Evan Cheng b0a193db31 - Teach LSR to avoid changing cmp iv stride if it will create an immediate that ...

cannot be folded into target cmp instruction.
- Avoid a phase ordering issue where early cmp optimization would prevent the
  later count-to-zero optimization.
- Add missing checks which could cause LSR to reuse stride that does not have
  users.
- Fix a bug in count-to-zero optimization code which failed to find the pre-inc
  iv's phi node.
- Remove, tighten, loosen some incorrect checks disable valid transformations.
- Quite a bit of code clean up.

llvm-svn: 86969

2009-11-12 07:35:05 +00:00

..

llvm

- Teach LSR to avoid changing cmp iv stride if it will create an immediate that

2009-11-12 07:35:05 +00:00

llvm-c

remove the now dead condprop pass, PR3906.

2009-11-11 05:56:35 +00:00