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Improve comment.
author
Duncan Sands
<baldrick@free.fr>
Wed, 19 Sep 2007 10:25:38 +0000
(10:25 +0000)
committer
Duncan Sands
<baldrick@free.fr>
Wed, 19 Sep 2007 10:25:38 +0000
(10:25 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42132
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Transforms/Scalar/InstructionCombining.cpp
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diff --git
a/lib/Transforms/Scalar/InstructionCombining.cpp
b/lib/Transforms/Scalar/InstructionCombining.cpp
index 07eb2528c455531ce8e2c1495f66be95bb6137af..3a7d1018c40c1784aa1f6b10b1ba254a56fa6541 100644
(file)
--- a/
lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/
lib/Transforms/Scalar/InstructionCombining.cpp
@@
-8939,8
+8939,9
@@
static bool isSafeToLoadUnconditionally(Value *V, Instruction *ScanFrom) {
// If it is an alloca it is always safe to load from.
if (isa<AllocaInst>(V)) return true;
- //
Don't try to evaluate aliases. External weak GV can be null
.
+ //
If it is a global variable it is mostly safe to load from
.
if (const GlobalValue *GV = dyn_cast<GlobalVariable>(V))
+ // Don't try to evaluate aliases. External weak GV can be null.
return !isa<GlobalAlias>(GV) && !GV->hasExternalWeakLinkage();
// Otherwise, be a little bit agressive by scanning the local block where we