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14 Commits

Author SHA1 Message Date
Jay Foad 25a5e4ca1f PR5207: Rename overloaded APInt methods set(), clear(), flip() to 
setAllBits(), setBit(unsigned), etc.

llvm-svn: 120564
 2010-12-01 08:53:58 +00:00
Bob Wilson 67a6f32c59 Clean up indentation and other whitespace. 
llvm-svn: 117728
 2010-10-29 22:20:45 +00:00
Bob Wilson 8ecf98b04f Remove trailing whitespace. 
llvm-svn: 117727
 2010-10-29 22:20:43 +00:00
Bob Wilson 9d07f39ace Fix 80-column violation. 
llvm-svn: 117722
 2010-10-29 22:03:07 +00:00
Bob Wilson 11ee456e23 Change instcombine's getShuffleMask to represent undef with negative values. 
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 cb11b48e7a Make instcombine a little more aggressive in combining vector shuffles. 
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 51edc7b7e1 Temporarily revert r110987 as it's causing some miscompares in 
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 2a0ca3e937 Reapply this transformation now that it is passing the external test which it previously failed. 
llvm-svn: 110987
 2010-08-13 00:17:53 +00:00
Eric Christopher ac40d49c70 Temporarily revert 110737 and 110734, they were causing failures 
in an external testsuite.

llvm-svn: 110905
 2010-08-12 07:01:22 +00:00
Nate Begeman 265363061e Add the minimal amount of smarts necessary to instcombine of shufflevectors to recognize 
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 19d0b47b1f There are two ways of checking for a given type, for example isa<PointerType>(T) 
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 b22423c89a fix some problems handling large vectors reported in PR6230 
llvm-svn: 95616
 2010-02-08 23:56:03 +00:00
Chris Lattner 841af4f03d reduce indentation 
llvm-svn: 92684
 2010-01-05 05:42:08 +00:00
Chris Lattner ec97a90221 split vector stuff out to InstCombineVectorOps.cpp 
llvm-svn: 92683
 2010-01-05 05:36:20 +00:00