[llvm] [RISCV][GISEL] Legalize and post-legalize lower G_INSERT_SUBVECTOR (PR #108859)

[Thorsten Schütt via llvm-commits]

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@@ -581,6 +581,12 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST)
 
   SplatActions.clampScalar(1, sXLen, sXLen);
 
+  getActionDefinitionsBuilder(G_INSERT_SUBVECTOR)
+      .legalIf(all(typeIsLegalBoolVec(0, BoolVecTys, ST),
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tschuett wrote:

It should be `customIf` again.

https://github.com/llvm/llvm-project/pull/108859