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| author | Dan Gohman <gohman@apple.com> | 2009-08-19 00:11:12 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-08-19 00:11:12 +0000 |
| commit | dea2358c684926e11dc550f536b4f21b18af9dfb (patch) | |
| tree | 5638039d99dc823fa8c35afd36a8d9f2edf17c01 /llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp | |
| parent | 2fa67c9f70597ee5537e62301a1e1a4937e53550 (diff) | |
| download | bcm5719-llvm-dea2358c684926e11dc550f536b4f21b18af9dfb.tar.gz bcm5719-llvm-dea2358c684926e11dc550f536b4f21b18af9dfb.zip | |
Fix SimplifyLibcalls and ValueTracking to check mayBeOverridden
before performing optimizations based on constant string values.
llvm-svn: 79384
Diffstat (limited to 'llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp index 02b26bdac2b..761c309c200 100644 --- a/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp +++ b/llvm/lib/Transforms/Scalar/SimplifyLibCalls.cpp @@ -438,7 +438,8 @@ static uint64_t GetStringLengthH(Value *V, SmallPtrSet<PHINode*, 32> &PHIs) { // variable that is a constant and is initialized. The referenced constant // initializer is the array that we'll use for optimization. GlobalVariable* GV = dyn_cast<GlobalVariable>(GEP->getOperand(0)); - if (!GV || !GV->isConstant() || !GV->hasInitializer()) + if (!GV || !GV->isConstant() || !GV->hasInitializer() || + GV->mayBeOverridden()) return 0; Constant *GlobalInit = GV->getInitializer(); |
