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| author | Daniel Berlin <dberlin@dberlin.org> | 2016-02-07 01:52:15 +0000 |
|---|---|---|
| committer | Daniel Berlin <dberlin@dberlin.org> | 2016-02-07 01:52:15 +0000 |
| commit | 7898ca658eadb85e5aa1bb15c11703caed53dcf0 (patch) | |
| tree | 12e8038509d4d51c56e0efcf2d5874890c4ec555 /llvm/lib/Transforms/Utils/MemorySSA.cpp | |
| parent | 1b2e4ffa581decb6c3f06781c629343e718c3d59 (diff) | |
| download | bcm5719-llvm-7898ca658eadb85e5aa1bb15c11703caed53dcf0.tar.gz bcm5719-llvm-7898ca658eadb85e5aa1bb15c11703caed53dcf0.zip | |
Only insert into definingblocks once per block
llvm-svn: 260013
Diffstat (limited to 'llvm/lib/Transforms/Utils/MemorySSA.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/MemorySSA.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/MemorySSA.cpp b/llvm/lib/Transforms/Utils/MemorySSA.cpp index 382a18b025a..81c8737645b 100644 --- a/llvm/lib/Transforms/Utils/MemorySSA.cpp +++ b/llvm/lib/Transforms/Utils/MemorySSA.cpp @@ -253,17 +253,20 @@ MemorySSAWalker *MemorySSA::buildMemorySSA(AliasAnalysis *AA, // Go through each block, figure out where defs occur, and chain together all // the accesses. for (BasicBlock &B : F) { + bool InsertIntoDef = false; AccessListType *Accesses = nullptr; for (Instruction &I : B) { MemoryAccess *MA = createNewAccess(&I, true); if (!MA) continue; if (isa<MemoryDef>(MA)) - DefiningBlocks.insert(&B); + InsertIntoDef = true; if (!Accesses) Accesses = getOrCreateAccessList(&B); Accesses->push_back(MA); } + if (InsertIntoDef) + DefiningBlocks.insert(&B); } // Determine where our MemoryPhi's should go |
