• Andreas Haas's avatar
    Reland [turbofan] Implement on-stack returns (Intel) · bd732f7d
    Andreas Haas authored
    The original CL introduced a test which uses a random number generator.
    I disable the test for now, which is okay because this CL adds to a
    work-in-progress feature anyways, and I will fix the problem in another
    CL.
    
    Original description:
    Add the ability to return (multiple) return values on the stack:
    
    - Extend stack frames with a new buffer region for return slots.
      This region is located at the end of a caller's frame such that
      its slots can be indexed as caller frame slots in a callee
      (located beyond its parameters) and assigned return values.
    - Adjust stack frame constructon and deconstruction accordingly.
    - Extend linkage computation to support register plus stack returns.
    - Reserve return slots in caller frame when respective calls occur.
    - Introduce and generate architecture instructions ('peek') for
      reading back results from return slots in the caller.
    - Aggressive tests.
    - Some minor clean-up.
    
    So far, only ia32 and x64 are implemented.
    
    Change-Id: I8b03fc4e53946daaa0e14a34603f4824a04fad7e
    Reviewed-on: https://chromium-review.googlesource.com/819557Reviewed-by: 's avatarBen Titzer <titzer@chromium.org>
    Commit-Queue: Andreas Haas <ahaas@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#50031}
    bd732f7d
instruction-selector.h 19 KB