[PATCH] D146216: [lld][ELF] Relax long jump/call to short jump/call on AVR

Wed Apr 12 19:05:09 PDT 2023

benshi001 added a comment.

ping ...

1. relax `long jump` to `short jump + nop` does can save 1 CPU cycle;
2. GNU-ld also does this optimization, as

https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=bfd/elf32-avr.c;h=702719136d09acbc8c98ec49ab8129d0f33fffa8;hb=HEAD#l2721
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=bfd/elf32-avr.c;h=702719136d09acbc8c98ec49ab8129d0f33fffa8;hb=HEAD#l2738

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D146216/new/

https://reviews.llvm.org/D146216