[llvm] [llvm][ELF]Add Shdr check for getBuildID (PR #126537)

[James Henderson via llvm-commits]

================
@@ -15,3 +15,26 @@ FileHeader:
   Type:    ET_EXEC
   Machine: EM_X86_64
   EPhOff:  0xffffff
+
+
+# RUN: yaml2obj --docnum=2 %s -o %t.note.err
+# RUN: llvm-objdump -D %t.note.err 2>&1 | \
+# RUN:   FileCheck %s --check-prefix=PFILESIZE
+
+# PFILESIZE:          Disassembly of section .note.gnu.build-id:
+
+--- !ELF
+FileHeader:
+  Class:          ELFCLASS64
+  Data:           ELFDATA2LSB
+  Type:           ET_EXEC
+  Machine:        EM_X86_64
+Sections:
+  - Name:         .note.gnu.build-id
+    Type:         SHT_NOTE
+    Content:      040000000800000003000000474e5500abb50d82b6bdc861
----------------
jh7370 wrote:

yaml2obj provides a way to write note sections in a human-readable form. See llvm/test/tools/yaml2obj/ELF/note-section.yaml for an example. That would be a better way of writing the notes than a binary blob like this.

https://github.com/llvm/llvm-project/pull/126537