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

[James Henderson via llvm-commits]

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@@ -20,23 +20,39 @@
 
 ## We report an error when we can't infer the triple because we don't have --triple or an input object (including a.out).
 # RUN: not llvm-objdump --mattr=help 2>&1 \
-# RUN:   | FileCheck %s --check-prefix=CHECK-ERROR --implicit-check-not=error: -DMSG=%errc_ENOENT
+# RUN:   | FileCheck %s --check-prefix=CHECK-MISSING-ERROR --implicit-check-not=error: -DMSG=%errc_ENOENT
 # RUN: not llvm-objdump --mcpu=help 2>&1 \
-# RUN:   | FileCheck %s --check-prefix=CHECK-ERROR --implicit-check-not=error: -DMSG=%errc_ENOENT
+# RUN:   | FileCheck %s --check-prefix=CHECK-MISSING-ERROR --implicit-check-not=error: -DMSG=%errc_ENOENT
+
+# RUN: yaml2obj --docnum=2 %s -o %t.minidump
+## We report an error when the binary file cannot be convert to a recognized object.
----------------
jh7370 wrote:

```suggestion
## We report an error when the binary file isn't an object file format.
```

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