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5 Commits

Author SHA1 Message Date
Evan Cheng 050df1b8de Enable i16 to i32 promotion by default. 
llvm-svn: 102493
 2010-04-28 08:30:49 +00:00
Chris Lattner dee74e2805 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 c436631a9c Turn on post-alloc scheduling for x86. 
llvm-svn: 84431
 2009-10-18 19:57:27 +00:00
Daniel Dunbar b9ea94c990 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 1a99a5f501 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