• bjaideep's avatar
    PPC/s390: [everywhere] Custom representation for frame type · af76645b
    bjaideep authored
    Port fd596007
    
    Original Commit Message:
    
        Use an opaque format for the frame type marker on the stack, where the
        marker is simply shifted left by 1 instead of being a Smi. This allows
        us to generate simpler code for frame initialisation, as we can push a
        smaller value, decreasing the prologue by 4 bytes and one instruction.
    
    R=leszeks@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
    BUG=
    LOG=N
    
    Review-Url: https://codereview.chromium.org/2709483007
    Cr-Commit-Position: refs/heads/master@{#43356}
    af76645b
lithium-codegen-s390.cc 193 KB