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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 | 4bb1f4ad88bdf4c47e72b68f51d7da30e25296a0 (patch) | |
| tree | e4d6fe2be0f6913dff617a39a10cef6ca311218a /lib/Transforms/Utils/Local.cpp | |
| parent | 605879dd16294748fba6edf4e17da9bf4ddfa433 (diff) | |
| download | external_llvm-4bb1f4ad88bdf4c47e72b68f51d7da30e25296a0.zip external_llvm-4bb1f4ad88bdf4c47e72b68f51d7da30e25296a0.tar.gz external_llvm-4bb1f4ad88bdf4c47e72b68f51d7da30e25296a0.tar.bz2 | |
Marking debug info intrinsics as not touching memory
caused them to be considered trivially dead. Fix this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65979 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | lib/Transforms/Utils/Local.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index 38809e5..d2cbec0 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/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; |