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| author | Bill Wendling <isanbard@gmail.com> | 2011-08-17 20:36:44 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2011-08-17 20:36:44 +0000 |
| commit | c9b2a987a291434490fd5b3b6e98b9992916ece4 (patch) | |
| tree | 8d15e446ffe463064e51ba5b79d7c82ee90434a6 /lib/Analysis/LoopInfo.cpp | |
| parent | 53727fc659af5f8fc51499fd875165533187d734 (diff) | |
| download | llvm-c9b2a987a291434490fd5b3b6e98b9992916ece4.tar.gz llvm-c9b2a987a291434490fd5b3b6e98b9992916ece4.tar.bz2 llvm-c9b2a987a291434490fd5b3b6e98b9992916ece4.tar.xz | |
Revert r137655. There is some question about whether the 'landingpad'
instruction should be marked as potentially reading and/or writing memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137863 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/LoopInfo.cpp')
| -rw-r--r-- | lib/Analysis/LoopInfo.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp index 9a7c50d7fa..36fd598d13 100644 --- a/lib/Analysis/LoopInfo.cpp +++ b/lib/Analysis/LoopInfo.cpp @@ -99,6 +99,9 @@ bool Loop::makeLoopInvariant(Instruction *I, bool &Changed, return false; if (I->mayReadFromMemory()) return false; + // The landingpad instruction is immobile. + if (isa<LandingPadInst>(I)) + return false; // Determine the insertion point, unless one was given. if (!InsertPt) { BasicBlock *Preheader = getLoopPreheader(); |