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SROA: Avoid struct and array types early to avoid creating an overly large integer type.

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Fixes PR14465.

Differential Revision: http://llvm-reviews.chandlerc.com/D148

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169084 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2012-12-01 11:53:32 +00:00
parent efcdb2944b
commit 5bded7525b
2 changed files with 16 additions and 0 deletions
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lib/Transforms/Scalar/SROA.cpp
+3
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@@ -2164,6 +2164,9 @@ static bool isIntegerWideningViable(const DataLayout &TD,
AllocaPartitioning::const_use_iterator I,
AllocaPartitioning::const_use_iterator E) {
uint64_t SizeInBits = TD.getTypeSizeInBits(AllocaTy);
// Don't create integer types larger than the maximum bitwidth.
if (SizeInBits > IntegerType::MAX_INT_BITS)
return false;
// Don't try to handle allocas with bit-padding.
if (SizeInBits != TD.getTypeStoreSizeInBits(AllocaTy))