[PATCH] D105796: [RISCV] Optimize multiplication in the zba extension with SH*ADD

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVInstrInfoB.td:1016
+          (SLLI (SH1ADD GPR:$r, GPR:$r),
+                (BSETINVTwoBitsMaskLow C3LeftShift:$i))>;
+def : Pat<(mul GPR:$r, C5LeftShift:$i),
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Can we rename BSETINVTwoBitsMaskLow to TrailingZerosXForm?


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  https://reviews.llvm.org/D105796/new/

https://reviews.llvm.org/D105796