[llvm] [RISCV][VSETVLI] Prefer VTYPE for immediate known to be less than VLMAX (PR #69759)

[Craig Topper via llvm-commits]

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@@ -23,7 +23,7 @@ define void @extract_v2i8_v4i8_2(ptr %x, ptr %y) {
 ; CHECK-NEXT:    vle8.v v8, (a0)
 ; CHECK-NEXT:    vsetivli zero, 2, e8, mf4, ta, ma
 ; CHECK-NEXT:    vslidedown.vi v8, v8, 2
-; CHECK-NEXT:    vsetivli zero, 2, e8, mf8, ta, ma
+; CHECK-NEXT:    vsetvli zero, zero, e8, mf8, ta, ma
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topperc wrote:

Seems like we could get away with just doing the store with the old vtype?

https://github.com/llvm/llvm-project/pull/69759