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| author | Dan Gohman <gohman@apple.com> | 2010-01-04 18:38:39 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-01-04 18:38:39 +0000 |
| commit | fc76441623cbd6f5df40800d7b33bb29bcc48c67 (patch) | |
| tree | e45783cf4a3d01553f862bfdbf55b0bfbba998e7 /llvm/lib/VMCore/Instruction.cpp | |
| parent | 5b9019515a371758801e40b7fbba547c6ea135cc (diff) | |
| download | bcm5719-llvm-fc76441623cbd6f5df40800d7b33bb29bcc48c67.tar.gz bcm5719-llvm-fc76441623cbd6f5df40800d7b33bb29bcc48c67.zip | |
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llvm-svn: 92492
Diffstat (limited to 'llvm/lib/VMCore/Instruction.cpp')
| -rw-r--r-- | llvm/lib/VMCore/Instruction.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/VMCore/Instruction.cpp b/llvm/lib/VMCore/Instruction.cpp index 170a15f216f..3fabfd07b31 100644 --- a/llvm/lib/VMCore/Instruction.cpp +++ b/llvm/lib/VMCore/Instruction.cpp @@ -399,6 +399,8 @@ bool Instruction::isSafeToSpeculativelyExecute() const { case Load: { if (cast<LoadInst>(this)->isVolatile()) return false; + // Note that it is not safe to speculate into a malloc'd region because + // malloc may return null. if (isa<AllocaInst>(getOperand(0))) return true; if (GlobalVariable *GV = dyn_cast<GlobalVariable>(getOperand(0))) |
