Changes in directory llvm/lib/Transforms/Scalar:
LoopStrengthReduce.cpp updated: 1.124 -> 1.125
---
Log message:
allow -1 strides to reuse "1" strides.
---
Diffs of the changes: (+2 -1)
LoopStrengthReduce.cpp | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
diff -u llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.124
llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.125
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.124 Mon Apr 2
01:34:44 2007
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp Mon Apr 2 17:51:58 2007
@@ -929,7 +929,8 @@
for (std::map<SCEVHandle, IVsOfOneStride>::iterator SI=
IVsByStride.begin(),
SE = IVsByStride.end(); SI != SE; ++SI) {
int64_t SSInt =
cast<SCEVConstant>(SI->first)->getValue()->getSExtValue();
- if (unsigned(abs(SInt)) < SSInt || (SInt % SSInt) != 0)
+ if (SInt != -SSInt &&
+ (unsigned(abs(SInt)) < SSInt || (SInt % SSInt) != 0))
continue;
int64_t Scale = SInt / SSInt;
// Check that this stride is valid for all the types used for loads and
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