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Commits on May 9, 2013

• Teach SelectionDAG to constant fold all-constant FMA nodes the same way that it constant folds FADD, FMUL, etc.

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Commits on Apr 23, 2013

• DAGCombine should not aggressively fold SEXT(VSETCC(...)) into a wider VSETCC without first checking the target's vector boolean contents.

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Commits on Mar 23, 2013

• Remove the type legality check from the SelectionDAGBuilder when it lowers @llvm.fmuladd to ISD::FMA nodes.

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Commits on Feb 14, 2013

• Add some legality checks for SETCC before introducing it in the DAG combiner post-operand legalization.

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Commits on Feb 7, 2013

• Remove this testcase until I can figure out how to properly conditionalize it.

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• Another attempt at getting the XFAIL line right for this test.

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• Fix CMake detection of various cmath functions, and XFAIL the test on platforms that are known to be missing them.

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• Conditionalize constant folding of math intrinsics on the availability of an implementation on the host. This is a little bit unfortunate, but until someone decides to implement a full libm for APF…

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Commits on Feb 6, 2013

• Signficantly generalize our ability to constant fold floating point intrinsics, including ones on half types.

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Commits on Feb 5, 2013

• Reapply r174343, with a fix for a scary DAG combine bug where it failed to differentiate between the alignment of the

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• When the target-independent DAGCombiner inferred a higher alignment for a load,

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Commits on Jan 10, 2013

• Teach InstCombine to hoist FABS and FNEG through FPTRUNC instructions. The application of these operations commutes with the truncation, so we should prefer to do them in the smallest size we can, …

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Commits on Nov 27, 2012

• Revert r168635 "Step towards implementation of pass manager with doInitialization and doFinalization per module detangled from runOn?? calls, still has temporary code not to break ASAN to be remove…

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Commits on Nov 26, 2012

• Step towards implementation of pass manager with doInitialization and doFinalization per module detangled from runOn?? calls, still has temporary code not to break ASAN to be removed when that pass…

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Commits on Nov 15, 2012

• Claim ownership of everyone's favorite part of the backend.

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• Add doInitialization and doFinalization methods to ModulePass's, to allow them to be re-initialized and reused on multiple Module's.

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Commits on Nov 3, 2012

• Be careful not to optimize a SELECT_CC into a SETCC post-legalization if the SETCC node would be illegal.

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Commits on Nov 1, 2012

• Add a few more simple fast-math constant propagations and cancellations.

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Commits on Oct 16, 2012

• Speculative fix the mask constants to be of type uintptr_t. I don't know of any case where the old form was incorrect, but I'm more confident that such cases don't exist in this version.

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• Fix a bug in the set(I,E)/reset(I,E) methods that I recently added. The boundary condition for checking if I and E were in the same word were incorrect, and, beyond that, the mask computation was n…

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Commits on Oct 15, 2012

• Add range-based set()/reset() to BitVector. These allow fast setting/resetting of ranges of bits, particularly useful when dealing with very large BitVector's.

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Commits on Sep 19, 2012

• Soften the pattern-can-never-match error in TableGen into a warning. This pattern can be very useful in cases where you want to define a multiclass that covers both commutative and non-commutative …

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• Implement a correct copy constructor for Record. Now that we're using the ID number as a key in maps (for determinism), it is imperative that ID numbers be globally unique, even when we copy constr…

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Commits on Sep 12, 2012

• Remove an overly-aggressive assertion. The code following this assertion already knows how to handle the case where DstRC was NULL, so it's not actually protecting us from anything, and this patter…

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Commits on Sep 11, 2012

• Improve tblgen code cleanliness: create an unknown_class, from which the unknown def inherits. Make tblgen check for that class, rather than checking for the def itself.

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• Compute a map from register names to registers, rather than scanning the list of registers every time we want to look up a register by name.

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Commits on Sep 1, 2012

• Teach DAG combine a number of tricks to simplify FMA expressions in fast-math mode.

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Commits on Aug 30, 2012

• Try to make this test more generic to unbreak buildbots.

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• Teach the DAG combiner to turn chains of FADDs (x+x+x+x+...) into FMULs by constants. This is only enabled in unsafe FP math mode, since it does not preserve rounding effects for all such constants.

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Commits on Aug 29, 2012

• Allow targets to specify a minimum supported NOP size when performing NOP padding. If the desired padding is smaller than the supported NOP size,

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Commits on Aug 15, 2012

• Fix another roundToIntegral bug where very large values could become infinity. Problem and solution identified by Steve Canon.

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• Fix typo in comment.

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• Fix a problem with APFloat::roundToIntegral where it would return incorrect results for negative inputs to trunc. Add unit tests to verify this behavior.

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Commits on Aug 14, 2012

• Fix the construction of the magic constant for roundToIntegral to be 64-bit safe. Fixes c-torture/execute/990826-0.c

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Commits on Aug 13, 2012

• Add a roundToIntegral method to APFloat, which can be parameterized over various rounding modes. Use this to implement SelectionDAG constant folding of FFLOOR, FCEIL, and FTRUNC.

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