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Allow memory intrinsics to be tail calls

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234764 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Krzysztof Parzyszek
2015-04-13 17:16:45 +00:00
parent 12a7039644
commit fcc330abfe
19 changed files with 222 additions and 30 deletions
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lib/Target/XCore/XCoreISelLowering.cpp
+3 -2
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@@ -1423,7 +1423,7 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,
InVals.push_back(FIN);
MemOps.push_back(DAG.getMemcpy(Chain, dl, FIN, ArgDI->SDV,
DAG.getConstant(Size, MVT::i32),
Align, false, false,
Align, false, false, false,
MachinePointerInfo(),
MachinePointerInfo()));
} else {
@@ -1834,10 +1834,11 @@ SDValue XCoreTargetLowering::PerformDAGCombine(SDNode *N,
LD->getAlignment() == Alignment &&
!LD->isVolatile() && !LD->isIndexed() &&
Chain.reachesChainWithoutSideEffects(SDValue(LD, 1))) {
bool isTail = isInTailCallPosition(DAG, ST, Chain);
return DAG.getMemmove(Chain, dl, ST->getBasePtr(),
LD->getBasePtr(),
DAG.getConstant(StoreBits/8, MVT::i32),
Alignment, false, ST->getPointerInfo(),
Alignment, false, isTail, ST->getPointerInfo(),
LD->getPointerInfo());
}
}