llvm-project

History

Andrew Trick c8ac7ea261 SLP vectorizer: Don't hoist vector extracts of phis.

Extracts coming from phis were being hoisted, while all others were
sunk to their uses. This was inconsistent and didn't seem to serve a
purpose. Changing all extracts to be sunk to uses is a prerequisite
for adding block frequency to the SLP vectorizer's cost model.

I benchmarked the change in isolation (without block frequency). I
only saw noise on x86 and some potentially significant improvements on
ARM. No major regressions is good enough for me.

llvm-svn: 204699

2014-03-25 02:18:47 +00:00

BBVectorize.cpp

[C++11] Add range based accessors for the Use-Def chain of a Value.

2014-03-09 03:16:01 +00:00

CMakeLists.txt

SLP Vectorizer: Implement multi-block slp-vectorization.

2013-06-22 21:34:10 +00:00

LLVMBuild.txt

Prune redundant dependencies in LLVMBuild.txt.

2013-12-11 00:30:57 +00:00

LoopVectorize.cpp

[LV] While I'm here, use range based for loops which are so much cleaner