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3 Commits

Author SHA1 Message Date
Evan Cheng
ddc8678b00 Coalescer should not delete extract_subreg, insert_subreg, and subreg_to_reg of 
physical registers. This is especially critical for the later two since they
start the live interval of a super-register. e.g.
%DO<def> = INSERT_SUBREG %D0<undef>, %S0<kill>, 1
If this instruction is eliminated, the register scavenger will not be happy as
D0 is not defined previously.
This fixes PR5055.

llvm-svn: 82968
 2009-09-28 05:28:43 +00:00
Dan Gohman
142428ce64 Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81293
 2009-09-09 00:09:15 +00:00
Jakob Stoklund Olesen
e7bffd7796 Add XFAIL test case for a scavenger assert. 
llvm-svn: 79092
 2009-08-15 12:09:56 +00:00