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

[Ruoyu Qiu via llvm-commits]

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@@ -1,12 +1,38 @@
 # RUN: yaml2obj %s -o %t
-# RUN: llvm-objdump -d %t --mattr=help 2>&1 | FileCheck %s
-# RUN: llvm-objdump -d %t --mcpu=help 2>&1 | FileCheck %s
+# RUN: llvm-objdump -d %t --mattr=help 2>&1 \
+# RUN:   | FileCheck %s --check-prefixes=CHECK,CHECK-DISASSEMBLE
+# RUN: llvm-objdump -d %t --mcpu=help 2>&1 \
+# RUN:   | FileCheck %s --check-prefixes=CHECK,CHECK-DISASSEMBLE
+
+## We should be able to retrieve help message without -d.
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cabbaken wrote:

Apologies for that. I clicked the "Add suggestion to batch" and "Commit..." button in review page of github, but I didn't realize this would automatically resolve the comment threads. I will be sure to avoid doing this in the future.

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