llvm-6502/lib/Transforms/Vectorize
Andrew Trick f5bf687cf7 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204699 91177308-0d34-0410-b5e6-96231b3b80d8
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 2014-03-18 22:00:32 +00:00
Makefile
SLPVectorizer.cpp SLP vectorizer: Don't hoist vector extracts of phis. 2014-03-25 02:18:47 +00:00
Vectorize.cpp [cleanup] Move the Dominators.h and Verifier.h headers into the IR 2014-01-13 09:26:24 +00:00