James Y Knight 99a2ce2af2 Check for register clobbers when merging a vreg live range with a
reserved physreg in RegisterCoalescer.

Previously, we only checked for clobbers when merging into a READ of
the physreg, but not when merging from a WRITE to the physreg.

Differential Revision: https://reviews.llvm.org/D28527

llvm-svn: 291942
2017-01-13 19:08:36 +00:00
2017-01-13 18:55:32 +00:00
2017-01-13 18:29:56 +00:00
2017-01-12 21:36:22 +00:00
2017-01-12 21:37:55 +00:00
2017-01-13 10:41:59 +00:00
2017-01-12 22:47:01 +00:00
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