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| author | Duncan Sands <baldrick@free.fr> | 2009-03-20 21:53:29 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2009-03-20 21:53:29 +0000 |
| commit | ab6b226978644c438a3a7768a06dcd48509d000c (patch) | |
| tree | 8d574fefe86e8fa7cf23552dc4353c69bc8dec20 /lib/Transforms/Utils/CloneFunction.cpp | |
| parent | db95fa131a229652f925794ca7a5b84e9490050b (diff) | |
| download | llvm-ab6b226978644c438a3a7768a06dcd48509d000c.tar.gz llvm-ab6b226978644c438a3a7768a06dcd48509d000c.tar.bz2 llvm-ab6b226978644c438a3a7768a06dcd48509d000c.tar.xz | |
Don't load values out of global constants with weak
linkage: the value may be replaced with something
different at link time. (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67407 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/CloneFunction.cpp')
| -rw-r--r-- | lib/Transforms/Utils/CloneFunction.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/CloneFunction.cpp b/lib/Transforms/Utils/CloneFunction.cpp index 59211028f3..5dc2d1cdc3 100644 --- a/lib/Transforms/Utils/CloneFunction.cpp +++ b/lib/Transforms/Utils/CloneFunction.cpp @@ -335,7 +335,8 @@ ConstantFoldMappedInstruction(const Instruction *I) { if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0])) if (!LI->isVolatile() && CE->getOpcode() == Instruction::GetElementPtr) if (GlobalVariable *GV = dyn_cast<GlobalVariable>(CE->getOperand(0))) - if (GV->isConstant() && !GV->isDeclaration()) + if (GV->isConstant() && !GV->isDeclaration() && + !GV->mayBeOverridden()) return ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(), CE); |