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| author | Philip Reames <listmail@philipreames.com> | 2014-10-21 21:02:19 +0000 |
|---|---|---|
| committer | Philip Reames <listmail@philipreames.com> | 2014-10-21 21:02:19 +0000 |
| commit | d7c21364a92a035e20d89928e2b0ee60e35e64a7 (patch) | |
| tree | d76bf6a4bbb7304334ac3319f82e2c774127ae61 /llvm/lib/Transforms/Utils/Local.cpp | |
| parent | b2d3f035e2ad90890b80cd45348adf4daec20e19 (diff) | |
| download | llvm-d7c21364a92a035e20d89928e2b0ee60e35e64a7.zip llvm-d7c21364a92a035e20d89928e2b0ee60e35e64a7.tar.gz llvm-d7c21364a92a035e20d89928e2b0ee60e35e64a7.tar.bz2 | |
Teach combineMetadata how to merge 'nonnull' metadata.
combineMetadata is used when merging two instructions into one. This change teaches it how to merge 'nonnull' - i.e. only preserve it on the new instruction if it's set on both sources. This isn't actually used yet since I haven't adjusted any of the call sites to pass in nonnull as a 'known metadata'.
llvm-svn: 220325
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/Local.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp index ecbe94a..ef54eb2 100644 --- a/llvm/lib/Transforms/Utils/Local.cpp +++ b/llvm/lib/Transforms/Utils/Local.cpp @@ -1339,6 +1339,10 @@ void llvm::combineMetadata(Instruction *K, const Instruction *J, ArrayRef<unsign // Only set the !invariant.load if it is present in both instructions. K->setMetadata(Kind, JMD); break; + case LLVMContext::MD_nonnull: + // Only set the !nonnull if it is present in both instructions. + K->setMetadata(Kind, JMD); + break; } } } |