• Michael Starzinger's avatar
    [wasm][arm] Fix {Word32Shr} instruction selection. · 8a3c4d9e
    Michael Starzinger authored
    This fixes a corner case with the matching for a {UBFX} instruction.
    According to the ISA reference "UBFX Rd, Rn, #lsb, #width" is only valid
    for "#width" in the [1;32-#lsb] range. Specifically a "#width" of 0 is
    invalid but was not checked against by the instruction selector.
    
    R=ahaas@chromium.org
    TEST=mjsunit/regress/wasm/regress-924905
    BUG=chromium:924905
    
    Change-Id: I470671282b215be62dfd147a619a0d317f7cc746
    Reviewed-on: https://chromium-review.googlesource.com/c/1435939Reviewed-by: 's avatarAndreas Haas <ahaas@chromium.org>
    Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#59096}
    8a3c4d9e
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