cmd/link/internal/ld: add dwarf testing helpers

Many tests build a program just to analyze it with dwtest.Examiner. Add
gobuildAndExamine, a helper that returns Examiner directly to reduce
duplication in these tests.

Many tests also lookup the DIE for a specific subprogram, which includes
several verification steps. Package those up in findSubprogramDIE.

Change-Id: I72202ba289ae8389b682be525ff7e6cfbfc00ff3
Reviewed-on: https://go-review.googlesource.com/c/go/+/458196
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
1 file changed
tree: 73331ae648fc2d04995139d2ee894273d4e10cf5
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. codereview.cfg
  11. CONTRIBUTING.md
  12. go.env
  13. LICENSE
  14. PATENTS
  15. README.md
  16. SECURITY.md
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