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Reapply address space patch after fixing an issue in MemCopyOptimizer.

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Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100191 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang
2010-04-02 18:04:15 +00:00
parent a6194b3a2a
commit e33c848fa4
28 changed files with 314 additions and 143 deletions
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32
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@@ -3731,28 +3731,50 @@ SelectionDAGBuilder::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
case Intrinsic::longjmp:
return "_longjmp"+!TLI.usesUnderscoreLongJmp();
case Intrinsic::memcpy: {
// Assert for address < 256 since we support only user defined address
// spaces.
assert(cast<PointerType>(I.getOperand(1)->getType())->getAddressSpace()
< 256 &&
cast<PointerType>(I.getOperand(2)->getType())->getAddressSpace()
< 256 &&
"Unknown address space");
SDValue Op1 = getValue(I.getOperand(1));
SDValue Op2 = getValue(I.getOperand(2));
SDValue Op3 = getValue(I.getOperand(3));
unsigned Align = cast<ConstantInt>(I.getOperand(4))->getZExtValue();
DAG.setRoot(DAG.getMemcpy(getRoot(), dl, Op1, Op2, Op3, Align, false,
bool isVol = cast<ConstantInt>(I.getOperand(5))->getZExtValue();
DAG.setRoot(DAG.getMemcpy(getRoot(), dl, Op1, Op2, Op3, Align, isVol, false,
I.getOperand(1), 0, I.getOperand(2), 0));
return 0;
}
case Intrinsic::memset: {
// Assert for address < 256 since we support only user defined address
// spaces.
assert(cast<PointerType>(I.getOperand(1)->getType())->getAddressSpace()
< 256 &&
"Unknown address space");
SDValue Op1 = getValue(I.getOperand(1));
SDValue Op2 = getValue(I.getOperand(2));
SDValue Op3 = getValue(I.getOperand(3));
unsigned Align = cast<ConstantInt>(I.getOperand(4))->getZExtValue();
DAG.setRoot(DAG.getMemset(getRoot(), dl, Op1, Op2, Op3, Align,
bool isVol = cast<ConstantInt>(I.getOperand(5))->getZExtValue();
DAG.setRoot(DAG.getMemset(getRoot(), dl, Op1, Op2, Op3, Align, isVol,
I.getOperand(1), 0));
return 0;
}
case Intrinsic::memmove: {
// Assert for address < 256 since we support only user defined address
// spaces.
assert(cast<PointerType>(I.getOperand(1)->getType())->getAddressSpace()
< 256 &&
cast<PointerType>(I.getOperand(2)->getType())->getAddressSpace()
< 256 &&
"Unknown address space");
SDValue Op1 = getValue(I.getOperand(1));
SDValue Op2 = getValue(I.getOperand(2));
SDValue Op3 = getValue(I.getOperand(3));
unsigned Align = cast<ConstantInt>(I.getOperand(4))->getZExtValue();
bool isVol = cast<ConstantInt>(I.getOperand(5))->getZExtValue();
// If the source and destination are known to not be aliases, we can
// lower memmove as memcpy.
@@ -3761,12 +3783,12 @@ SelectionDAGBuilder::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
Size = C->getZExtValue();
if (AA->alias(I.getOperand(1), Size, I.getOperand(2), Size) ==
AliasAnalysis::NoAlias) {
DAG.setRoot(DAG.getMemcpy(getRoot(), dl, Op1, Op2, Op3, Align, false,
I.getOperand(1), 0, I.getOperand(2), 0));
DAG.setRoot(DAG.getMemcpy(getRoot(), dl, Op1, Op2, Op3, Align, isVol,
false, I.getOperand(1), 0, I.getOperand(2), 0));
return 0;
}
DAG.setRoot(DAG.getMemmove(getRoot(), dl, Op1, Op2, Op3, Align,
DAG.setRoot(DAG.getMemmove(getRoot(), dl, Op1, Op2, Op3, Align, isVol,
I.getOperand(1), 0, I.getOperand(2), 0));
return 0;
}