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Author SHA1 Message Date
Owen Anderson bdff1c997a Teach the ARM peephole optimizer that RSB, RSC, ADC, and SBC can be used for folded comparisons, just like ADD and SUB. 
llvm-svn: 129038
 2011-04-06 23:35:59 +00:00
Johnny Chen 293875ef55 Fix test-llvm failures. 
llvm-svn: 128906
 2011-04-05 18:41:40 +00:00
Jim Grosbach a90af1ba38 Improve 64-subtraction of immediates when parts of the immediate can fit 
in the literal field of an instruction. E.g.,
long long foo(long long a) {
  return a - 734439407618LL;
}

rdar://7038284

llvm-svn: 108339
 2010-07-14 17:45:16 +00:00