bool X86FastISel::X86FastEmitStore(EVT VT, unsigned ValReg, bool ValIsKill,
X86AddressMode &AM,
MachineMemOperand *MMO, bool Aligned) {
+ bool HasSSE2 = Subtarget->hasSSE2();
+ bool HasAVX = Subtarget->hasAVX();
+ bool IsNonTemporal = MMO && MMO->isNonTemporal();
+
// Get opcode and regclass of the output for the given store instruction.
unsigned Opc = 0;
switch (VT.getSimpleVT().SimpleTy) {
// FALLTHROUGH, handling i1 as i8.
case MVT::i8: Opc = X86::MOV8mr; break;
case MVT::i16: Opc = X86::MOV16mr; break;
- case MVT::i32: Opc = X86::MOV32mr; break;
- case MVT::i64: Opc = X86::MOV64mr; break; // Must be in x86-64 mode.
+ case MVT::i32:
+ Opc = (IsNonTemporal && HasSSE2) ? X86::MOVNTImr : X86::MOV32mr;
+ break;
+ case MVT::i64:
+ // Must be in x86-64 mode.
+ Opc = (IsNonTemporal && HasSSE2) ? X86::MOVNTI_64mr : X86::MOV64mr;
+ break;
case MVT::f32:
- Opc = X86ScalarSSEf32 ?
- (Subtarget->hasAVX() ? X86::VMOVSSmr : X86::MOVSSmr) : X86::ST_Fp32m;
+ Opc = X86ScalarSSEf32 ?
+ (HasAVX ? X86::VMOVSSmr : X86::MOVSSmr) : X86::ST_Fp32m;
break;
case MVT::f64:
Opc = X86ScalarSSEf64 ?
- (Subtarget->hasAVX() ? X86::VMOVSDmr : X86::MOVSDmr) : X86::ST_Fp64m;
+ (HasAVX ? X86::VMOVSDmr : X86::MOVSDmr) : X86::ST_Fp64m;
break;
case MVT::v4f32:
- if (Aligned)
- Opc = Subtarget->hasAVX() ? X86::VMOVAPSmr : X86::MOVAPSmr;
- else
- Opc = Subtarget->hasAVX() ? X86::VMOVUPSmr : X86::MOVUPSmr;
+ if (Aligned) {
+ if (IsNonTemporal)
+ Opc = HasAVX ? X86::VMOVNTPSmr : X86::MOVNTPSmr;
+ else
+ Opc = HasAVX ? X86::VMOVAPSmr : X86::MOVAPSmr;
+ } else
+ Opc = HasAVX ? X86::VMOVUPSmr : X86::MOVUPSmr;
break;
case MVT::v2f64:
- if (Aligned)
- Opc = Subtarget->hasAVX() ? X86::VMOVAPDmr : X86::MOVAPDmr;
- else
- Opc = Subtarget->hasAVX() ? X86::VMOVUPDmr : X86::MOVUPDmr;
+ if (Aligned) {
+ if (IsNonTemporal)
+ Opc = HasAVX ? X86::VMOVNTPDmr : X86::MOVNTPDmr;
+ else
+ Opc = HasAVX ? X86::VMOVAPDmr : X86::MOVAPDmr;
+ } else
+ Opc = HasAVX ? X86::VMOVUPDmr : X86::MOVUPDmr;
break;
case MVT::v4i32:
case MVT::v2i64:
case MVT::v8i16:
case MVT::v16i8:
- if (Aligned)
- Opc = Subtarget->hasAVX() ? X86::VMOVDQAmr : X86::MOVDQAmr;
- else
+ if (Aligned) {
+ if (IsNonTemporal)
+ Opc = HasAVX ? X86::VMOVNTDQmr : X86::MOVNTDQmr;
+ else
+ Opc = HasAVX ? X86::VMOVDQAmr : X86::MOVDQAmr;
+ } else
Opc = Subtarget->hasAVX() ? X86::VMOVDQUmr : X86::MOVDQUmr;
break;
}
updateValueMap(I, Reg);
return true;
}
+ case Instruction::BitCast: {
+ // Select SSE2/AVX bitcasts between 128/256 bit vector types.
+ if (!Subtarget->hasSSE2())
+ return false;
+
+ EVT SrcVT = TLI.getValueType(DL, I->getOperand(0)->getType());
+ EVT DstVT = TLI.getValueType(DL, I->getType());
+
+ if (!SrcVT.isSimple() || !DstVT.isSimple())
+ return false;
+
+ if (!SrcVT.is128BitVector() &&
+ !(Subtarget->hasAVX() && SrcVT.is256BitVector()))
+ return false;
+
+ unsigned Reg = getRegForValue(I->getOperand(0));
+ if (Reg == 0)
+ return false;
+
+ // No instruction is needed for conversion. Reuse the register used by
+ // the fist operand.
+ updateValueMap(I, Reg);
+ return true;
+ }
}
return false;