[llvm] [RISCV] Remove RISCVISD::VSELECT_VL. (PR #76866)

[Craig Topper via llvm-commits]

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@@ -2570,6 +2511,16 @@ foreach fvti = AllFloatVectors in {
                  fvti.RegClass:$merge, fvti.RegClass:$rs2, fvti.RegClass:$rs1, (fvti.Mask V0),
                  GPR:$vl, fvti.Log2SEW)>;
 
+  def : Pat<(fvti.Vector (riscv_vmerge_vl (fvti.Mask V0),
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topperc wrote:

We had this pattern for vselect_vl but not vmerge_vl. Add it for vmerge_vl avoids a regression.

https://github.com/llvm/llvm-project/pull/76866