llvm/test/Transforms, branch release_29

Merging r128577

2011-03-30T21:44:24Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_29@128579 91177308-0d34-0410-b5e6-96231b3b80d8

--- Merging r127464 into '.':

2011-03-14T20:06:27Z

U test/Transforms/InstCombine/select.ll U lib/Transforms/InstCombine/InstCombineSelect.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_29@127609 91177308-0d34-0410-b5e6-96231b3b80d8

Preserve line no. info.

2011-03-07T22:43:45Z

Radar 9097659 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127182 91177308-0d34-0410-b5e6-96231b3b80d8

Add test for r127138.

2011-03-07T21:28:14Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127172 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak this test. We can analyze what happens and show that we still do the

2011-03-07T02:10:18Z

right thing, instead of merely being unable to analyze and the transform doesn't occur. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127149 91177308-0d34-0410-b5e6-96231b3b80d8

Add more analysis of the sign bit of an srem instruction. If the LHS is negative

2011-03-07T01:50:10Z

then the result could go either way. If it's provably positive then so is the srem. Fixes PR9343 #7! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127146 91177308-0d34-0410-b5e6-96231b3b80d8

ConstantInt has some getters which return ConstantInt's or ConstantVector's of

2011-03-06T03:36:19Z

the value splatted into every element. Extend this to getTrue and getFalse which by providing new overloads that take Types that are either i1 or . Use it in InstCombine to add vector support to some code, fixing PR8469! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127116 91177308-0d34-0410-b5e6-96231b3b80d8

Thread comparisons over udiv/sdiv/ashr/lshr exact and lshr nuw/nsw whenever

2011-03-05T05:19:11Z

possible. This goes into instcombine and instsimplify because instsimplify doesn't need to check hasOneUse since it returns (almost exclusively) constants. This fixes PR9343 #4 #5 and #8! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127064 91177308-0d34-0410-b5e6-96231b3b80d8

Try once again to optimize "icmp (srem X, Y), Y" by turning the comparison into

2011-03-05T04:28:48Z

true/false or "icmp slt/sge Y, 0". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127063 91177308-0d34-0410-b5e6-96231b3b80d8

Revert broken srem logic from r126991.

2011-03-04T19:26:08Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127021 91177308-0d34-0410-b5e6-96231b3b80d8