Nick Lewycky 1b344bc986 Xor'ing both sides of icmp by sign-bit is equivalent to swapping signedness of ...

the predicate.

Also, make this optz'n apply in more cases where it's safe to do so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54876 91177308-0d34-0410-b5e6-96231b3b80d8

2008-08-17 07:34:14 +00:00

..

ADCE.cpp

Remove the ability for ADCE to remove unreachable blocks in loop nests, because, as Eli pointed out, SimplifyCFG already does this.

2008-07-03 17:21:41 +00:00

BasicBlockPlacement.cpp

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CodeGenPrepare.cpp

Rename SDOperand to SDValue.

2008-07-27 21:46:04 +00:00

CondPropagate.cpp

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ConstantProp.cpp

Fix comment typos.

2008-08-01 12:23:49 +00:00

DCE.cpp

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DeadStoreElimination.cpp

Don't remove volatile loads. Thanks to Duncan for noticing this one.

2008-07-28 20:52:42 +00:00

GVN.cpp

Supress a gcc-4.3 warning.

2008-07-18 21:06:02 +00:00

GVNPRE.cpp

Update comments and documentation to reflect that GCSE and ValueNumbering are

2008-06-05 07:55:49 +00:00

IndVarSimplify.cpp

Pass the computed iteration count value to RewriteLoopExitValues

2008-08-05 22:34:21 +00:00

InstructionCombining.cpp

Xor'ing both sides of icmp by sign-bit is equivalent to swapping signedness of

2008-08-17 07:34:14 +00:00

JumpThreading.cpp

Enable first-class aggregates support.

2008-07-23 00:34:11 +00:00

LICM.cpp

Put the LICM of constant GlobalVariables, introduced in r53945, under a

2008-07-24 23:57:25 +00:00

LoopDeletion.cpp

Use use_empty() instead of getNumUses(), avoiding a use list traversal.

2008-06-23 23:23:49 +00:00

LoopIndexSplit.cpp

Use empty() instead of begin() == end().

2008-08-14 18:13:49 +00:00

LoopRotation.cpp

Enable first-class aggregates support.

2008-07-23 00:34:11 +00:00

LoopStrengthReduce.cpp

Reapply 54786. Add overflow and number of mantissa bits checks.

2008-08-15 21:21:34 +00:00

LoopUnroll.cpp

Add -unroll-allow-partial command line option that enabled the loop unroller to

2008-07-29 13:21:23 +00:00

LoopUnswitch.cpp

Do not try to update dominator info while manipulating CFG. This code does not handle all cases and keeps invalid dom info around some cases, which misleads other passes down stream.

2008-07-03 17:37:52 +00:00

Makefile

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MemCpyOptimizer.cpp

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PredicateSimplifier.cpp

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Reassociate.cpp

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Reg2Mem.cpp

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Scalar.cpp

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ScalarReplAggregates.cpp

minor tidying of comments.

2008-06-23 17:11:23 +00:00

SCCP.cpp

Temporarily revert r54792. It's causing an ICE during bootstrapping.

2008-08-14 23:05:24 +00:00

SimplifyCFGPass.cpp

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SimplifyLibCalls.cpp

Have IRBuilder take a template argument on whether or not to preserve

2008-08-08 19:39:37 +00:00

TailDuplication.cpp

Revert 52223.

2008-06-12 20:55:39 +00:00

TailRecursionElimination.cpp

Fix a case where tailcallelim wouldn't set the changed bit when it made a change.

2008-06-14 00:49:48 +00:00