• zhengxing.li's avatar
    X87: [ia32] Byte and word memory operands in ia32 cmp/test. · 39c39b54
    zhengxing.li authored
      port 3dd3beb0 (r35199)
    
      original commit message:
      Currently, if the size of two cmp or test operands is a byte or a word, we sign-extend or zero-extend each of them into a 32-bit register before doing the comparison, even when the conditions
      for the use of a memory operand are met.
    
      This CL makes it possible to load only one of them into a register and address the other as a memory operand.
    
      The tricky bit is that, unlike as in the x64 counterpart http://crrev.com/1780193003, not all registers can be accessed as bytes.
    
    BUG=
    
    Review URL: https://codereview.chromium.org/1883373002
    
    Cr-Commit-Position: refs/heads/master@{#35508}
    39c39b54
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