Hal Finkel 2edfbddcf0 Improve ext/trunc patterns on PPC64. ...

The PPC64 backend had patterns for i32 <-> i64 extensions and truncations that
would leave self-moves in the final assembly. Replacing those patterns with ones
based on the SUBREG builtins yields better-looking code.

Thanks to Jakob and Owen for their suggestions in this matter.

llvm-svn: 158283

2012-06-09 22:10:19 +00:00

2.4 KiB

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