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Author SHA1 Message Date
NAKAMURA Takumi 1b845f712a test/CodeGen/ARM/test-sharedidx.ll: Fix for -Asserts. 
llvm-svn: 148107
 2012-01-13 07:03:55 +00:00
Evan Cheng fa8326334b DAGCombine's logic for forming pre- and post- indexed loads / stores were being 
overly conservative. It was concerned about cases where it would prohibit
folding simple [r, c] addressing modes. e.g.
  ldr r0, [r2]
  ldr r1, [r2, #4]
=>
  ldr r0, [r2], #4
  ldr r1, [r2]
Change the logic to look for such cases which allows it to form indexed memory
ops more aggressively.

rdar://10674430

llvm-svn: 148086
 2012-01-13 01:37:24 +00:00