[llvm] [RISCV] Add extract_subvector tests for a statically-known VLEN. NFC (PR #65389)

[Luke Lau via llvm-commits]

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@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -mtriple=riscv64 -mattr=+m,+v -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=2 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX2
-; RUN: llc -mtriple=riscv64 -mattr=+m,+v -riscv-v-vector-bits-min=128 -riscv-v-fixed-length-vector-lmul-max=1 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,LMULMAX1
+; RUN: llc -mtriple=riscv64 -mattr=+m,+v -riscv-v-vector-bits-min=128 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK,UNKNOWNVLEN
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lukel97 wrote:

Yeah that always bothered me too, it's in a lot of other tests. I can do a big sweep and remove them in a separate PR?

https://github.com/llvm/llvm-project/pull/65389