llvm-6502/lib/Transforms
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
..
Hello
InstCombine
Instrumentation remove a bunch of unused private methods 2014-03-23 17:09:26 +00:00
IPO Revert r204076 for now - it caused significant regressions in a number of 2014-03-23 04:22:31 +00:00
ObjCARC
Scalar remove a bunch of unused private methods 2014-03-23 17:09:26 +00:00
Utils Remove LowerInvoke's obsolete "-enable-correct-eh-support" option 2014-03-20 19:54:47 +00:00
Vectorize SLP vectorizer: Don't hoist vector extracts of phis. 2014-03-25 02:18:47 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile