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Teach fast isel about vector stores, and make DoSelectCall return false when it fails to emit a store. This fixes <rdar://problem/10215997>.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142432 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2011-10-18 22:11:33 +00:00
parent 564392bd3f
commit e482471402
1 changed files with 24 additions and 3 deletions
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27
lib/Target/X86/X86FastISel.cpp
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@ -258,6 +258,18 @@ X86FastISel::X86FastEmitStore(EVT VT, unsigned Val, const X86AddressMode &AM) {
Opc = X86ScalarSSEf64 ?
(Subtarget->hasAVX() ? X86::VMOVSDmr : X86::MOVSDmr) : X86::ST_Fp64m;
break;
case MVT::v4f32:
Opc = X86::MOVAPSmr;
break;
case MVT::v2f64:
Opc = X86::MOVAPDmr;
break;
case MVT::v4i32:
case MVT::v2i64:
case MVT::v8i16:
case MVT::v16i8:
Opc = X86::MOVDQAmr;
break;
}
addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt,
@ -671,7 +683,14 @@ bool X86FastISel::X86SelectCallAddress(const Value *V, X86AddressMode &AM) {
/// X86SelectStore - Select and emit code to implement store instructions.
bool X86FastISel::X86SelectStore(const Instruction *I) {
// Atomic stores need special handling.
if (cast<StoreInst>(I)->isAtomic())
const StoreInst *S = cast<StoreInst>(I);
if (S->isAtomic())
return false;
unsigned SABIAlignment =
TD.getABITypeAlignment(S->getValueOperand()->getType());
if (S->getAlignment() != 0 && S->getAlignment() < SABIAlignment)
return false;
MVT VT;
@ -1740,9 +1759,11 @@ bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) {
// If this is a really simple value, emit this with the Value* version
// of X86FastEmitStore. If it isn't simple, we don't want to do this,
// as it can cause us to reevaluate the argument.
X86FastEmitStore(ArgVT, ArgVal, AM);
if (!X86FastEmitStore(ArgVT, ArgVal, AM))
return false;
} else {
X86FastEmitStore(ArgVT, Arg, AM);
if (!X86FastEmitStore(ArgVT, Arg, AM))
return false;
}
}
}