[llvm] [RISCV] Adjust RVV stack alignment by ABI (PR #101002)

[Craig Topper via llvm-commits]

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@@ -127,3 +135,8 @@ define void @caller(i32 %n) {
   call void @callee(ptr %1, ptr %2)
   ret void
 }
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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topperc wrote:

Why can't we add the RUN line with only the common check-prefix instead of 2 prefixes? We seem to randomly get patches where someone will remove these unused prefixes. For example fab25949688d7b038ee047d4e8b44a23803db3bd 10c86197010e675bfbac7f324b9ff04e43117c5f 37b474a20e8a731bec9db7033e02013c07bd6fa4

https://github.com/llvm/llvm-project/pull/101002