[llvm] [llvm-objcopy][ELF] Add an option to remove notes (PR #118739)

[James Henderson via llvm-commits]

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@@ -0,0 +1,98 @@
+# RUN: not llvm-objcopy --remove-note= - 2>&1 | FileCheck %s --check-prefix=ERR-NOTYPEID
+# RUN: not llvm-objcopy --remove-note=/1 - 2>&1 | FileCheck %s --check-prefix=ERR-EMPTYNAME
+# RUN: not llvm-objcopy --remove-note=CORE/1/2 - 2>&1 | FileCheck %s --check-prefix=ERR-INVNUM1
+# RUN: not llvm-objcopy --remove-note=Notanumber - 2>&1 | FileCheck %s --check-prefix=ERR-INVNUM2
+# RUN: not llvm-objcopy --remove-note=CORE/Notanumber - 2>&1 | FileCheck %s --check-prefix=ERR-INVNUM2
+
+# ERR-NOTYPEID: error: bad format for --remove-note, missing type_id
+# ERR-EMPTYNAME: error: bad format for --remove-note, note name is empty
+# ERR-INVNUM1: error: bad note type_id for --remove-note: '1/2'
+# ERR-INVNUM2: error: bad note type_id for --remove-note: 'Notanumber'
+
+# RUN: yaml2obj -D ALIGN=8 %s -o - \
+# RUN:   | llvm-objcopy --remove-note=0x01 --remove-note=DUMMY/0x02 --remove-note=CORE/0x03 - - \
----------------
jh7370 wrote:

I prefer a style of:
```
# RUN: command1 | \
# RUN:    command2
```
This means when reading the first line you know you've got to the end of command1.

https://github.com/llvm/llvm-project/pull/118739