• Clemens Hammacher's avatar
    [wasm] [interpreter] Ignore stack effects after unreachable · 4423c9cc
    Clemens Hammacher authored
    During computation of the side table, ignore stack effects of
    instructions following any unconditional jump in the same block
    (|unreachable|, |br|, |br_table| or |return| jump out of the block).
    Without this fix, the current stack height might underflow, or we compute an
    unnecessarily large max_stack_height_. Note that those instruction will
    never get executed anyway.
    Hence, we don't need to store any side table information for such
    unreachable code.
    
    R=rossberg@chromium.org
    BUG=chromium:716936, chromium:715990
    
    Change-Id: I282f7f18ba1b972a112210e692f6cd05cf32308c
    Reviewed-on: https://chromium-review.googlesource.com/493266Reviewed-by: 's avatarAndreas Rossberg <rossberg@chromium.org>
    Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#45059}
    4423c9cc
wasm-opcodes.h 26.4 KB