folding static readonly field empty struct" <System.Data.SqlTypes.SqlDateTime>
+;  V03 tmp1         [V03,T04] (  2,  2   )  struct (16) [rbp-0x18]  do-not-enreg[SR] multireg-ret "folding static readonly field empty struct" <System.Data.SqlTypes.SqlDateTime>
 ;* V04 tmp2         [V04    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.DateTime>
 ;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.DateTime>
 ;* V06 tmp4         [V06    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Data.SqlTypes.SqlDateTime>
-;* V07 tmp5         [V07    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V08 tmp6         [V08    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V09 tmp7         [V09    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V10 tmp8         [V10,T05] (  2,  2   )    long  ->  rsi         "dup spill"
-;* V11 tmp9         [V11    ] (  0,  0   )    long  ->  zero-ref   
-;* V12 tmp10        [V12    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V13 tmp11        [V13    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V14 tmp12        [V14,T01] (  2,  1.50)    long  ->  rbx         single-def "field V01._ticks (fldOffset=0x0)" P-INDEP
-;* V15 tmp13        [V15    ] (  0,  0   )    long  ->  zero-ref    "field V04._dateData (fldOffset=0x0)" P-INDEP
-;  V16 tmp14        [V16,T07] (  2,  1   )    long  ->  rdi         "field V05._dateData (fldOffset=0x0)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )   ubyte  ->  zero-ref    "field V07.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_day (fldOffset=0x4)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_time (fldOffset=0x8)" P-INDEP
-;  V20 tmp18        [V20,T08] (  2,  1   )    long  ->  rax         "field V08._ticks (fldOffset=0x0)" P-INDEP
-;  V21 tmp19        [V21,T09] (  2,  1   )    long  ->  rdi         "field V12._dateData (fldOffset=0x0)" P-INDEP
-;  V22 tmp20        [V22,T03] (  3,  2.50)   ubyte  ->  rdi         "V00.[000..001)"
-;  V23 cse0         [V23,T06] (  3,  1.50)    long  ->  rdi         "CSE #02: moderate"
-;  V24 rat0         [V24,T02] (  3,  3   )    long  ->  rdi         "V00.rdi"
+;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V10 tmp8         [V10    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V11 tmp9         [V11    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V12 tmp10        [V12    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V13 tmp11        [V13    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V14 tmp12        [V14    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V17 tmp15        [V17,T05] (  2,  2   )    long  ->  rsi         "dup spill"
+;* V18 tmp16        [V18    ] (  0,  0   )    long  ->  zero-ref   
+;* V19 tmp17        [V19    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V20 tmp18        [V20    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V21 tmp19        [V21,T01] (  2,  1.50)    long  ->  rbx         single-def "field V01._ticks (fldOffset=0x0)" P-INDEP
+;* V22 tmp20        [V22    ] (  0,  0   )    long  ->  zero-ref    "field V04._dateData (fldOffset=0x0)" P-INDEP
+;  V23 tmp21        [V23,T09] (  2,  1   )    long  ->  rdi         "field V05._dateData (fldOffset=0x0)" P-INDEP
+;* V24 tmp22        [V24    ] (  0,  0   )    long  ->  zero-ref    "field V07._dateData (fldOffset=0x0)" P-INDEP
+;* V25 tmp23        [V25    ] (  0,  0   )   ubyte  ->  zero-ref    "field V08.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V26 tmp24        [V26    ] (  0,  0   )     int  ->  zero-ref    "field V08.m_day (fldOffset=0x4)" P-INDEP
+;* V27 tmp25        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V08.m_time (fldOffset=0x8)" P-INDEP
+;  V28 tmp26        [V28,T10] (  2,  1   )    long  ->  rax         "field V09._ticks (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29,T12] (  0,  0   )    long  ->  zero-ref    "field V10._dateData (fldOffset=0x0)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V11._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp30        [V32    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V12._reference (fldOffset=0x0)" P-INDEP
+;* V33 tmp31        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;* V34 tmp32        [V34    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V13._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp33        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
+;  V36 tmp34        [V36,T11] (  2,  1   )    long  ->  rdi         "field V19._dateData (fldOffset=0x0)" P-INDEP
+;  V37 tmp35        [V37,T03] (  3,  2.50)   ubyte  ->  rcx         "V00.[000..001)"
+;  V38 tmp36        [V38,T07] (  2,  1.50)     int  ->  rdi         "V00.[004..008)"
+;  V39 tmp37        [V39,T08] (  2,  1.50)     int  ->  rsi         "V00.[008..012)"
+;  V40 cse0         [V40,T06] (  3,  1.50)    long  ->  rdi         "CSE #01: moderate"
+;  V41 rat0         [V41,T00] (  4,  4   )    long  ->  rdi         "V00.rdi"
+;  V42 rat1         [V42,T02] (  3,  3   )    long  ->  rsi         "V00.rsi"
 ;
-; Lcl frame size = 40
+; Lcl frame size = 24
 
 G_M5312_IG01:
        push     rbp
        push     rbx
-       sub      rsp, 40
-       lea      rbp, [rsp+0x30]
-       mov      qword ptr [rbp-0x18], rdi
-       mov      dword ptr [rbp-0x10], esi
+       sub      rsp, 24
+       lea      rbp, [rsp+0x20]
        mov      rbx, rdx
-						;; size=21 bbWeight=1 PerfScore 5.00
+						;; size=14 bbWeight=1 PerfScore 3.00
 G_M5312_IG02:
-       movzx    rdi, dil
-       test     edi, edi
+       movzx    rcx, dil
+       shr      rdi, 32
+       test     ecx, ecx
        jne      SHORT G_M5312_IG05
-						;; size=8 bbWeight=1 PerfScore 1.50
+						;; size=12 bbWeight=1 PerfScore 2.00
 G_M5312_IG03:
        xor      eax, eax
-       mov      qword ptr [rbp-0x28], rax
-       mov      dword ptr [rbp-0x20], eax
-       mov      rax, qword ptr [rbp-0x28]
-       mov      edx, dword ptr [rbp-0x20]
+       mov      qword ptr [rbp-0x18], rax
+       mov      dword ptr [rbp-0x10], eax
+       mov      rax, qword ptr [rbp-0x18]
+       mov      edx, dword ptr [rbp-0x10]
 						;; size=16 bbWeight=0.50 PerfScore 2.12
 G_M5312_IG04:
-       add      rsp, 40
+       add      rsp, 24
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M5312_IG05:
-       mov      byte  ptr [rbp-0x18], dil
-       mov      rdi, qword ptr [rbp-0x18]
-       mov      esi, dword ptr [rbp-0x10]
+       mov      edi, edi
+       shl      rdi, 32
+       mov      eax, ecx
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rdi, rax
        mov      rsi, rdi
        mov      rax, 0xD1FFAB1E
        cmp      rsi, rax
        ja       SHORT G_M5312_IG07
        mov      rsi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:op_Addition(System.DateTime,System.TimeSpan):System.DateTime
        call     [rax]System.DateTime:op_Addition(System.DateTime,System.TimeSpan):System.DateTime
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:FromDateTime(System.DateTime):System.Data.SqlTypes.SqlDateTime
-						;; size=82 bbWeight=0.50 PerfScore 6.25
+						;; size=82 bbWeight=0.50 PerfScore 5.38
 G_M5312_IG06:
-       add      rsp, 40
+       add      rsp, 24
        pop      rbx
        pop      rbp
        tail.jmp [rax]System.Data.SqlTypes.SqlDateTime:FromDateTime(System.DateTime):System.Data.SqlTypes.SqlDateTime
 						;; size=9 bbWeight=0.50 PerfScore 2.62
 G_M5312_IG07:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 158, prolog size 11, PerfScore 18.62, instruction count 43, allocated bytes for code 158 (MethodHash=8806eb3f) for method System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
+; Total bytes of code 155, prolog size 11, PerfScore 16.25, instruction count 43, allocated bytes for code 155 (MethodHash=8806eb3f) for method System.Data.SqlTypes.SqlDateTime:op_Addition(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; ============================================================

-3 (-1.90 % of base) - System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime

 ; Assembly listing for method System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; Emitting BLENDED_CODE for generic X64 + VEX + EVEX on Unix
 ; FullOpts code
 ; optimized code
 ; rbp based frame
 ; partially interruptible
 ; No PGO data
-; 0 inlinees with PGO data; 6 single block inlinees; 1 inlinees without PGO data
+; 0 inlinees with PGO data; 10 single block inlinees; 2 inlinees without PGO data
 ; Final local variable assignments
 ;
-;  V00 arg0         [V00,T00] (  5,  3.50)  struct (16) [rbp-0x18]  do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
+;* V00 arg0         [V00    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SFA] multireg-arg ld-addr-op single-def <System.Data.SqlTypes.SqlDateTime>
 ;* V01 arg1         [V01    ] (  0,  0   )  struct ( 8) zero-ref    single-def <System.TimeSpan>
 ;# V02 OutArgs      [V02    ] (  1,  1   )  struct ( 0) [rsp+0x00]  do-not-enreg[XS] addr-exposed "OutgoingArgSpace" <Empty>
-;  V03 tmp1         [V03,T04] (  2,  2   )  struct (16) [rbp-0x28]  do-not-enreg[SR] multireg-ret "folding static readonly field empty struct" <System.Data.SqlTypes.SqlDateTime>
+;  V03 tmp1         [V03,T04] (  2,  2   )  struct (16) [rbp-0x18]  do-not-enreg[SR] multireg-ret "folding static readonly field empty struct" <System.Data.SqlTypes.SqlDateTime>
 ;* V04 tmp2         [V04    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.DateTime>
 ;* V05 tmp3         [V05    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.DateTime>
 ;* V06 tmp4         [V06    ] (  0,  0   )  struct (16) zero-ref    do-not-enreg[SRM] multireg-ret multireg-dest "Return value temp for multireg return" <System.Data.SqlTypes.SqlDateTime>
-;* V07 tmp5         [V07    ] (  0,  0   )  struct (16) zero-ref    "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
-;* V08 tmp6         [V08    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
-;* V09 tmp7         [V09    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V10 tmp8         [V10,T05] (  2,  2   )    long  ->  rsi         "dup spill"
-;* V11 tmp9         [V11    ] (  0,  0   )    long  ->  zero-ref   
-;* V12 tmp10        [V12    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
-;* V13 tmp11        [V13    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
-;  V14 tmp12        [V14,T01] (  2,  1.50)    long  ->  rbx         single-def "field V01._ticks (fldOffset=0x0)" P-INDEP
-;* V15 tmp13        [V15    ] (  0,  0   )    long  ->  zero-ref    "field V04._dateData (fldOffset=0x0)" P-INDEP
-;  V16 tmp14        [V16,T07] (  2,  1   )    long  ->  rdi         "field V05._dateData (fldOffset=0x0)" P-INDEP
-;* V17 tmp15        [V17    ] (  0,  0   )   ubyte  ->  zero-ref    "field V07.m_fNotNull (fldOffset=0x0)" P-INDEP
-;* V18 tmp16        [V18    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_day (fldOffset=0x4)" P-INDEP
-;* V19 tmp17        [V19    ] (  0,  0   )     int  ->  zero-ref    "field V07.m_time (fldOffset=0x8)" P-INDEP
-;  V20 tmp18        [V20,T08] (  2,  1   )    long  ->  rax         "field V08._ticks (fldOffset=0x0)" P-INDEP
-;  V21 tmp19        [V21,T09] (  2,  1   )    long  ->  rdi         "field V12._dateData (fldOffset=0x0)" P-INDEP
-;  V22 tmp20        [V22,T03] (  3,  2.50)   ubyte  ->  rdi         "V00.[000..001)"
-;  V23 cse0         [V23,T06] (  3,  1.50)    long  ->  rdi         "CSE #02: moderate"
-;  V24 rat0         [V24,T02] (  3,  3   )    long  ->  rdi         "V00.rdi"
+;* V07 tmp5         [V07    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "Inline stloc first use temp" <System.DateTime>
+;* V08 tmp6         [V08    ] (  0,  0   )  struct (16) zero-ref    multireg-arg "Inlining Arg" <System.Data.SqlTypes.SqlDateTime>
+;* V09 tmp7         [V09    ] (  0,  0   )  struct ( 8) zero-ref    "spilled call-like call argument" <System.TimeSpan>
+;* V10 tmp8         [V10    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V11 tmp9         [V11    ] (  0,  0   )  struct (16) zero-ref    <System.ReadOnlySpan`1[uint]>
+;* V12 tmp10        [V12    ] (  0,  0   )  struct (16) zero-ref    ld-addr-op "Inline stloc first use temp" <System.ReadOnlySpan`1[uint]>
+;* V13 tmp11        [V13    ] (  0,  0   )  struct (16) zero-ref    "ReadOnlySpan<T> for CreateSpan<T>" <System.ReadOnlySpan`1[uint]>
+;* V14 tmp12        [V14    ] (  0,  0   )     int  ->  zero-ref    "dup spill"
+;* V15 tmp13        [V15    ] (  0,  0   )     int  ->  zero-ref    "Inline stloc first use temp"
+;* V16 tmp14        [V16    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V17 tmp15        [V17,T05] (  2,  2   )    long  ->  rsi         "dup spill"
+;* V18 tmp16        [V18    ] (  0,  0   )    long  ->  zero-ref   
+;* V19 tmp17        [V19    ] (  0,  0   )  struct ( 8) zero-ref    ld-addr-op "NewObj constructor temp" <System.DateTime>
+;* V20 tmp18        [V20    ] (  0,  0   )    long  ->  zero-ref    "Inlining Arg"
+;  V21 tmp19        [V21,T01] (  2,  1.50)    long  ->  rbx         single-def "field V01._ticks (fldOffset=0x0)" P-INDEP
+;* V22 tmp20        [V22    ] (  0,  0   )    long  ->  zero-ref    "field V04._dateData (fldOffset=0x0)" P-INDEP
+;  V23 tmp21        [V23,T09] (  2,  1   )    long  ->  rdi         "field V05._dateData (fldOffset=0x0)" P-INDEP
+;* V24 tmp22        [V24    ] (  0,  0   )    long  ->  zero-ref    "field V07._dateData (fldOffset=0x0)" P-INDEP
+;* V25 tmp23        [V25    ] (  0,  0   )   ubyte  ->  zero-ref    "field V08.m_fNotNull (fldOffset=0x0)" P-INDEP
+;* V26 tmp24        [V26    ] (  0,  0   )     int  ->  zero-ref    "field V08.m_day (fldOffset=0x4)" P-INDEP
+;* V27 tmp25        [V27    ] (  0,  0   )     int  ->  zero-ref    "field V08.m_time (fldOffset=0x8)" P-INDEP
+;  V28 tmp26        [V28,T10] (  2,  1   )    long  ->  rax         "field V09._ticks (fldOffset=0x0)" P-INDEP
+;* V29 tmp27        [V29,T12] (  0,  0   )    long  ->  zero-ref    "field V10._dateData (fldOffset=0x0)" P-INDEP
+;* V30 tmp28        [V30    ] (  0,  0   )   byref  ->  zero-ref    "field V11._reference (fldOffset=0x0)" P-INDEP
+;* V31 tmp29        [V31    ] (  0,  0   )     int  ->  zero-ref    "field V11._length (fldOffset=0x8)" P-INDEP
+;* V32 tmp30        [V32    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V12._reference (fldOffset=0x0)" P-INDEP
+;* V33 tmp31        [V33    ] (  0,  0   )     int  ->  zero-ref    "field V12._length (fldOffset=0x8)" P-INDEP
+;* V34 tmp32        [V34    ] (  0,  0   )   byref  ->  zero-ref    single-def "field V13._reference (fldOffset=0x0)" P-INDEP
+;* V35 tmp33        [V35    ] (  0,  0   )     int  ->  zero-ref    "field V13._length (fldOffset=0x8)" P-INDEP
+;  V36 tmp34        [V36,T11] (  2,  1   )    long  ->  rdi         "field V19._dateData (fldOffset=0x0)" P-INDEP
+;  V37 tmp35        [V37,T03] (  3,  2.50)   ubyte  ->  rcx         "V00.[000..001)"
+;  V38 tmp36        [V38,T07] (  2,  1.50)     int  ->  rdi         "V00.[004..008)"
+;  V39 tmp37        [V39,T08] (  2,  1.50)     int  ->  rsi         "V00.[008..012)"
+;  V40 cse0         [V40,T06] (  3,  1.50)    long  ->  rdi         "CSE #01: moderate"
+;  V41 rat0         [V41,T00] (  4,  4   )    long  ->  rdi         "V00.rdi"
+;  V42 rat1         [V42,T02] (  3,  3   )    long  ->  rsi         "V00.rsi"
 ;
-; Lcl frame size = 40
+; Lcl frame size = 24
 
 G_M11208_IG01:
        push     rbp
        push     rbx
-       sub      rsp, 40
-       lea      rbp, [rsp+0x30]
-       mov      qword ptr [rbp-0x18], rdi
-       mov      dword ptr [rbp-0x10], esi
+       sub      rsp, 24
+       lea      rbp, [rsp+0x20]
        mov      rbx, rdx
-						;; size=21 bbWeight=1 PerfScore 5.00
+						;; size=14 bbWeight=1 PerfScore 3.00
 G_M11208_IG02:
-       movzx    rdi, dil
-       test     edi, edi
+       movzx    rcx, dil
+       shr      rdi, 32
+       test     ecx, ecx
        jne      SHORT G_M11208_IG05
-						;; size=8 bbWeight=1 PerfScore 1.50
+						;; size=12 bbWeight=1 PerfScore 2.00
 G_M11208_IG03:
        xor      eax, eax
-       mov      qword ptr [rbp-0x28], rax
-       mov      dword ptr [rbp-0x20], eax
-       mov      rax, qword ptr [rbp-0x28]
-       mov      edx, dword ptr [rbp-0x20]
+       mov      qword ptr [rbp-0x18], rax
+       mov      dword ptr [rbp-0x10], eax
+       mov      rax, qword ptr [rbp-0x18]
+       mov      edx, dword ptr [rbp-0x10]
 						;; size=16 bbWeight=0.50 PerfScore 2.12
 G_M11208_IG04:
-       add      rsp, 40
+       add      rsp, 24
        pop      rbx
        pop      rbp
        ret      
 						;; size=7 bbWeight=0.50 PerfScore 1.12
 G_M11208_IG05:
-       mov      byte  ptr [rbp-0x18], dil
-       mov      rdi, qword ptr [rbp-0x18]
-       mov      esi, dword ptr [rbp-0x10]
+       mov      edi, edi
+       shl      rdi, 32
+       mov      eax, ecx
+       or       rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        call     [rax]System.Data.SqlTypes.SqlDateTime:ToTimeSpan(System.Data.SqlTypes.SqlDateTime):System.TimeSpan
        mov      rdi, 0xD1FFAB1E
        add      rdi, rax
        mov      rsi, rdi
        mov      rax, 0xD1FFAB1E
        cmp      rsi, rax
        ja       SHORT G_M11208_IG07
        mov      rsi, rbx
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:op_Subtraction(System.DateTime,System.TimeSpan):System.DateTime
        call     [rax]System.DateTime:op_Subtraction(System.DateTime,System.TimeSpan):System.DateTime
        mov      rdi, rax
        mov      rax, 0xD1FFAB1E      ; code for System.Data.SqlTypes.SqlDateTime:FromDateTime(System.DateTime):System.Data.SqlTypes.SqlDateTime
-						;; size=82 bbWeight=0.50 PerfScore 6.25
+						;; size=82 bbWeight=0.50 PerfScore 5.38
 G_M11208_IG06:
-       add      rsp, 40
+       add      rsp, 24
        pop      rbx
        pop      rbp
        tail.jmp [rax]System.Data.SqlTypes.SqlDateTime:FromDateTime(System.DateTime):System.Data.SqlTypes.SqlDateTime
 						;; size=9 bbWeight=0.50 PerfScore 2.62
 G_M11208_IG07:
        xor      edi, edi
        mov      rax, 0xD1FFAB1E      ; code for System.DateTime:ThrowDateArithmetic(int)
        call     [rax]System.DateTime:ThrowDateArithmetic(int)
        int3     
 						;; size=15 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 158, prolog size 11, PerfScore 18.62, instruction count 43, allocated bytes for code 158 (MethodHash=4557d437) for method System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
+; Total bytes of code 155, prolog size 11, PerfScore 16.25, instruction count 43, allocated bytes for code 155 (MethodHash=4557d437) for method System.Data.SqlTypes.SqlDateTime:op_Subtraction(System.Data.SqlTypes.SqlDateTime,System.TimeSpan):System.Data.SqlTypes.SqlDateTime (FullOpts)
 ; ============================================================

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