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Author SHA1 Message Date
Jakob Stoklund Olesen 17d4f9bbcc Prepare remaining tests for -join-physreg going away. 
llvm-svn: 130893
 2011-05-04 23:54:59 +00:00
Evan Cheng 8c4df8160e The check for coalescing a virtual register to a physical register, e.g. 
cl = EXTRACT_SUBREG reg1024, 1, is overly conservative. It should check
for overlaps of vr's live interval with the super registers of the
physical register (ECX in this case) and let JoinIntervals() handle checking
the coalescing feasibility against the physical register (cl in this case).

llvm-svn: 98251
 2010-03-11 08:20:21 +00:00