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6 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
32cf19caa6 Fix register-dependent X86 tests. 
llvm-svn: 128867
 2011-04-05 00:32:44 +00:00
Evan Cheng
d4fe387eb8 Enable i16 to i32 promotion by default. 
llvm-svn: 102493
 2010-04-28 08:30:49 +00:00
Chris Lattner
2b798aafd0 make these less sensitive to asm verbose changes by disabling it for them. 
llvm-svn: 95175
 2010-02-03 00:48:53 +00:00
Evan Cheng
eb82c3743a Turn on post-alloc scheduling for x86. 
llvm-svn: 84431
 2009-10-18 19:57:27 +00:00
Daniel Dunbar
a953c39b9e Eliminate uses of %prcontext. 
- I'd appreciate it if someone else eyeballs my changes to make sure I captured
   the intent of the test.

llvm-svn: 81083
 2009-09-05 11:35:16 +00:00
Evan Cheng
a36c6c6819 It has finally happened. Spiller is now using live interval info. 
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue.

llvm-svn: 69743
 2009-04-21 22:46:52 +00:00