• jyan's avatar
    S390: [wasm] Int64Lowering of Int64Sub. · 680f50a9
    jyan authored
        Port 33c08596
    
        Original commit message:
            Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
            operator takes 4 inputs an generates 2 outputs. The inputs are the low
            word of the left input, high word of the left input, the low word of the
            right input, and high word of the right input. The ouputs are the low
            and high word of the result of the subtraction.
    
            The implementation is very similar to the implementation of Int64Add.
    
    R=ahaas@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
    BUG=
    
    Review URL: https://codereview.chromium.org/1807243002
    
    Cr-Commit-Position: refs/heads/master@{#34865}
    680f50a9
disasm-s390.cc 39.3 KB