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| author | Chris Lattner <sabre@nondot.org> | 2008-05-20 22:05:28 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-05-20 22:05:28 +0000 |
| commit | 337c1ca1c56ac11c8f8c2f158206e49cd003f129 (patch) | |
| tree | de401a650d31ad111f79e4b8619140f989e61dda /lib/Analysis/AliasSetTracker.cpp | |
| parent | cef29cce4633c8276db97033b23451aa0bc731af (diff) | |
| download | external_llvm-337c1ca1c56ac11c8f8c2f158206e49cd003f129.tar.gz external_llvm-337c1ca1c56ac11c8f8c2f158206e49cd003f129.tar.bz2 external_llvm-337c1ca1c56ac11c8f8c2f158206e49cd003f129.zip | |
Fix PR2346 by marking vaarg as volatile so that licm doesn't try to
hoist them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51356 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/AliasSetTracker.cpp')
| -rw-r--r-- | lib/Analysis/AliasSetTracker.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp index 68603e53b6..228bb80ae3 100644 --- a/lib/Analysis/AliasSetTracker.cpp +++ b/lib/Analysis/AliasSetTracker.cpp @@ -294,7 +294,10 @@ bool AliasSetTracker::add(FreeInst *FI) { bool AliasSetTracker::add(VAArgInst *VAAI) { bool NewPtr; - addPointer(VAAI->getOperand(0), ~0, AliasSet::ModRef, NewPtr); + AliasSet &AS = addPointer(VAAI->getOperand(0), ~0, AliasSet::ModRef, NewPtr); + + // Treat vaarg instructions as volatile (not to be moved). + AS.setVolatile(); return NewPtr; } |