[llvm] [RISCV][GISEL] Legalize G_VSCALE (PR #85967)

[Craig Topper via llvm-commits]

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@@ -374,6 +374,8 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST)
       .clampScalar(0, s32, sXLen)
       .lowerForCartesianProduct({s32, sXLen, p0}, {p0});
 
+  getActionDefinitionsBuilder(G_VSCALE).customFor({sXLen});
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topperc wrote:

Don't you need a clamp scalar if the type isn't sXLen? The vectorizer always uses s32.

https://github.com/llvm/llvm-project/pull/85967