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History

Sanjay Patel 26c81cc870 [GVN] don't propagate equality comparisons of FP zero (PR22376)

In http://reviews.llvm.org/D6911, we allowed GVN to propagate FP equalities
to allow some simple value range optimizations. But that introduced a bug
when comparing to -0.0 or 0.0: these compare equal even though they are not
bitwise identical.

This patch disallows propagating zero constants in equality comparisons. 
Fixes: http://llvm.org/bugs/show_bug.cgi?id=22376

Differential Revision: http://reviews.llvm.org/D7257



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227491 91177308-0d34-0410-b5e6-96231b3b80d8

2015-01-29 20:51:49 +00:00

..

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AddDiscriminators

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

AlignmentFromAssumptions

[AlignmentFromAssumptions] Don't crash just because the target is 32-bit

2014-09-11 08:40:17 +00:00

ArgumentPromotion

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

AtomicExpand/ARM

Use target-dependent emitLeading/TrailingFence instead of the target-independent insertLeading/TrailingFence (in AtomicExpandPass)

2014-09-03 21:01:03 +00:00

This patch teaches IndVarSimplify to add nuw and nsw to certain kinds

2015-01-06 19:02:56 +00:00

Delete -std-compile-opts.

2014-10-16 20:00:02 +00:00

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[GC] CodeGenPrep transform: simplify offsetable relocate

2015-01-14 23:27:07 +00:00

ConstantHoisting

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Fix a bug around truncating vector in const prop.

2014-08-21 02:12:35 +00:00

CorrelatedValuePropagation

LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue()

2014-11-25 17:23:05 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

DeadStoreElimination

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

Commoning of target specific load/store intrinsics in Early CSE.

2015-01-26 22:51:15 +00:00

Normally an 'optnone' function goes through fast-isel, which does not

2014-11-03 18:19:26 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

Change the .ll syntax for comdats and add a syntactic sugar.

2015-01-06 22:55:16 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

[GVN] don't propagate equality comparisons of FP zero (PR22376)

2015-01-29 20:51:49 +00:00

Fix PR22222

2015-01-15 01:46:09 +00:00

DebugInfo: Use distinct inlinedAt MDLocations to avoid separate inlined calls being coalesced

2015-01-21 22:57:29 +00:00

Move EH personality type classification to Analysis/LibCallSemantics.h

2015-01-28 01:17:38 +00:00

Added 5 more tests related to sink store revision 224247

2014-12-17 08:12:59 +00:00

Fold fcmp in cases where value is provably non-negative. By Arch Robison.

2015-01-28 08:03:58 +00:00

Use "weak alias" instead of "alias weak"

2014-07-30 22:51:54 +00:00

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Teach IRCE to look at branch weights when recognizing range checks

2015-01-27 21:38:12 +00:00

ValueTracking: ComputeNumSignBits should tolerate misshapen phi nodes

2015-01-04 07:06:53 +00:00

[LCSSA] Handle PHI insertion in disjoint loops

2014-12-22 22:35:46 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

Use AA in LoadCombine

2014-11-03 23:19:16 +00:00

…

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

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LoopRotate: Don't walk the uses of a Constant

2015-01-27 06:21:43 +00:00

Teach SplitBlockPredecessors how to handle landingpad blocks.

2015-01-28 23:06:47 +00:00

LoopStrengthReduce

[X86] Reduce some 32-bit imuls into lea + shl

2015-01-28 14:08:22 +00:00

Use a smaller pragma unroll threshold to reduce test execution time.

2015-01-21 13:52:02 +00:00

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Fixed a bug in masked load/store in reversed loop.

2015-01-22 08:20:06 +00:00

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LowerExpectIntrinsic

[PM] Port LowerExpectIntrinsic to the new pass manager.

2015-01-24 11:13:02 +00:00

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LowerSwitch: replace unreachable default with popular case destination

2015-01-23 20:43:51 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

Allow call-slop optzn for destinations with a suitable dereferenceable attribute

2014-10-16 19:43:08 +00:00

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

Use "weak alias" instead of "alias weak"

2014-07-30 22:51:54 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

PartiallyInlineLibCalls

PartiallyInlineLibCalls: Check sqrt result type before transforming it.

2014-08-01 23:21:21 +00:00

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…

Fix Reassociate handling of constant in presence of undef float

2015-01-16 03:00:58 +00:00

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IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

SCCP: overdefined calls cannot become constant

2014-11-07 08:54:19 +00:00

SeparateConstOffsetFromGEP/NVPTX

[SeparateConstOffsetFromGEP] Fixed a bug related to unsigned modulo

2014-10-25 18:34:03 +00:00

SimplifyCFG: Omit range checks for switch lookup tables when default is unreachable

2015-01-26 19:52:34 +00:00

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SLPVectorizer: fix wrong scheduling of atomic load/stores.

2015-01-26 09:07:04 +00:00

[SROA] Apply a somewhat heavy and unpleasant hammer to fix PR22093, an

2015-01-05 04:17:53 +00:00

IR: Move MDLocation into place

2015-01-14 22:27:36 +00:00

StructurizeCFG: Use LoopInfo analysis for better loop detection

2014-12-03 04:28:32 +00:00

Fix tail recursion elimination

2014-11-19 13:32:51 +00:00

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[SwitchLowering] Handle destinations on multiple phi instructions

2014-12-02 18:31:53 +00:00