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
f5b353c1fd
optimize a common idiom generated by clang for bitfield access, PR2638.
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llvm-svn: 54408
2008-08-06 07:35:52 +00:00
b5ee8b3e89
make truncate/sext elimination capable of changing phi's. This
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implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.
llvm-svn: 52440
2008-06-18 04:00:49 +00:00
0843435b36
Oops, commit the version of this test that actually works.
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llvm-svn: 51351
2008-05-20 21:19:36 +00:00
81ab753b14
Port SelectionDAG's ComputeNumSignBits-using code to instcombine,
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now that instcombine also has ComputeNumSignBits.
llvm-svn: 51350
2008-05-20 21:01:12 +00:00
72ec3f4562
Teach InstCombine's ComputeMaskedBits what SelectionDAG's
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ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach
SelectionDAG's ComputeMaskedBits what InstCombine's knows
about SRem. And teach them both some things about high bits
in Mul, UDiv, URem, and Sub. This allows instcombine and
dagcombine to eliminate sign-extension operations in
several new cases.
llvm-svn: 50358
2008-04-28 17:02:21 +00:00
Dan Gohman