[PATCH] D45284: [RISCV] More validations on the input value of -march=

[Ana Pazos via Phabricator via cfe-commits]

apazos updated this revision to Diff 142459.
apazos added a comment.

- Simplified hasOtherExtensions() now that we clarified non-standard extensions are separated by '_'. We just need to find the first occurrence of the prefixes.
- updated error message, removed "unsupported" from some messages.


https://reviews.llvm.org/D45284

Files:
  include/clang/Basic/DiagnosticDriverKinds.td
  lib/Driver/ToolChains/Arch/RISCV.cpp
  test/Driver/riscv-arch.c

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