Sanjay Patel a06d989552 [ValueTracking] improve ComputeNumSignBits for vector constants ...

This is similar to the computeKnownBits improvement in rL268479. 
There's probably more we can do for vector logic instructions, but 
this should let us see non-splat constant masking ops that can
become vector selects instead of and/andn/or sequences.

Differential Revision: http://reviews.llvm.org/D21610

llvm-svn: 273459

2016-06-22 19:20:59 +00:00

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2010-12-20-Boolean.ll

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2011-01-14-Thread.ll

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2011-02-01-Vector.ll

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2011-09-05-InsertExtractValue.ll

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2011-10-27-BinOpCrash.ll

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2011-11-23-MaskedBitsCrash.ll

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2013-04-19-ConstantFoldingCrash.ll

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add-mask.ll

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AndOrXor.ll

[InstSimplify] analyze (optionally casted) icmps to eliminate obviously false logic (PR27869)

2016-06-20 20:59:59 +00:00

apint-or.ll

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assume.ll

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bswap.ll

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call-callconv.ll

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call.ll

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compare.ll

Add optimization for 'icmp slt (or A, B), A' and some related idioms based on knowledge of the sign bit for A and B.

2016-04-21 00:53:14 +00:00

dead-code-removal.ll

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exact-nsw-nuw.ll

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fast-math.ll

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fdiv.ll

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floating-point-arithmetic.ll

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floating-point-compare.ll

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fold-builtin-fma.ll

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gep.ll

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implies.ll

[ValueTracking] Correct lit test comments. NFC.

2016-04-18 19:11:45 +00:00

load-relative-32.ll

Introduce llvm.load.relative intrinsic.

2016-04-22 21:18:02 +00:00

load-relative.ll

Introduce llvm.load.relative intrinsic.

2016-04-22 21:18:02 +00:00

load.ll

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maxmin.ll

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noalias-ptr.ll

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past-the-end.ll

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phi.ll

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ptr_diff.ll

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reassociate.ll

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rem.ll

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select.ll

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shift-128-kb.ll

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shift-knownbits.ll

[InstSimplify] use computeKnownBits on shift amount operands

2016-05-10 20:46:54 +00:00

shr-nop.ll

[ValueTracking] improve ComputeNumSignBits for vector constants

2016-06-22 19:20:59 +00:00

undef.ll

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vec-cmp.ll

[ValueTracking, InstSimplify] extend isKnownNonZero() to handle vector constants

2016-05-24 14:18:49 +00:00

vector_gep.ll

Vector GEP - fixed a crash on InstSimplify Pass.

2016-05-15 12:30:25 +00:00

vector_ptr_bitcast.ll

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