Shuxin Yang 2d10010649 Implement XOR reassociation. It is based on following rules: ... rule 1: (x | c1) ^ c2 => (x & ~c1) ^ (c1^c2), only useful when c1=c2 rule 2: (x & c1) ^ (x & c2) = (x & (c1^c2)) rule 3: (x | c1) ^ (x | c2) = (x & c3) ^ c3 where c3 = c1 ^ c2 rule 4: (x | c1) ^ (x & c2) => (x & c3) ^ c1, where c3 = ~c1 ^ c2 It reduces an application's size (in terms of # of instructions) by 8.9%. Reviwed by Pete Cooper. Thanks a lot! rdar://13212115 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178409 91177308-0d34-0410-b5e6-96231b3b80d8		2013-03-30 02:15:01 +00:00
..
2002-05-15-AgressiveSubMove.ll
2002-05-15-MissedTree.ll
2002-05-15-SubReassociate2.ll
2002-05-15-SubReassociate.ll
2002-07-09-DominanceProblem.ll
2003-08-12-InfiniteLoop.ll
2005-09-01-ArrayOutOfBounds.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2006-04-27-ReassociateVector.ll
2011-01-26-UseAfterFree.ll
2012-05-08-UndefLeak.ll	Stop reassociate from looking through expressions of arbitrary complexity. This	2012-07-26 09:26:40 +00:00
2012-06-08-InfiniteLoop.ll	Revert commit 158073 while waiting for a fix. The issue is that reassociate	2012-06-08 13:37:30 +00:00
absorption.ll	It is possible for several constants which aren't individually absorbing to	2012-06-13 12:15:56 +00:00
basictest.ll
crash.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 02:33:22 +00:00
fp-commute.ll	Grab-bag of reassociate tweaks. Unify handling of dead instructions and	2012-06-06 14:53:10 +00:00
inverses.ll
lit.local.cfg	Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.	2012-02-16 06:28:33 +00:00
looptest.ll
mightymul.ll	Stop reassociate from looking through expressions of arbitrary complexity. This	2012-07-26 09:26:40 +00:00
mulfactor.ll	Teach the reassociate pass to fold chains of multiplies with repeated	2012-04-26 05:30:30 +00:00
multistep.ll	revert r167740	2012-11-13 00:08:49 +00:00
negation.ll
no-op.ll	Since commit 157467, if reassociate isn't actually going to change an expression	2012-05-26 16:42:52 +00:00
optional-flags.ll
otherops.ll
pr12245.ll	The value held in the vector may be RAUW'ed by some of the canonicalization	2012-05-02 09:59:45 +00:00
repeats.ll	Now that Reassociate's LinearizeExprTree can look through arbitrary expression	2012-06-12 14:33:56 +00:00
secondary.ll
shift-factor.ll
shifttest.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
subtest2.ll
subtest.ll
xor_reassoc.ll	Implement XOR reassociation. It is based on following rules:	2013-03-30 02:15:01 +00:00