[llvm] [RISCV][GISEL] instruction-select vmclr (PR #110782)

[Craig Topper via llvm-commits]

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@@ -50,6 +50,11 @@ def GIAddrRegImm :
   GIComplexOperandMatcher<s32, "selectAddrRegImm">,
   GIComplexPatternEquiv<AddrRegImm>;
 
+def GIVLOpS32 : GIComplexOperandMatcher<s32, "selectVLOp">,
+                GIComplexPatternEquiv<VLOp>;
+def GIVLOpS64 : GIComplexOperandMatcher<s64, "selectVLOp">,
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topperc wrote:

I'm not sure how this works. The pattern refers to `VLOp`. How does tablegen know which of these GISel rules to pick?

https://github.com/llvm/llvm-project/pull/110782