bjoernager/rust
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Implement -Z relax-elf-relocations=yes|no

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This lets rustc users tweak whether the linker should relax ELF relocations,
namely whether it should emit R_X86_64_GOTPCRELX relocations instead of
R_X86_64_GOTPCREL, as the former is allowed by the ABI to be further
optimised. The default value is whatever the target defines.
This commit is contained in:
Anthony Ramine 2020-10-26 20:55:07 +01:00
parent 3478d7c360
commit 6febaf2419
3 changed files with 8 additions and 1 deletions
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2
compiler/rustc_session/src/options.rs
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@ -1030,6 +1030,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
"enable queries of the dependency graph for regression testing (default: no)"),
query_stats: bool = (false, parse_bool, [UNTRACKED],
"print some statistics about the query system (default: no)"),
relax_elf_relocations: Option<bool> = (None, parse_opt_bool, [TRACKED],
"whether ELF relocations can be relaxed"),
relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
"choose which RELRO level to use"),
report_delayed_bugs: bool = (false, parse_bool, [TRACKED],