Eli Friedman
28f3ff0d3d
Minor simplification: use ShuffleVectorInst::getMaskValue instead of a more expensive helper.
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llvm-svn: 142672
2011-10-21 19:11:34 +00:00
Eli Friedman
fb0b9216e1
Extend instcombine's shufflevector simplification to handle more cases where the input and output vectors have different sizes. Patch by Xiaoyi Guo.
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llvm-svn: 142671
2011-10-21 19:06:29 +00:00
Chris Lattner
e1fe7061ce
land David Blaikie's patch to de-constify Type, with a few tweaks.
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llvm-svn: 135375
2011-07-18 04:54:35 +00:00
Nadav Rotem
897b838d5f
Instcombile optimization: extractelement(cast) -> cast(extractelement)
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llvm-svn: 128683
2011-03-31 22:57:29 +00:00
Eli Friedman
35ed1e5d6c
PR9218: SimplifyDemandedVectorElts can return a non-null value that is not
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the instruction passed in. Make sure to account for this correctly, instead
of looping infinitely.
llvm-svn: 126058
2011-02-19 22:42:40 +00:00
Jay Foad
789e8ac4f7
PR5207: Rename overloaded APInt methods set(), clear(), flip() to
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setAllBits(), setBit(unsigned), etc.
llvm-svn: 120564
2010-12-01 08:53:58 +00:00
Bob Wilson
d84c4629c1
Clean up indentation and other whitespace.
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llvm-svn: 117728
2010-10-29 22:20:45 +00:00
Bob Wilson
9297637759
Remove trailing whitespace.
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llvm-svn: 117727
2010-10-29 22:20:43 +00:00
Bob Wilson
59dedc2629
Fix 80-column violation.
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llvm-svn: 117722
2010-10-29 22:03:07 +00:00
Bob Wilson
d7f24e831f
Change instcombine's getShuffleMask to represent undef with negative values.
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This code had previously used 2*N, where N is the mask length, to represent
undef. That is not safe because the shufflevector operands may have more
than N elements -- they don't have to match the result type.
llvm-svn: 117721
2010-10-29 22:03:05 +00:00
Bob Wilson
996353fb5d
Make instcombine a little more aggressive in combining vector shuffles.
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Allow splats even if they don't match either of the original shuffles,
possibly due to undef entries in the shuffles masks. Radar 8597790.
Also fix some 80-column violations.
llvm-svn: 117719
2010-10-29 22:02:50 +00:00
Eric Christopher
08e9f0250a
Temporarily revert r110987 as it's causing some miscompares in
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vector heavy code. I'll re-enable when we've tracked down the problem.
llvm-svn: 111318
2010-08-17 22:55:27 +00:00
Nate Begeman
e57074fc48
Reapply this transformation now that it is passing the external test which it previously failed.
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llvm-svn: 110987
2010-08-13 00:17:53 +00:00
Eric Christopher
34acdf57df
Temporarily revert 110737 and 110734, they were causing failures
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in an external testsuite.
llvm-svn: 110905
2010-08-12 07:01:22 +00:00
Nate Begeman
713062e756
Add the minimal amount of smarts necessary to instcombine of shufflevectors to recognize
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patterns generated by clang for transpose of a matrix in generic vectors. This is made
of two parts:
1) Propagating vector extracts of hi/lo half into their users
2) Recognizing an insertion of even elements followed by the odd elements as an unpack.
Testcase to come, but this shrinks the # of shuffle instructions generated on x86 from ~40 to the minimal 8.
llvm-svn: 110734
2010-08-10 21:38:12 +00:00
Duncan Sands
1b33dd3c83
There are two ways of checking for a given type, for example isa<PointerType>(T)
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and T->isPointerTy(). Convert most instances of the first form to the second form.
Requested by Chris.
llvm-svn: 96344
2010-02-16 11:11:14 +00:00
Chris Lattner
9635fe03ca
fix some problems handling large vectors reported in PR6230
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llvm-svn: 95616
2010-02-08 23:56:03 +00:00
Chris Lattner
916d97c2d5
reduce indentation
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llvm-svn: 92684
2010-01-05 05:42:08 +00:00
Chris Lattner
e22030e730
split vector stuff out to InstCombineVectorOps.cpp
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llvm-svn: 92683
2010-01-05 05:36:20 +00:00
