[llvm] [RISCV] Remove implicit $vl def on vleNff pseudos (PR #143935)

[Min-Yih Hsu via llvm-commits]

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@@ -3016,12 +3016,9 @@ entry:
   ret void
 }
 
-; Test with both outputs dead. Make sure the vleff isn't deleted.
 define void @intrinsic_vleff_dead_all(ptr %0, iXLen %1, ptr %2) nounwind {
 ; CHECK-LABEL: intrinsic_vleff_dead_all:
 ; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    vsetvli zero, a1, e64, m1, ta, ma
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mshockwave wrote:

I couldn't think of any side effect other than VL update (which, in this case, is dead) that would prevent this instruction from being removed by dead machine instruction elimination fairly in the pipeline. So I  _think_ this is correct.

https://github.com/llvm/llvm-project/pull/143935