[PATCH] D131700: [AArch64] Add pattern for SQDML*Lv1i32_indexed

[OverMighty via Phabricator via llvm-commits]

overmighty added inline comments.


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Comment at: llvm/lib/Target/AArch64/AArch64InstrFormats.td:8862
                     V128_lo:$Rm, VectorIndexH:$idx),
                 ssub)>;
 
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This matches the vqdmlalh_lane_s16, vqdmlalh_laneq_s16, vqdmlslh_lane_s16, and vqdmlslh_laneq_s16 ACLE functions when the lane is not 0.

I can simply remove this definition and the SQDML*Lv1i32_indexed instructions will be used, however it will result in longer AArch64 code (extra dup instruction).

Is this FIXME really an issue?



Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131700/new/

https://reviews.llvm.org/D131700