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Commit 7cab17af authored by Evan Cheng's avatar Evan Cheng
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Ignore multi-instruction patterns. e.g. 

def : Pat<(i8 (trunc GR32:$src)),
          (i8 (EXTRACT_SUBREG (MOV32to32_ GR32:$src), x86_subreg_8bit))>

llvm-svn: 55875
parent 421f488c
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