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Commits on Dec 13, 2012

• Remove two popcount patterns which we are already able to recognize.

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  Shuxin Yang

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Commits on Oct 8, 2012

• Move TargetData to DataLayout.

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  mvillmow

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Commits on Aug 19, 2012

• Fabs folding is implemented.

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  d0k

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Commits on Jul 23, 2012

• Test revert of test changes.

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  mvillmow

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• Test commit.

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  mvillmow

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Commits on Jun 23, 2012

• Add a microoptimization note.

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  d0k

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Commits on Apr 12, 2012

• Remove README entry obsoleted by register masks.

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  d0k

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Commits on Mar 28, 2012

• Add another note about a missed compare with nsw arithmetic instcombine.

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  d0k

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Commits on Mar 27, 2012

• Add a note about a cute little fabs optimization.

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  d0k

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• Add two missed instcombines related to compares with nsw arithmetic.

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  d0k

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Commits on Sep 7, 2011

• Add two notes for correlated-expression optimizations.

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  d0k

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Commits on Jul 14, 2011

• Don't emit a bit test if there is only one case the test can yield false. A simple SETNE is sufficient.

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  d0k

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Commits on Jun 13, 2011

• InstCombine: Fold A-b == C --> b == A-C if A and C are constants.

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  d0k

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Commits on May 23, 2011

• clarify this, apparently it is confusing :)

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  lattner

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Commits on May 22, 2011

• add a note.

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  lattner

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• move PR9408 here.

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  lattner

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Commits on Apr 26, 2011

• Transform: "icmp eq (trunc (lshr(X, cst1)), cst" to "icmp (and X, mask), cst"

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  lattner

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Commits on Apr 25, 2011

• add a missed bitfield instcombine.

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  lattner

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Commits on Apr 22, 2011

• DAGCombine: fold "(zext x) == C" into "x == (trunc C)" if the trunc is lossless.

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  d0k

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Commits on Apr 14, 2011

• add a minor missed dag combine that is blocking mid-level optimization

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  lattner

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Commits on Mar 25, 2011

• Add a note.

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  d0k

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Commits on Mar 22, 2011

• A bit more analysis of a memset-related README entry.

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  eefriedman

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Commits on Mar 21, 2011

• This README entry was fixed recently.

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  eefriedman

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Commits on Mar 1, 2011

• add a note

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  lattner

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Commits on Feb 26, 2011

• Add some DAGCombines for (adde 0, 0, glue), which are useful to optimize legalized code for large integer arithmetic.

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  d0k

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Commits on Feb 21, 2011

• add a missed loop deletion case.

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  lattner

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• add an idiom that loop idiom could theoretically catch.

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  lattner

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Commits on Feb 17, 2011

• This has been implemented.

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  CunningBaldrick

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• add some notes on compares + binops. Remove redundant entries.

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  lattner

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Commits on Feb 16, 2011

• Add a few missed xforms from GCC PR14753

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  lattner

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• Remove outdated README entry.

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  eefriedman

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• Remove outdated README entry.

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  eefriedman

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• Update README entry.

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  eefriedman

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Commits on Feb 6, 2011

• Remove a virtual inheritance case that clang can devirtualize fully now.

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  Anders Carlsson

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Commits on Feb 2, 2011

• SimplifyCFG: Turn switches into sub+icmp+branch if possible.

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