[llvm-commits] [llvm] r92492 - /llvm/trunk/lib/VMCore/Instruction.cpp

[Dan Gohman]

Author: djg
Date: Mon Jan  4 12:38:39 2010
New Revision: 92492

URL: http://llvm.org/viewvc/llvm-project?rev=92492&view=rev
Log:
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Modified:
    llvm/trunk/lib/VMCore/Instruction.cpp

Modified: llvm/trunk/lib/VMCore/Instruction.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/VMCore/Instruction.cpp?rev=92492&r1=92491&r2=92492&view=diff

==============================================================================
--- llvm/trunk/lib/VMCore/Instruction.cpp (original)
+++ llvm/trunk/lib/VMCore/Instruction.cpp Mon Jan  4 12:38:39 2010
@@ -399,6 +399,8 @@
   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)))