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Fix PR1446 by not scalarrepl'ing giant structures. 

llvm-svn: 37326
This commit is contained in:
Chris Lattner 2007-05-24 18:43:04 +00:00
parent 49a34fcca7
commit 80c94a4a04
1 changed files with 5 additions and 1 deletions
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6
llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp
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@ -148,6 +148,8 @@ bool SROA::performScalarRepl(Function &F) {
if (AllocationInst *A = dyn_cast<AllocationInst>(I))
WorkList.push_back(A);
const TargetData &TD = getAnalysis<TargetData>();
// Process the worklist
bool Changed = false;
while (!WorkList.empty()) {
@ -177,7 +179,9 @@ bool SROA::performScalarRepl(Function &F) {
// value cannot be decomposed at all.
if (!AI->isArrayAllocation() &&
(isa<StructType>(AI->getAllocatedType()) ||
isa<ArrayType>(AI->getAllocatedType()))) {
isa<ArrayType>(AI->getAllocatedType())) &&
AI->getAllocatedType()->isSized() &&
TD.getTypeSize(AI->getAllocatedType()) < 128) {
// Check that all of the users of the allocation are capable of being
// transformed.
switch (isSafeAllocaToScalarRepl(AI)) {