cmd/asm,cmd/internal/obj/riscv: provide branch pseudo-instructions

Implement various branch pseudo-instructions for riscv64. These make it easier
to read/write assembly and will also make it easier for the compiler to generate
optimised code.

Change-Id: Ic31a7748c0e1495522ebecf34b440842b8d12c04
Reviewed-on: https://go-review.googlesource.com/c/go/+/226397
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
8 files changed
tree: 4a3f01a4f23931cdaece31bba4dcd9ca65013673
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
  18. SECURITY.md
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