[llvm] [RISCV][GISel] Legalize G_SMULO/G_UMULO (PR #67635)

[via llvm-commits]

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@@ -145,13 +145,21 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
         .legalFor({XLenLLT})
         .lower();
     // clang-format on
+
+    getActionDefinitionsBuilder({G_SMULO, G_UMULO})
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tschuett wrote:

I have a feeling that you are going for coverage and not performance. Could you instead do a `custom` legalization, i.e. RISC-V specific and not generic lower?

https://github.com/llvm/llvm-project/pull/67635