[llvm] [llvm-objdump] Support --mcpu=help/--mattr=help without -d (PR #165661)

[James Henderson via llvm-commits]

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@@ -0,0 +1,25 @@
+# RUN: yaml2obj %s -o %t
+# REQUIRES: x86-registered-target
+
+## When specifying --triple, the help message should be printed for the specified target.
+# RUN: llvm-objdump --mattr=help --triple=x86_64 2>&1 \
+# RUN:   | FileCheck %s --check-prefixes=CHECK-HELP,CHECK-X86
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jh7370 wrote:

If I'm not mistaken, all tests in this file now have the same set of prefixes. If that's the case, you can just omit `--check-prefixes` and use `CHECK` as the FileCheck prefix for the check patterns below.

https://github.com/llvm/llvm-project/pull/165661