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| author | Dale Johannesen <dalej@apple.com> | 2009-03-03 23:30:00 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2009-03-03 23:30:00 +0000 |
| commit | 738c60f259b75d01649493db902efad0c9f6932d (patch) | |
| tree | a1c94280761c29c679b10ed5b1d1c6a301a631ad /llvm/lib/Transforms/Utils/Local.cpp | |
| parent | 013813dd5d22789a02d19204f8e0abead768f15d (diff) | |
| download | bcm5719-llvm-738c60f259b75d01649493db902efad0c9f6932d.tar.gz bcm5719-llvm-738c60f259b75d01649493db902efad0c9f6932d.zip | |
Marking debug info intrinsics as not touching memory
caused them to be considered trivially dead. Fix this.
llvm-svn: 65979
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/Local.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp index 38809e5e1d7..d2cbec0226e 100644 --- a/llvm/lib/Transforms/Utils/Local.cpp +++ b/llvm/lib/Transforms/Utils/Local.cpp @@ -159,6 +159,9 @@ bool llvm::ConstantFoldTerminator(BasicBlock *BB) { bool llvm::isInstructionTriviallyDead(Instruction *I) { if (!I->use_empty() || isa<TerminatorInst>(I)) return false; + // We don't want debug info removed by anything this general. + if (isa<DbgInfoIntrinsic>(I)) return false; + if (!I->mayWriteToMemory()) return true; |
