deps: V8: cherry-pick 9040405 from upstream

Original commit message:

  s390x: fix high 32-bit word corruption issue

  R=joransiu@ca.ibm.com

  Change-Id: I9a2cf0f3e4a33dc4b86c83acfefcd27968bbcdb4
  Reviewed-on: https://chromium-review.googlesource.com/1176424
  Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
  Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
  Cr-Commit-Position: refs/heads/master@{#55143}

Refs: v8/v8@ca95cd9

PR-URL: #22375
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Author: Junliang Yan

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 6
 #define V8_MINOR_VERSION 2
 #define V8_BUILD_NUMBER 414
-#define V8_PATCH_LEVEL 65
+#define V8_PATCH_LEVEL 66
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/src/compiler/s390/instruction-selector-s390.cc

@@ -318,12 +318,12 @@ ArchOpcode SelectLoadOpcode(Node* node) {
   /* Float unary op*/              \
   V(BitcastFloat32ToInt32)         \
   /* V(TruncateFloat64ToWord32) */ \
-  /* V(RoundFloat64ToInt32)     */ \
-  /* V(TruncateFloat32ToInt32)  */ \
-  /* V(TruncateFloat32ToUint32) */ \
-  /* V(TruncateFloat64ToUint32) */ \
-  /* V(ChangeFloat64ToInt32)    */ \
-  /* V(ChangeFloat64ToUint32)   */ \
+  V(RoundFloat64ToInt32)           \
+  V(TruncateFloat32ToInt32)        \
+  V(TruncateFloat32ToUint32)       \
+  V(TruncateFloat64ToUint32)       \
+  V(ChangeFloat64ToInt32)          \
+  V(ChangeFloat64ToUint32)         \
   /* Word32 unary op */            \
   V(Word32Clz)                     \
   V(Word32Popcnt)                  \

deps/v8/src/s390/macro-assembler-s390.cc

@@ -704,6 +704,9 @@ void TurboAssembler::ConvertDoubleToInt32(const Register dst,
       UNIMPLEMENTED();
       break;
   }
+#ifdef V8_TARGET_ARCH_S390X
+  lghi(dst, Operand::Zero());
+#endif
   cfdbr(m, dst, double_input);
 }
 
@@ -728,6 +731,9 @@ void TurboAssembler::ConvertFloat32ToInt32(const Register result,
       UNIMPLEMENTED();
       break;
   }
+#ifdef V8_TARGET_ARCH_S390X
+  lghi(result, Operand::Zero());
+#endif
   cfebr(m, result, double_input);
 }
 
@@ -752,6 +758,9 @@ void TurboAssembler::ConvertFloat32ToUnsignedInt32(
       UNIMPLEMENTED();
       break;
   }
+#ifdef V8_TARGET_ARCH_S390X
+  lghi(result, Operand::Zero());
+#endif
   clfebr(m, Condition(0), result, double_input);
 }
 
@@ -824,6 +833,9 @@ void TurboAssembler::ConvertDoubleToUnsignedInt32(
       UNIMPLEMENTED();
       break;
   }
+#ifdef V8_TARGET_ARCH_S390X
+  lghi(dst, Operand::Zero());
+#endif
   clfdbr(m, Condition(0), dst, double_input);
 }