llvm-6502/lib/Transforms/Vectorize
Arnold Schwaighofer f4775827d0 LoopVectorizer: Perform redundancy elimination on induction variables
When the loop vectorizer was part of the SCC inliner pass manager gvn would
run after the loop vectorizer followed by instcombine. This way redundancy
(multiple uses) were removed and instcombine could perform scalarization on the
induction variables. Having moved the loop vectorizer to later we no longer run
any form of redundancy elimination before we perform instcombine. This caused
vectorized induction variables to survive that did not before.

On a recent iMac this helps linpack back from 6000Mflops to 7000Mflops.

This should also help lpbench and paq8p.

I ran a Release (without Asserts) build over the test-suite and did not see any
negative impact on compile time.

radar://15339680

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193891 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-01 22:18:19 +00:00
..
BBVectorize.cpp Use more type helper functions 2013-10-21 19:43:56 +00:00
CMakeLists.txt SLP Vectorizer: Implement multi-block slp-vectorization. 2013-06-22 21:34:10 +00:00
LLVMBuild.txt
LoopVectorize.cpp LoopVectorizer: Perform redundancy elimination on induction variables 2013-11-01 22:18:19 +00:00
Makefile
SLPVectorizer.cpp ARM cost model: Account for zero cost scalar SROA instructions 2013-10-29 01:33:53 +00:00
Vectorize.cpp This patch breaks up Wrap.h so that it does not have to include all of 2013-05-01 20:59:00 +00:00