513bd8a73c
InstCombine: canonicalize sext-and --> select
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sext-not-and --> select.
Patch by Muhammad Tauqir Ahmad.
llvm-svn: 173901
2013-01-30 06:35:22 +00:00
64ffd11d49
fix logical-select to invoke filecheck right, and fix hte instcombine
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xform it is checking to actually pass. There is no need to match
m_SelectCst<0, -1> since instcombine canonicalizes that into not(sext).
Add matches for sext(not(x)) in addition to not(sext(x)).
llvm-svn: 95420
2010-02-05 19:53:02 +00:00
1b35bbe813
change the canonical form of "cond ? -1 : 0" to be
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"sext cond" instead of a select. This simplifies some instcombine
code, matches the policy for zext (cond ? 1 : 0 -> zext), and allows
us to generate better code for a testcase on ppc.
llvm-svn: 94339
2010-01-24 00:09:49 +00:00
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
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llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
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of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
c3f3b059d0
Handle the case where there is no "not". It is possible it got
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folded into the select.
llvm-svn: 59389
2008-11-16 04:25:26 +00:00
645f60141b
make this actually test what it is trying to.
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llvm-svn: 59386
2008-11-16 04:21:51 +00:00
13cbcf1c18
Canonicalize sext(i1) to i1?-1:0, and update various instcombine
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optimizations accordingly.
llvm-svn: 58457
2008-10-30 20:40:10 +00:00
2c34c130bf
(A & sext(C)) | (B & ~sext(C) -> C ? A : B
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llvm-svn: 58351
2008-10-28 22:38:57 +00:00
Nadav Rotem