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EmitX64: Don't give MOVSX or MOVZX an immediate oparg

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This commit is contained in:
MerryMage 2016-08-06 01:03:39 +01:00
parent 640ce48baa
commit 856298577d
1 changed files with 49 additions and 7 deletions
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42
src/backend_x64/emit_x64.cpp
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@ -320,7 +320,13 @@ void EmitX64::EmitGetOverflowFromOp(IR::Block&, IR::Inst*) {
void EmitX64::EmitPack2x32To1x64(IR::Block&, IR::Inst* inst) {
OpArg lo;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
lo = Gen::R(result);
} else {
std::tie(lo, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
X64Reg hi = reg_alloc.UseScratchRegister(inst->GetArg(1), any_gpr);
code->SHL(64, R(hi), Imm8(32));
@ -900,7 +906,13 @@ void EmitX64::EmitNot(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitSignExtendWordToLong(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVSX(64, 32, result, source);
}
@ -908,7 +920,13 @@ void EmitX64::EmitSignExtendWordToLong(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitSignExtendHalfToWord(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVSX(32, 16, result, source);
}
@ -916,7 +934,13 @@ void EmitX64::EmitSignExtendHalfToWord(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitSignExtendByteToWord(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVSX(32, 8, result, source);
}
@ -924,7 +948,13 @@ void EmitX64::EmitSignExtendByteToWord(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitZeroExtendWordToLong(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVZX(64, 32, result, source);
}
@ -932,7 +962,13 @@ void EmitX64::EmitZeroExtendWordToLong(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitZeroExtendHalfToWord(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVZX(32, 16, result, source);
}
@ -940,7 +976,13 @@ void EmitX64::EmitZeroExtendHalfToWord(IR::Block&, IR::Inst* inst) {
void EmitX64::EmitZeroExtendByteToWord(IR::Block&, IR::Inst* inst) {
OpArg source;
X64Reg result;
if (inst->GetArg(0).IsImmediate()) {
// TODO: Optimize
result = reg_alloc.UseDefRegister(inst->GetArg(0), inst, any_gpr);
source = Gen::R(result);
} else {
std::tie(source, result) = reg_alloc.UseDefOpArg(inst->GetArg(0), inst, any_gpr);
}
code->MOVZX(32, 8, result, source);
}