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reapply r101364, which has been backed out in r101368

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with a fix

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101397 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif
2010-04-15 20:51:13 +00:00
parent 83821c8941
commit 2ff961f668
43 changed files with 578 additions and 587 deletions
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4
lib/Analysis/MemoryBuiltins.cpp
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@@ -103,7 +103,7 @@ static Value *computeArraySize(const CallInst *CI, const TargetData *TD,
// If malloc calls' arg can be determined to be a multiple of ElementSize,
// return the multiple. Otherwise, return NULL.
Value *MallocArg = CI->getOperand(1);
Value *MallocArg = CI->getOperand(0);
Value *Multiple = NULL;
if (ComputeMultiple(MallocArg, ElementSize, Multiple,
LookThroughSExt))
@@ -120,7 +120,7 @@ const CallInst *llvm::isArrayMalloc(const Value *I, const TargetData *TD) {
Value *ArraySize = computeArraySize(CI, TD);
if (ArraySize &&
ArraySize != ConstantInt::get(CI->getOperand(1)->getType(), 1))
ArraySize != ConstantInt::get(CI->getOperand(0)->getType(), 1))
return CI;
// CI is a non-array malloc or we can't figure out that it is an array malloc.