Remove MallocInst from LLVM Instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index f635af3..ea2164f 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -6300,16 +6300,6 @@
return SelectInst::Create(LHSI->getOperand(0), Op1, Op2);
break;
}
- case Instruction::Malloc:
- // If we have (malloc != null), and if the malloc has a single use, we
- // can assume it is successful and remove the malloc.
- if (LHSI->hasOneUse() && isa<ConstantPointerNull>(RHSC)) {
- Worklist.Add(LHSI);
- return ReplaceInstUsesWith(I,
- ConstantInt::get(Type::getInt1Ty(*Context),
- !I.isTrueWhenEqual()));
- }
- break;
case Instruction::Call:
// If we have (malloc != null), and if the malloc has a single use, we
// can assume it is successful and remove the malloc.
@@ -7809,11 +7799,7 @@
Amt = AllocaBuilder.CreateAdd(Amt, Off, "tmp");
}
- AllocationInst *New;
- if (isa<MallocInst>(AI))
- New = AllocaBuilder.CreateMalloc(CastElTy, Amt);
- else
- New = AllocaBuilder.CreateAlloca(CastElTy, Amt);
+ AllocationInst *New = AllocaBuilder.CreateAlloca(CastElTy, Amt);
New->setAlignment(AI.getAlignment());
New->takeName(&AI);
@@ -11213,15 +11199,8 @@
if (const ConstantInt *C = dyn_cast<ConstantInt>(AI.getArraySize())) {
const Type *NewTy =
ArrayType::get(AI.getAllocatedType(), C->getZExtValue());
- AllocationInst *New = 0;
-
- // Create and insert the replacement instruction...
- if (isa<MallocInst>(AI))
- New = Builder->CreateMalloc(NewTy, 0, AI.getName());
- else {
- assert(isa<AllocaInst>(AI) && "Unknown type of allocation inst!");
- New = Builder->CreateAlloca(NewTy, 0, AI.getName());
- }
+ assert(isa<AllocaInst>(AI) && "Unknown type of allocation inst!");
+ AllocationInst *New = Builder->CreateAlloca(NewTy, 0, AI.getName());
New->setAlignment(AI.getAlignment());
// Scan to the end of the allocation instructions, to skip over a block of
@@ -11294,12 +11273,6 @@
}
}
- // Change free(malloc) into nothing, if the malloc has a single use.
- if (MallocInst *MI = dyn_cast<MallocInst>(Op))
- if (MI->hasOneUse()) {
- EraseInstFromFunction(FI);
- return EraseInstFromFunction(*MI);
- }
if (isMalloc(Op)) {
if (CallInst* CI = extractMallocCallFromBitCast(Op)) {
if (Op->hasOneUse() && CI->hasOneUse()) {