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emit_x64: bug: OP m/r64, imm32 form instructions sign-extend their immediate on x64

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This commit is contained in:
MerryMage 2018-01-13 17:59:50 +00:00
parent 989d036e65
commit e4615a4562
4 changed files with 29 additions and 8 deletions
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19
src/backend_x64/reg_alloc.cpp
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@ -107,6 +107,13 @@ bool Argument::FitsInImmediateU32() const {
return imm < 0x100000000;
}
bool Argument::FitsInImmediateS32() const {
if (!IsImmediate())
return false;
s64 imm = static_cast<s64>(ImmediateToU64(value));
return -s64(0x80000000) <= imm && imm <= s64(0x7FFFFFFF);
}
bool Argument::GetImmediateU1() const {
return value.GetU1();
}
@ -129,19 +136,31 @@ u32 Argument::GetImmediateU32() const {
return u32(imm);
}
u64 Argument::GetImmediateS32() const {
ASSERT(FitsInImmediateS32());
u64 imm = ImmediateToU64(value);
return imm;
}
u64 Argument::GetImmediateU64() const {
return ImmediateToU64(value);
}
bool Argument::IsInGpr() const {
if (IsImmediate())
return false;
return HostLocIsGPR(*reg_alloc.ValueLocation(value.GetInst()));
}
bool Argument::IsInXmm() const {
if (IsImmediate())
return false;
return HostLocIsXMM(*reg_alloc.ValueLocation(value.GetInst()));
}
bool Argument::IsInMemory() const {
if (IsImmediate())
return false;
return HostLocIsSpill(*reg_alloc.ValueLocation(value.GetInst()));
}