Changes in directory llvm/lib/Transforms/Scalar:
GVNPRE.cpp updated: 1.47 -> 1.48
---
Log message:
Eliminate a redundant check. This speeds up optimization of 253.perlbmk from
13.5 seconds to 10.9 seconds.
---
Diffs of the changes: (+3 -7)
GVNPRE.cpp | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
Index: llvm/lib/Transforms/Scalar/GVNPRE.cpp
diff -u llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.47
llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.48
--- llvm/lib/Transforms/Scalar/GVNPRE.cpp:1.47 Wed Jun 20 19:19:05 2007
+++ llvm/lib/Transforms/Scalar/GVNPRE.cpp Wed Jun 20 20:59:05 2007
@@ -887,13 +887,9 @@
// However, for opaques, such as constants within PHI nodes, it is
// possible that they have not yet received a number. Make sure they do
// so now.
- uint32_t valNum = 0;
- if (isa<BinaryOperator>(*I) || isa<CmpInst>(*I))
- valNum = VN.lookup(*I);
- else
- valNum = VN.lookup_or_add(*I);
- if (find_leader(anticIn, valNum) == 0)
- val_insert(anticIn, *I);
+ if (!isa<BinaryOperator>(*I) && !isa<CmpInst>(*I))
+ VN.lookup_or_add(*I);
+ val_insert(anticIn, *I);
}
clean(anticIn);
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