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Revert r100191 since it breaks objc in clang

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100199 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang
2010-04-02 18:43:02 +00:00
parent e33c848fa4
commit e754d3fb85
28 changed files with 143 additions and 314 deletions
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32
lib/Transforms/InstCombine/InstCombineCalls.cpp
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@@ -136,14 +136,8 @@ Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
return 0; // If not 1/2/4/8 bytes, exit.
// Use an integer load+store unless we can find something better.
unsigned SrcAddrSp =
cast<PointerType>(MI->getOperand(2)->getType())->getAddressSpace();
unsigned DstAddrSp =
cast<PointerType>(MI->getOperand(1)->getType())->getAddressSpace();
const IntegerType* IntType = IntegerType::get(MI->getContext(), Size<<3);
Type *NewSrcPtrTy = PointerType::get(IntType, SrcAddrSp);
Type *NewDstPtrTy = PointerType::get(IntType, DstAddrSp);
Type *NewPtrTy =
PointerType::getUnqual(IntegerType::get(MI->getContext(), Size<<3));
// Memcpy forces the use of i8* for the source and destination. That means
// that if you're using memcpy to move one double around, you'll get a cast
@@ -173,10 +167,8 @@ Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
break;
}
if (SrcETy->isSingleValueType()) {
NewSrcPtrTy = PointerType::get(SrcETy, SrcAddrSp);
NewDstPtrTy = PointerType::get(SrcETy, DstAddrSp);
}
if (SrcETy->isSingleValueType())
NewPtrTy = PointerType::getUnqual(SrcETy);
}
}
@@ -186,12 +178,11 @@ Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
SrcAlign = std::max(SrcAlign, CopyAlign);
DstAlign = std::max(DstAlign, CopyAlign);
Value *Src = Builder->CreateBitCast(MI->getOperand(2), NewSrcPtrTy);
Value *Dest = Builder->CreateBitCast(MI->getOperand(1), NewDstPtrTy);
Instruction *L = new LoadInst(Src, "tmp", MI->isVolatile(), SrcAlign);
Value *Src = Builder->CreateBitCast(MI->getOperand(2), NewPtrTy);
Value *Dest = Builder->CreateBitCast(MI->getOperand(1), NewPtrTy);
Instruction *L = new LoadInst(Src, "tmp", false, SrcAlign);
InsertNewInstBefore(L, *MI);
InsertNewInstBefore(new StoreInst(L, Dest, MI->isVolatile(), DstAlign),
*MI);
InsertNewInstBefore(new StoreInst(L, Dest, false, DstAlign), *MI);
// Set the size of the copy to 0, it will be deleted on the next iteration.
MI->setOperand(3, Constant::getNullValue(MemOpLength->getType()));
@@ -284,11 +275,10 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
if (GVSrc->isConstant()) {
Module *M = CI.getParent()->getParent()->getParent();
Intrinsic::ID MemCpyID = Intrinsic::memcpy;
const Type *Tys[3] = { CI.getOperand(1)->getType(),
CI.getOperand(2)->getType(),
CI.getOperand(3)->getType() };
const Type *Tys[1];
Tys[0] = CI.getOperand(3)->getType();
CI.setOperand(0,
Intrinsic::getDeclaration(M, MemCpyID, Tys, 3));
Intrinsic::getDeclaration(M, MemCpyID, Tys, 1));
Changed = true;
}
}