Evan Cheng
5792f51e12
Teach LSR to optimize more loop exit compares, i.e. change them to use postinc iv value. Previously LSR would only optimize those which are in the loop latch block. However, if LSR can prove it is safe (and profitable), it's now possible to change those not in the latch blocks to use postinc values.
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Also, if the compare is the only use, LSR would place the iv increment instruction before the compare instead in the latch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71485 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11 22:33:01 +00:00
Dan Gohman
8733db351a
Make this test more thorough. Not only should there be no %esi,
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there should be no spilling of anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66179 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05 19:31:32 +00:00
Chris Lattner
8a282967ef
add source
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37253 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-19 01:22:52 +00:00
Chris Lattner
b0e07dd19a
new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37251 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-19 01:21:39 +00:00
