diff options
| author | Owen Anderson <resistor@mac.com> | 2007-07-30 17:29:24 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2007-07-30 17:29:24 +0000 |
| commit | 45c8388e2a94502ded17dc493fe3fb10b04ce439 (patch) | |
| tree | 98ebecfe5db2b291532428176c7dcc5102e0bac2 | |
| parent | 4f9ba7c40c41cae3d9730c5416a2750dea4f0ff4 (diff) | |
Use more caching when computing non-local dependence. This makes bzip2 not
use up the entire 32-bit address space.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40596 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Analysis/MemoryDependenceAnalysis.cpp | 2 | ||||
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp index 4bd877142a..02b0af6f0f 100644 --- a/lib/Analysis/MemoryDependenceAnalysis.cpp +++ b/lib/Analysis/MemoryDependenceAnalysis.cpp @@ -129,6 +129,8 @@ bool MemoryDependenceAnalysis::nonLocalHelper(Instruction* query, if (!inserted && !predOnStack) resp.insert(std::make_pair(block, None)); + else if (inserted && predOnStack) + resp.insert(std::make_pair(block, NonLocal)); return inserted; } diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index ab6c913605..fee0eedcc7 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -752,7 +752,9 @@ bool GVN::processNonLocalLoad(LoadInst* L, SmallVector<Instruction*, 4>& toErase I != E; ++I) if (I->second == MemoryDependenceAnalysis::None) { return false; - } else if (StoreInst* S = dyn_cast<StoreInst>(I->second)) { + } else if (I->second == MemoryDependenceAnalysis::NonLocal) { + continue; + }else if (StoreInst* S = dyn_cast<StoreInst>(I->second)) { if (S->getPointerOperand() == L->getPointerOperand()) repl.insert(std::make_pair(I->first, S->getOperand(0))); else |