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AgeCommit message (Expand)Author
2012-03-28Revert r153521 as it's causing large regressions on the nightly testers.Chad Rosier
2012-03-27Reapply r153423; the original commit was fine. The failing test, distray, had Chad Rosier
2012-03-26Revert r153423 as this is causing failures on our internal nightly testers.Chad Rosier
2012-03-26Use the new range metadata in computeMaskedBits and add a new optimization toRafael Espindola
2012-03-25Teach instsimplify how to simplify comparisons of pointers which areChandler Carruth
2012-03-25Switch the pointer-difference simplification logic to only work withChandler Carruth
2012-03-13Generalize the "trunc(ptrtoint(x)) - trunc(ptrtoint(y)) ->Duncan Sands
2012-03-12Teach instsimplify how to constant fold pointer differences.Chandler Carruth
2012-03-05Make sure we don't return bits outside the mask in ComputeMaskedBits. PR12189.Eli Friedman
2012-02-26Reinstate the optimization from r151449 with a fix to not turn 'gep %x' intoNick Lewycky
2012-02-25Roll these back to r151448 until I figure out how they're breakingNick Lewycky
2012-02-25An argument and a local identified object (eg. a noalias call) could turn outNick Lewycky
2012-02-25Teach instsimplify to be more aggressive when analyzing comparisons of pointersNick Lewycky
2012-02-24fix PR12075, a regression in a recent transform I added. In unreachable code...Chris Lattner
2012-02-20fold comparisons of gep'd alloca points with null to false,Chris Lattner
2012-02-18Fix a rather nasty regression from r150690: LHS != RHS does not imply LHS->st...Eli Friedman
2012-02-16InstSimplify: Ignore pointer casts when constant folding compares between poi...Benjamin Kramer
2012-02-16Replace all instances of dg.exp file with lit.local.cfg, since all tests are ...Eli Bendersky
2012-02-10Fix PR11948: the result type of an icmp may be a vector of boolean -Duncan Sands
2012-02-10Revert commit 149912 (lattner) and add a testcase that shows the problem (whichDuncan Sands
2011-12-05Add support for vectors of pointers.Nadav Rotem
2011-11-23Fix a crash in which a multiplication was being reported as being both negativeDuncan Sands
2011-11-08Fix code to match comment. Fixes PR11340, a regression from r143209.Eli Friedman
2011-11-04Add tests for existing InstSimplify features.Dan Gohman
2011-11-04Teach instsimplify to simplify calls to undef.Dan Gohman
2011-10-30Reapply commit 143214 with a fix: m_ICmp doesn't match conditionsDuncan Sands
2011-10-29Revert r143214; it's breaking a bunch of stuff.Eli Friedman
2011-10-28The expression icmp eq (select (icmp eq x, 0), 1, x), 0 folds to false.Duncan Sands
2011-10-28A shift of a power of two is a power of two or zero.Duncan Sands
2011-10-28Fold icmp ugt (udiv X, Y), X to false. Spotted by my super-optimizerDuncan Sands
2011-10-27Reapply commit 143028 with a fix: the problem was casting a ConstantExpr MulDuncan Sands
2011-10-27Revert Duncan's r143028 expression folding which appears to be the culpritBob Wilson
2011-10-26The maximum power of 2 dividing a power of 2 is itself. This occursDuncan Sands
2011-10-26My super-optimizer noticed that we weren't folding this expression toDuncan Sands
2011-09-05InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the ...Benjamin Kramer
2011-09-05Add some simple insertvalue simplifications, for the purpose of cleaningDuncan Sands
2011-07-19Remove bogus test: for all possible inputs of %X, the 'sub nsw' is guaranteedNick Lewycky
2011-07-01Improve constant folding of undef for cmp and select operators.Dan Gohman
2011-07-01Improve constant folding of undef for binary operators.Dan Gohman
2011-05-07The comparision "max(x,y)==x" is equivalent to "x>=y". Since the max isDuncan Sands
2011-05-04Add variations on: max(x,y) >= min(x,z) folds to true. This isn't that common,Duncan Sands
2011-05-03Implement some basic simplifications involving min/max, for exampleDuncan Sands
2011-05-02Move some rem transforms out of instcombine and into instsimplify.Duncan Sands
2011-03-12Teach ComputeMaskedBits about sub nsw.Benjamin Kramer
2011-03-11Teach ComputeMaskedBits about nsw on add. I don't think there's anything we canNick Lewycky
2011-03-09Fix mistyped CHECK lines.Benjamin Kramer
2011-03-09Add another micro-optimization. Apologies for the lack of refactoring, but INick Lewycky
2011-03-05Thread comparisons over udiv/sdiv/ashr/lshr exact and lshr nuw/nsw wheneverNick Lewycky
2011-03-04Revert broken srem logic from r126991.Nick Lewycky
2011-03-04Fold "icmp pred (srem X, Y), Y" like we do for urem. Handle signed comparisonsNick Lewycky