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authorOwen Anderson <resistor@mac.com>2009-05-29 05:37:54 +0000
committerOwen Anderson <resistor@mac.com>2009-05-29 05:37:54 +0000
commit1c057ee3b353a8c80d7bd9e2d4ea6526d88c7b05 (patch)
tree59e02f796946ed8fd3f45005f5752f8a59b9e465 /lib
parent28a0fc9876b0e562bcadde90fb35660def5e1ab5 (diff)
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Fix an issue where phiMap was not being updated properly when doing load PRE.
Diagnosis and patch thanks to Jakub Staszak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72562 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r--lib/Transforms/Scalar/GVN.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 260bbed..222320f 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1125,6 +1125,11 @@ bool GVN::processNonLocalLoad(LoadInst *LI,
LI->getAlignment(),
UnavailablePred->getTerminator());
+ SmallPtrSet<Instruction*, 4> &p = phiMap[LI->getPointerOperand()];
+ for (SmallPtrSet<Instruction*, 4>::iterator I = p.begin(), E = p.end();
+ I != E; ++I)
+ ValuesPerBlock.push_back(std::make_pair((*I)->getParent(), *I));
+
DenseMap<BasicBlock*, Value*> BlockReplValues;
BlockReplValues.insert(ValuesPerBlock.begin(), ValuesPerBlock.end());
BlockReplValues[UnavailablePred] = NewLoad;