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6c54ab548f
Support relaxation optimization for two types of code sequences.
```
From:
pcalau12i $a0, %pc_hi20(sym)
R_LARCH_PCALA_HI20, R_LARCH_RELAX
addi.w/d $a0, $a0, %pc_lo12(sym)
R_LARCH_PCALA_LO12, R_LARCH_RELAX
To:
pcaddi $a0, %pc_lo12(sym)
R_LARCH_PCREL20_S2
From:
pcalau12i $a0, %got_pc_hi20(sym_got)
R_LARCH_GOT_PC_HI20, R_LARCH_RELAX
ld.w/d $a0, $a0, %got_pc_lo12(sym_got)
R_LARCH_GOT_PC_LO12, R_LARCH_RELAX
To:
pcaddi $a0, %got_pc_hi20(sym_got)
R_LARCH_PCREL20_S2
```
Others:
- `loongarch-relax-pc-hi20-lo12-got-symbols.s` is inspired by
`aarch64-adrp-ldr-got-symbols.s`.
Co-authored-by: Xin Wang
[wangxin03@loongson.cn](mailto:wangxin03@loongson.cn)
LLVM Linker (lld)
This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.
lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.
Benchmarking
In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.
It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz
The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.