tree 75911367f82a47ccaa43a642da3b55d37ede4d78
parent 591383f5eea58b7fcf61768010afa9d6b529f7b0
author Jinyang He <hejinyang@loongson.cn> 1707181753 +0800
committer Copybara-Service <copybara-worker@google.com> 1707182683 -0800

[lld][ELF] Support relax R_LARCH_ALIGN (#78692)

Refer to commit 6611d58f5bbc ("Relax R_RISCV_ALIGN"), we can relax
R_LARCH_ALIGN by same way. Reuse `SymbolAnchor`, `RISCVRelaxAux` and
`initSymbolAnchors` to simplify codes. As `riscvFinalizeRelax` is an
arch-specific function, put it override on `TargetInfo::finalizeRelax`,
so that LoongArch can override it, too.

The flow of relax R_LARCH_ALIGN is almost consistent with RISCV. The
difference is that LoongArch only has 4-bytes NOP and all executable
insn is 4-bytes aligned. So LoongArch not need rewrite NOP sequence.
Alignment maxBytesEmit parameter is supported in psABI v2.30.

GitOrigin-RevId: 06a728f3feab876f9195738b5774e82dadc0f3a7