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[AArch64] Revert r216141 for cyclone 

The increase of the interleave factor to 4 has side-effects
like performance losses eg. due to reminder loops being executed
more frequently and may increase code size. It requires more
analysis and careful heuristic tuning. Expect double digit gains
in small benchmarks like lowercase.c and losses in puzzle.c.

llvm-svn: 217540
This commit is contained in:
Gerolf Hoflehner 2014-09-10 20:31:57 +00:00
parent 008e5cdcba
commit 7b0abb89c2
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
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@ -517,7 +517,7 @@ unsigned AArch64TTI::getCostOfKeepingLiveOverCall(ArrayRef<Type*> Tys) const {
}
unsigned AArch64TTI::getMaxInterleaveFactor() const {
if (ST->isCortexA57() || ST->isCyclone())
if (ST->isCortexA57())
return 4;
return 2;
}