Commit Graph

8 Commits

Author SHA1 Message Date
Elena Demikhovsky a5599bfd72 Sink store based on alias analysis
- by Ella Bolshinsky
The alias analysis is used define whether the given instruction
is a barrier for store sinking. For 2 identical stores, following
instructions are checked in the both basic blocks, to determine
whether they are sinking barriers.

http://reviews.llvm.org/D6420

llvm-svn: 224247
2014-12-15 14:09:53 +00:00
Elena Demikhovsky 27152aea88 Use Alias Analysis to hoist 2 loads from diamond to the common predecessor basic block.
Alias Analysis allows to detect real barriers for load hoisting.

Review in http://reviews.llvm.org/D5991

llvm-svn: 221091
2014-11-02 08:03:05 +00:00
Gerolf Hoflehner 24815d9b8f [MergedLoadStoreMotion] Move pass enabling option to PassManagerBuilder
llvm-svn: 217538
2014-09-10 19:55:29 +00:00
Gerolf Hoflehner e4f6684d1b Removed misleading comment.
llvm-svn: 217527
2014-09-10 17:54:50 +00:00
Gerolf Hoflehner ea96a3d336 Fix for multi-line comment warning
llvm-svn: 215169
2014-08-07 23:19:55 +00:00
Gerolf Hoflehner ae1ec299df Fix for regression: [Bug 20369] wrong code at -O3 on x86_64-linux-gnu in 64-bit mode
Prevents hoisting of loads above stores and sinking of stores below loads
in MergedLoadStoreMotion.cpp (rdar://15991737)

llvm-svn: 213497
2014-07-21 03:02:46 +00:00
NAKAMURA Takumi ab184fb88d MergedLoadStoreMotion.cpp: Fix msc17 build. Member initializer is unavailable.
llvm-svn: 213448
2014-07-19 03:29:25 +00:00
Gerolf Hoflehner f27ae6cdcf MergedLoadStoreMotion pass
Merges equivalent loads on both sides of a hammock/diamond
and hoists into into the header.
Merges equivalent stores on both sides of a hammock/diamond
and sinks it to the footer.
Can enable if conversion and tolerate better load misses
and store operand latencies.

llvm-svn: 213396
2014-07-18 19:13:09 +00:00