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6502/llvm-6502

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History

Duncan Sands b2f3c383ec For completeness, generalize the (X + Y) - Y -> X transform and add X - (X + 1) -> -1.

These were not recommended by my auto-simplifier since they don't fire often enough.
However they do fire from time to time, for example they remove one subtraction from
the final bitcode for 483.xalancbmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123755 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-18 11:50:19 +00:00

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ArgumentPromotion

fix PR8932, a case where arg promotion could infinitely promote.

2011-01-16 08:09:24 +00:00

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temporarily revert r123526. While working on a follow-on patch I

2011-01-15 07:51:19 +00:00

Don't merge two constants if we care about the address of both.

2011-01-16 17:05:09 +00:00

Teach constant folding to perform conversions from constant floating

2011-01-11 01:07:24 +00:00

CorrelatedValuePropagation

Test for lazy value info's ability to prove the absense of NULLs in pointers.

2011-01-16 21:57:20 +00:00

Teach DAE to look for functions whose arguments are unused, and change all callers to pass in an undefvalue instead.

2011-01-16 21:25:33 +00:00

DeadStoreElimination

Fix PR8728, a miscompilation I recently introduced. When optimizing

2010-12-06 01:48:06 +00:00

Duncan deftly points out that readnone functions aren't

2011-01-03 23:38:13 +00:00

Make ModRefBehavior a lattice. Use this to clean up AliasAnalysis

2010-11-10 01:02:18 +00:00

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Reduce and merge testcases.

2011-01-16 09:13:31 +00:00

Give GVN back the ability to perform simple conditional propagation on conditional branch values.

2010-12-21 23:54:34 +00:00

Remove LoopIndexSplit pass. It is neither maintained nor used by anyone.

2010-10-07 23:29:37 +00:00

relax testcase a bit.

2011-01-14 07:46:33 +00:00

enhance FoldOpIntoPhi in instcombine to try harder when a phi has

2011-01-16 05:28:59 +00:00

For completeness, generalize the (X + Y) - Y -> X transform and add X - (X + 1) -> -1.

2011-01-18 11:50:19 +00:00

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more test cleanup

2010-09-02 22:38:56 +00:00

Teach jump threading to "look through" a select when the branch direction of a terminator depends on it.

2010-12-15 09:51:20 +00:00

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Enhance LICM to promote alias sets whose pointers themselves are stored,

2010-12-19 05:57:25 +00:00

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Teach loop-idiom to turn a loop containing a memset into a larger memset

2011-01-04 07:46:33 +00:00

merge tests into one crash.ll test.

2011-01-11 07:50:07 +00:00

Fix PR8702 by not having LoopSimplify claim to preserve LCSSA form. As described

2011-01-02 13:38:21 +00:00

LoopStrengthReduce

Correct bogus module triple specifications.

2010-08-30 10:48:29 +00:00

Revert r113439, which relaxed the requirement that loops containing calls cannot be unrolled. After some discussion,

2010-09-09 20:02:23 +00:00

Factor code for testing whether replacing one value with another

2010-11-18 19:59:41 +00:00

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revert 123144, reenabling the rest of memset formation.

2011-01-12 03:25:15 +00:00

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if an alloca is only ever accessed as a unit, and is accessed with load/store instructions,

2011-01-16 06:18:28 +00:00

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SimplifyCFG: Ranges can be larger than 64 bits. Fixes Release-selfhost build.

2010-12-17 10:48:14 +00:00

SimplifyLibCalls

Revert r64460. strtol and friends cannot be marked readonly, even with

2010-12-17 01:09:43 +00:00

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

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merge two tests.

2010-08-31 18:44:03 +00:00

The output of opt -stats must be sent to stderr. Patch by NAKAMURA Takumi!

2010-09-01 18:32:56 +00:00