Fangrui Song ecc93ed2d7 [ELF] Replace InputBaseSection::{areRelocsRela,firstRelocation,numRelocation} with relSecIdx ...

For `InputSection` `.foo`, its `InputBaseSection::{areRelocsRela,firstRelocation,numRelocation}` basically
encode the information of `.rel[a].foo`. However, one uint32_t (the relocation section index)
suffices. See the implementation of `relsOrRelas`.

This change decreases sizeof(InputSection) from 184 to 176 on 64-bit Linux.

The maximum resident set size linking a large application (1.2G output) decreases by 0.39%.

Differential Revision: https://reviews.llvm.org/D112513

2021-10-27 09:51:07 -07:00

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