[llvm] [RISCV] Enable tail folding by default (PR #151681)

[Philip Reames via llvm-commits]

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@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
 ; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S | FileCheck %s -check-prefix=NO-ZVFBFMIN
-; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue | FileCheck %s -check-prefix=NO-ZVFBFMIN
+; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S -prefer-predicate-over-epilogue=scalar-epilogue | FileCheck %s -check-prefix=NO-ZVFBFMIN
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preames wrote:

This is an extremely pedantic comment, but what the heck....

In a case like this where you're preserving the behavior of the existing run lines, can you add an explicit run line with the new default made explicit?  Having the default mode line too is fine, but if you're specifically checking that both configurations are tested, please explicitly test both modes. 

Also, once done, please precommit the run line changes.

https://github.com/llvm/llvm-project/pull/151681