Evan Cheng fccbd0afc6 Fix PR4986. "r1024 = insert_subreg r1024, undef, 2" cannot be turned in an implicit_def. Instead, it's an identity copy so it should be eliminated. Also make sure to update livevariable kill information. ...

llvm-svn: 82436

2009-09-21 04:32:32 +00:00

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