diff options
| -rw-r--r-- | lib/VMCore/Instruction.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/VMCore/Instruction.cpp b/lib/VMCore/Instruction.cpp index 170a15f216..3fabfd07b3 100644 --- a/lib/VMCore/Instruction.cpp +++ b/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))) |