llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-31 10:34:17 +00:00

History

Chris Lattner 1118d25d39 Add code that checks for noop copies, which triggers when either:

1. a target doesn't know how to fold load/stores into copies, or
2. the spiller rewrites the input to a copy to the same register as the dest
   instead of to the reloaded reg.

This will be moved/improved in the near future, but allows elimination of
some ancient x86 hacks.  This eliminates 92 copies from SMG2000 on X86 and
163 copies from 252.eon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25922 91177308-0d34-0410-b5e6-96231b3b80d8

2006-02-03 02:02:59 +00:00

Analysis

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