Jakob Stoklund Olesen 70ed924e18 Teach PHIElimination to handle <undef> operands.
When a PHI use is <undef>, don't emit a copy in the predecessor block,
but insert an IMPLICIT_DEF instruction instead. This ensures that
virtual register uses are always jointly dominated by defs, even if some
of them are IMPLICIT_DEF.

llvm-svn: 159121
2012-06-25 03:36:12 +00:00
..
2012-06-21 22:26:01 +00:00
2012-05-02 21:25:32 +00:00
2012-06-19 18:02:35 +00:00
2012-06-19 23:47:58 +00:00
2012-04-03 23:09:22 +00:00
2012-05-24 14:20:13 +00:00

Low Level Virtual Machine (LLVM)
================================

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