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4 Commits

Author SHA1 Message Date
Dan Gohman
211f53aa04 Revert r134366 and add an explicit triple to make this test host-independent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134447 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-05 22:09:19 +00:00
NAKAMURA Takumi
7495ea7fe9 test/CodeGen/X86/lsr-nonaffine.ll: Relax expressions for Win64 CC to appease Win32 hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134366 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-03 09:26:14 +00:00
Dan Gohman
71997f303e Teach IVUsers to stop at non-affine expressions unless they are both 
outside the loop and reducible.

This more completely hides them from LSR, which isn't usually able to
do anything meaningful with non-affine expressions anyway, and this
consequently hides them from SCEVExpander, which is acutely unprepared
for non-affine expressions.

Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests
the new behavior.

This works around the bug in PR10117 / rdar://problem/9633149, and is
generally an improvement besides.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134268 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-01 22:05:19 +00:00
Dan Gohman
c87b40b1cd Fix normalization and de-normalization of non-affine SCEVs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105480 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-04 19:16:34 +00:00