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Author SHA1 Message Date
Philip Reames 2264f96c2a [Tests] Autogen a bunch of Reassociate tests for ease of update 
llvm-svn: 367634
 2019-08-01 23:30:32 +00:00
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
David Majnemer f6e500a0dc [Reassociate] Don't propogate flags when creating negations 
Reassociate mutated existing instructions in order to form negations
which would create additional reassociate opportunities.

This fixes PR23926.

llvm-svn: 240593
 2015-06-24 21:27:36 +00:00
Chad Rosier 094ac7735b [Reassociate] Canonicalize negative constants out of expressions. 
This is a reapplication of r221171, but we only perform the transformation
on expressions which include a multiplication.  We do not transform rem/div
operations as this doesn't appear to be safe in all cases.

llvm-svn: 221721
 2014-11-11 22:58:35 +00:00
Chad Rosier b3eb452e83 [Reassociate] Better preserve NSW/NUW flags. 
Part of PR12985.

Phabricator Revision: http://reviews.llvm.org/D6172

llvm-svn: 221555
 2014-11-07 22:12:57 +00:00