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reg_alloc: Handle XMM registers in LoadImmediate

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This commit is contained in:
MerryMage 2017-08-16 23:11:05 +01:00
parent 993e142c6b
commit 1613846ab0
1 changed files with 20 additions and 7 deletions
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27
src/backend_x64/reg_alloc.cpp
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@ -398,14 +398,27 @@ void RegAlloc::DefineValueImpl(IR::Inst* def_inst, const IR::Value& use_inst) {
HostLoc RegAlloc::LoadImmediate(IR::Value imm, HostLoc host_loc) { HostLoc RegAlloc::LoadImmediate(IR::Value imm, HostLoc host_loc) {
ASSERT_MSG(imm.IsImmediate(), "imm is not an immediate"); ASSERT_MSG(imm.IsImmediate(), "imm is not an immediate");
Xbyak::Reg64 reg = HostLocToReg64(host_loc); if (HostLocIsGPR(host_loc)) {
Xbyak::Reg64 reg = HostLocToReg64(host_loc);
u64 imm_value = ImmediateToU64(imm);
if (imm_value == 0)
code->xor_(reg.cvt32(), reg.cvt32());
else
code->mov(reg, imm_value);
return host_loc;
}
u64 imm_value = ImmediateToU64(imm); if (HostLocIsXMM(host_loc)) {
if (imm_value == 0) Xbyak::Xmm reg = HostLocToXmm(host_loc);
code->xor_(reg.cvt32(), reg.cvt32()); u64 imm_value = ImmediateToU64(imm);
else if (imm_value == 0)
code->mov(reg, imm_value); code->pxor(reg, reg);
return host_loc; else
code->movdqa(reg, code->MConst(imm_value)); // TODO: movaps/movapd more appropriate sometimes
return host_loc;
}
UNREACHABLE();
} }
void RegAlloc::Move(HostLoc to, HostLoc from) { void RegAlloc::Move(HostLoc to, HostLoc from) {