diff options
Diffstat (limited to 'deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc')
| -rw-r--r-- | deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc b/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc index b7fece3f72d..74e16a20732 100644 --- a/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc +++ b/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc @@ -1515,12 +1515,14 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction( } break; case kPPC_MulHigh32: - __ mulhw(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), - i.OutputRCBit()); + __ mulhw(r0, i.InputRegister(0), i.InputRegister(1), i.OutputRCBit()); + // High 32 bits are undefined and need to be cleared. + __ clrldi(i.OutputRegister(), r0, Operand(32)); break; case kPPC_MulHighU32: - __ mulhwu(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1), - i.OutputRCBit()); + __ mulhwu(r0, i.InputRegister(0), i.InputRegister(1), i.OutputRCBit()); + // High 32 bits are undefined and need to be cleared. + __ clrldi(i.OutputRegister(), r0, Operand(32)); break; case kPPC_MulDouble: ASSEMBLE_FLOAT_BINOP_RC(fmul, MiscField::decode(instr->opcode())); |