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deps: patch V8 to 9.6.180.15
Refs: v8/v8@9.6.180.14...9.6.180.15 PR-URL: #40949 Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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4 files changed

+194
-9
lines changed

4 files changed

+194
-9
lines changed

‎deps/v8/include/v8-version.h‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
#define V8_MAJOR_VERSION 9
1212
#define V8_MINOR_VERSION 6
1313
#define V8_BUILD_NUMBER 180
14-
#define V8_PATCH_LEVEL 14
14+
#define V8_PATCH_LEVEL 15
1515

1616
// Use 1 for candidates and 0 otherwise.
1717
// (Boolean macro values are not supported by all preprocessors.)

‎deps/v8/src/codegen/ppc/macro-assembler-ppc.cc‎

Lines changed: 116 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -2804,19 +2804,55 @@ void TurboAssembler::DivU32(Register dst, Register src, Register value, OEBit s,
28042804
}
28052805

28062806
void TurboAssembler::ModS64(Register dst, Register src, Register value) {
2807-
modsd(dst, src, value);
2807+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
2808+
modsd(dst, src, value);
2809+
} else {
2810+
Register scratch = GetRegisterThatIsNotOneOf(dst, src, value);
2811+
Push(scratch);
2812+
divd(scratch, src, value);
2813+
mulld(scratch, scratch, value);
2814+
sub(dst, src, scratch);
2815+
Pop(scratch);
2816+
}
28082817
}
28092818

28102819
void TurboAssembler::ModU64(Register dst, Register src, Register value) {
2811-
modud(dst, src, value);
2820+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
2821+
modud(dst, src, value);
2822+
} else {
2823+
Register scratch = GetRegisterThatIsNotOneOf(dst, src, value);
2824+
Push(scratch);
2825+
divdu(scratch, src, value);
2826+
mulld(scratch, scratch, value);
2827+
sub(dst, src, scratch);
2828+
Pop(scratch);
2829+
}
28122830
}
28132831

28142832
void TurboAssembler::ModS32(Register dst, Register src, Register value) {
2815-
modsw(dst, src, value);
2833+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
2834+
modsw(dst, src, value);
2835+
} else {
2836+
Register scratch = GetRegisterThatIsNotOneOf(dst, src, value);
2837+
Push(scratch);
2838+
divw(scratch, src, value);
2839+
mullw(scratch, scratch, value);
2840+
sub(dst, src, scratch);
2841+
Pop(scratch);
2842+
}
28162843
extsw(dst, dst);
28172844
}
28182845
void TurboAssembler::ModU32(Register dst, Register src, Register value) {
2819-
moduw(dst, src, value);
2846+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
2847+
moduw(dst, src, value);
2848+
} else {
2849+
Register scratch = GetRegisterThatIsNotOneOf(dst, src, value);
2850+
Push(scratch);
2851+
divwu(scratch, src, value);
2852+
mullw(scratch, scratch, value);
2853+
sub(dst, src, scratch);
2854+
Pop(scratch);
2855+
}
28202856
ZeroExtWord32(dst, dst);
28212857
}
28222858

@@ -3718,14 +3754,88 @@ void TurboAssembler::CountLeadingZerosU64(Register dst, Register src, RCBit r) {
37183754
cntlzd(dst, src, r);
37193755
}
37203756

3757+
#define COUNT_TRAILING_ZEROES_SLOW(max_count, scratch1, scratch2) \
3758+
Label loop, done; \
3759+
li(scratch1, Operand(max_count)); \
3760+
mtctr(scratch1); \
3761+
mr(scratch1, src); \
3762+
li(dst, Operand::Zero()); \
3763+
bind(&loop); /* while ((src & 1) == 0) */ \
3764+
andi(scratch2, scratch1, Operand(1)); \
3765+
bne(&done, cr0); \
3766+
srdi(scratch1, scratch1, Operand(1)); /* src >>= 1;*/ \
3767+
addi(dst, dst, Operand(1)); /* dst++ */ \
3768+
bdnz(&loop); \
3769+
bind(&done);
37213770
void TurboAssembler::CountTrailingZerosU32(Register dst, Register src,
3771+
Register scratch1, Register scratch2,
37223772
RCBit r) {
3723-
cnttzw(dst, src, r);
3773+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
3774+
cnttzw(dst, src, r);
3775+
} else {
3776+
COUNT_TRAILING_ZEROES_SLOW(32, scratch1, scratch2);
3777+
}
37243778
}
37253779

37263780
void TurboAssembler::CountTrailingZerosU64(Register dst, Register src,
3781+
Register scratch1, Register scratch2,
37273782
RCBit r) {
3728-
cnttzd(dst, src, r);
3783+
if (CpuFeatures::IsSupported(PPC_9_PLUS)) {
3784+
cnttzd(dst, src, r);
3785+
} else {
3786+
COUNT_TRAILING_ZEROES_SLOW(64, scratch1, scratch2);
3787+
}
3788+
}
3789+
#undef COUNT_TRAILING_ZEROES_SLOW
3790+
3791+
void TurboAssembler::ClearByteU64(Register dst, int byte_idx) {
3792+
CHECK(0 <= byte_idx && byte_idx <= 7);
3793+
int shift = byte_idx*8;
3794+
rldicl(dst, dst, shift, 8);
3795+
rldicl(dst, dst, 64-shift, 0);
3796+
}
3797+
3798+
void TurboAssembler::ReverseBitsU64(Register dst, Register src,
3799+
Register scratch1, Register scratch2) {
3800+
ByteReverseU64(dst, src);
3801+
for (int i = 0; i < 8; i++) {
3802+
ReverseBitsInSingleByteU64(dst, dst, scratch1, scratch2, i);
3803+
}
3804+
}
3805+
3806+
void TurboAssembler::ReverseBitsU32(Register dst, Register src,
3807+
Register scratch1, Register scratch2) {
3808+
ByteReverseU32(dst, src);
3809+
for (int i = 4; i < 8; i++) {
3810+
ReverseBitsInSingleByteU64(dst, dst, scratch1, scratch2, i);
3811+
}
3812+
}
3813+
3814+
// byte_idx=7 refers to least significant byte
3815+
void TurboAssembler::ReverseBitsInSingleByteU64(Register dst, Register src,
3816+
Register scratch1,
3817+
Register scratch2,
3818+
int byte_idx) {
3819+
CHECK(0 <= byte_idx && byte_idx <= 7);
3820+
int j = byte_idx;
3821+
// zero all bits of scratch1
3822+
li(scratch2, Operand(0));
3823+
for (int i = 0; i <= 7; i++) {
3824+
// zero all bits of scratch1
3825+
li(scratch1, Operand(0));
3826+
// move bit (j+1)*8-i-1 of src to bit j*8+i of scratch1, erase bits
3827+
// (j*8+i+1):end of scratch1
3828+
int shift = 7 - (2*i);
3829+
if (shift < 0) shift += 64;
3830+
rldicr(scratch1, src, shift, j*8+i);
3831+
// erase bits start:(j*8-1+i) of scratch1 (inclusive)
3832+
rldicl(scratch1, scratch1, 0, j*8+i);
3833+
// scratch2 = scratch2|scratch1
3834+
orx(scratch2, scratch2, scratch1);
3835+
}
3836+
// clear jth byte of dst and insert jth byte of scratch2
3837+
ClearByteU64(dst, j);
3838+
orx(dst, dst, scratch2);
37293839
}
37303840

37313841
} // namespace internal

‎deps/v8/src/codegen/ppc/macro-assembler-ppc.h‎

Lines changed: 13 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -261,8 +261,19 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
261261

262262
void CountLeadingZerosU32(Register dst, Register src, RCBit r = LeaveRC);
263263
void CountLeadingZerosU64(Register dst, Register src, RCBit r = LeaveRC);
264-
void CountTrailingZerosU32(Register dst, Register src, RCBit r = LeaveRC);
265-
void CountTrailingZerosU64(Register dst, Register src, RCBit r = LeaveRC);
264+
void CountTrailingZerosU32(Register dst, Register src, Register scratch1 = ip,
265+
Register scratch2 = r0, RCBit r = LeaveRC);
266+
void CountTrailingZerosU64(Register dst, Register src, Register scratch1 = ip,
267+
Register scratch2 = r0, RCBit r = LeaveRC);
268+
269+
void ClearByteU64(Register dst, int byte_idx);
270+
void ReverseBitsU64(Register dst, Register src, Register scratch1,
271+
Register scratch2);
272+
void ReverseBitsU32(Register dst, Register src, Register scratch1,
273+
Register scratch2);
274+
void ReverseBitsInSingleByteU64(Register dst, Register src,
275+
Register scratch1, Register scratch2,
276+
int byte_idx);
266277

267278
void AddF64(DoubleRegister dst, DoubleRegister lhs, DoubleRegister rhs,
268279
RCBit r = LeaveRC);

‎deps/v8/test/unittests/assembler/turbo-assembler-ppc-unittest.cc‎

Lines changed: 64 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -62,6 +62,70 @@ TEST_F(TurboAssemblerTest, TestCheck) {
6262
ASSERT_DEATH_IF_SUPPORTED({ f.Call(17); }, "abort: no reason");
6363
}
6464

65+
TEST_F(TurboAssemblerTest, ReverseBitsU64) {
66+
struct {
67+
uint64_t expected; uint64_t input;
68+
} values[] = {
69+
{0x0000000000000000, 0x0000000000000000},
70+
{0xffffffffffffffff, 0xffffffffffffffff},
71+
{0x8000000000000000, 0x0000000000000001},
72+
{0x0000000000000001, 0x8000000000000000},
73+
{0x800066aa22cc4488, 0x1122334455660001},
74+
{0x1122334455660001, 0x800066aa22cc4488},
75+
{0xffffffff00000000, 0x00000000ffffffff},
76+
{0x00000000ffffffff, 0xffffffff00000000},
77+
{0xff01020304050607, 0xe060a020c04080ff},
78+
{0xe060a020c04080ff, 0xff01020304050607},
79+
};
80+
auto buffer = AllocateAssemblerBuffer();
81+
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
82+
buffer->CreateView());
83+
__ set_root_array_available(false);
84+
__ set_abort_hard(true);
85+
__ Push(r4, r5);
86+
__ ReverseBitsU64(r3, r3, r4, r5);
87+
__ Pop(r4, r5);
88+
__ Ret();
89+
CodeDesc desc;
90+
tasm.GetCode(isolate(), &desc);
91+
buffer->MakeExecutable();
92+
auto f = GeneratedCode<uint64_t, uint64_t>::FromBuffer(isolate(),
93+
buffer->start());
94+
for (unsigned int i=0; i < (sizeof(values) / sizeof(values[0])); i++) {
95+
CHECK_EQ(values[i].expected, f.Call(values[i].input));
96+
}
97+
}
98+
99+
TEST_F(TurboAssemblerTest, ReverseBitsU32) {
100+
struct {
101+
uint64_t expected; uint64_t input;
102+
} values[] = {
103+
{0x00000000, 0x00000000},
104+
{0xffffffff, 0xffffffff},
105+
{0x00000001, 0x80000000},
106+
{0x80000000, 0x00000001},
107+
{0x22334455, 0xaa22cc44},
108+
{0xaa22cc44, 0x22334455},
109+
};
110+
auto buffer = AllocateAssemblerBuffer();
111+
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
112+
buffer->CreateView());
113+
__ set_root_array_available(false);
114+
__ set_abort_hard(true);
115+
__ Push(r4, r5);
116+
__ ReverseBitsU32(r3, r3, r4, r5);
117+
__ Pop(r4, r5);
118+
__ Ret();
119+
CodeDesc desc;
120+
tasm.GetCode(isolate(), &desc);
121+
buffer->MakeExecutable();
122+
auto f = GeneratedCode<uint64_t, uint64_t>::FromBuffer(isolate(),
123+
buffer->start());
124+
for (unsigned int i=0; i < (sizeof(values) / sizeof(values[0])); i++) {
125+
CHECK_EQ(values[i].expected, f.Call(values[i].input));
126+
}
127+
}
128+
65129
#undef __
66130

67131
} // namespace internal

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