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Use ReplaceInstUsesWith instead of replaceAllUsesWith where appropriate in instcombine.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131512 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2011-05-18 00:32:01 +00:00
parent 28b42afcb8
commit 3e22cb9ec3
3 changed files with 11 additions and 11 deletions
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12
lib/Transforms/InstCombine/InstCombineCalls.cpp
View File

@ -835,7 +835,7 @@ Instruction *InstCombiner::visitCallSite(CallSite CS) {
// If OldCall dues not return void then replaceAllUsesWith undef.
// This allows ValueHandlers and custom metadata to adjust itself.
if (!OldCall->getType()->isVoidTy())
OldCall->replaceAllUsesWith(UndefValue::get(OldCall->getType()));
ReplaceInstUsesWith(*OldCall, UndefValue::get(OldCall->getType()));
if (isa<CallInst>(OldCall))
return EraseInstFromFunction(*OldCall);
@ -857,8 +857,8 @@ Instruction *InstCombiner::visitCallSite(CallSite CS) {
// If CS does not return void then replaceAllUsesWith undef.
// This allows ValueHandlers and custom metadata to adjust itself.
if (!CS.getInstruction()->getType()->isVoidTy())
CS.getInstruction()->
replaceAllUsesWith(UndefValue::get(CS.getInstruction()->getType()));
ReplaceInstUsesWith(*CS.getInstruction(),
UndefValue::get(CS.getInstruction()->getType()));
if (InvokeInst *II = dyn_cast<InvokeInst>(CS.getInstruction())) {
// Don't break the CFG, insert a dummy cond branch.
@ -1145,8 +1145,8 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) {
}
if (!Caller->use_empty())
Caller->replaceAllUsesWith(NV);
ReplaceInstUsesWith(*Caller, NV);
EraseInstFromFunction(*Caller);
return true;
}
@ -1291,7 +1291,7 @@ Instruction *InstCombiner::transformCallThroughTrampoline(CallSite CS) {
cast<CallInst>(NewCaller)->setAttributes(NewPAL);
}
if (!Caller->getType()->isVoidTy())
Caller->replaceAllUsesWith(NewCaller);
ReplaceInstUsesWith(*Caller, NewCaller);
Caller->eraseFromParent();
Worklist.Remove(Caller);
return 0;

4
lib/Transforms/InstCombine/InstCombineCasts.cpp
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@ -133,7 +133,7 @@ Instruction *InstCombiner::PromoteCastOfAllocation(BitCastInst &CI,
// New is the allocation instruction, pointer typed. AI is the original
// allocation instruction, also pointer typed. Thus, cast to use is BitCast.
Value *NewCast = AllocaBuilder.CreateBitCast(New, AI.getType(), "tmpcast");
AI.replaceAllUsesWith(NewCast);
ReplaceInstUsesWith(AI, NewCast);
}
return ReplaceInstUsesWith(CI, New);
}
@ -1228,7 +1228,7 @@ Instruction *InstCombiner::visitFPTrunc(FPTruncInst &CI) {
// Remove the old Call. With -fmath-errno, it won't get marked readnone.
Call->replaceAllUsesWith(UndefValue::get(Call->getType()));
ReplaceInstUsesWith(*Call, UndefValue::get(Call->getType()));
EraseInstFromFunction(*Call);
return ret;
}

6
lib/Transforms/InstCombine/InstructionCombining.cpp
View File

@ -1261,7 +1261,7 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
case Intrinsic::sadd_with_overflow:
if (*EV.idx_begin() == 0) { // Normal result.
Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
II->replaceAllUsesWith(UndefValue::get(II->getType()));
ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
EraseInstFromFunction(*II);
return BinaryOperator::CreateAdd(LHS, RHS);
}
@ -1278,7 +1278,7 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
case Intrinsic::ssub_with_overflow:
if (*EV.idx_begin() == 0) { // Normal result.
Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
II->replaceAllUsesWith(UndefValue::get(II->getType()));
ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
EraseInstFromFunction(*II);
return BinaryOperator::CreateSub(LHS, RHS);
}
@ -1287,7 +1287,7 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
case Intrinsic::smul_with_overflow:
if (*EV.idx_begin() == 0) { // Normal result.
Value *LHS = II->getArgOperand(0), *RHS = II->getArgOperand(1);
II->replaceAllUsesWith(UndefValue::get(II->getType()));
ReplaceInstUsesWith(*II, UndefValue::get(II->getType()));
EraseInstFromFunction(*II);
return BinaryOperator::CreateMul(LHS, RHS);
}