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    [wasm] Int64Lowering of Word64Popcnt. · 2e6f3e86
    ahaas authored
    Word64Popcnt is lowered to Word32Popcnt(low-word) + Word32Popcnt(high_word).
    Since the optional Word64Popcnt operator does not exist on 32 bit platforms,
    I introduced a new operator "Word64PopcntPlaceholder" which is generated
    in the WasmCompiler and then lowered in the Int64Lowering.
    
    R=titzer@chromium.org
    
    Review URL: https://codereview.chromium.org/1803453003
    
    Cr-Commit-Position: refs/heads/master@{#34777}
    2e6f3e86
machine-operator.cc 23.4 KB