[llvm-commits] [llvm] r107969 - /llvm/trunk/lib/Transforms/Scalar/GVN.cpp
Gabor Greif
ggreif at gmail.com
Fri Jul 9 07:36:49 PDT 2010
Author: ggreif
Date: Fri Jul 9 09:36:49 2010
New Revision: 107969
URL: http://llvm.org/viewvc/llvm-project?rev=107969&view=rev
Log:
cache result of operator*
Modified:
llvm/trunk/lib/Transforms/Scalar/GVN.cpp
Modified: llvm/trunk/lib/Transforms/Scalar/GVN.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/GVN.cpp?rev=107969&r1=107968&r2=107969&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/GVN.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/GVN.cpp Fri Jul 9 09:36:49 2010
@@ -2128,26 +2128,27 @@
for (pred_iterator PI = pred_begin(CurrentBlock),
PE = pred_end(CurrentBlock); PI != PE; ++PI) {
+ BasicBlock *P = *PI;
// We're not interested in PRE where the block is its
// own predecessor, or in blocks with predecessors
// that are not reachable.
- if (*PI == CurrentBlock) {
+ if (P == CurrentBlock) {
NumWithout = 2;
break;
- } else if (!localAvail.count(*PI)) {
+ } else if (!localAvail.count(P)) {
NumWithout = 2;
break;
}
DenseMap<uint32_t, Value*>::iterator predV =
- localAvail[*PI]->table.find(ValNo);
- if (predV == localAvail[*PI]->table.end()) {
- PREPred = *PI;
+ localAvail[P]->table.find(ValNo);
+ if (predV == localAvail[P]->table.end()) {
+ PREPred = P;
++NumWithout;
} else if (predV->second == CurInst) {
NumWithout = 2;
} else {
- predMap[*PI] = predV->second;
+ predMap[P] = predV->second;
++NumWith;
}
}
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