[PATCH] D107711: [RISCV] Optimize (add (mul x, c0), c1)

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp:537
+    SDNode *NM =
+        CurDAG->getMachineNode(RISCV::MUL, DL, VT, SDValue(NA, 0),
+                               N0->getOperand(1));
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What about all the optimizations we have for mul by constant using SHXADD? Won't this miss out on those?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D107711/new/

https://reviews.llvm.org/D107711