RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-22 03:58:16 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Improve comment.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42132 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2007-09-19 10:25:38 +00:00
parent 7801644332
commit 46318cdfd0
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -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