[PATCH] D143901: [AVR] Fix inaccurate offsets in PC relative branch instructions

[Ben Shi via Phabricator via llvm-commits]

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In avr-gcc, the destination of "rjmp label + offset" is address
'label + offset', while destination of "rjmp . + offset" is
'address_of_rjmp + offset + 2'.

Clang is in accordance with avr-gcc for "rjmp label + offset", but
emits incorrect destination of "rjmp . + offset" to 'address_of_rjmp + offset'.

This patch fixes the above issue.

Fixes https://github.com/llvm/llvm-project/issues/60019


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D143901

Files:
  llvm/lib/Target/AVR/MCTargetDesc/AVRAsmBackend.cpp
  llvm/test/MC/AVR/inst-brbc.s
  llvm/test/MC/AVR/inst-brbs.s
  llvm/test/MC/AVR/inst-family-cond-branch.s
  llvm/test/MC/AVR/inst-rcall.s
  llvm/test/MC/AVR/inst-rjmp.s

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