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Rollup merge of #82376 - tmiasko:inline-options, r=oli-obk

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Add option to enable MIR inlining independently of mir-opt-level

Add `-Zinline-mir` option that enables MIR inlining independently of the
current MIR opt level. The primary use-case is enabling MIR inlining on the
default MIR opt level.

Turn inlining thresholds into optional values to make it possible to configure
different defaults depending on the current mir-opt-level (although thresholds
are yet to be used in such a manner).
This commit is contained in:
Yuki Okushi 2021-03-02 21:23:14 +09:00 • committed by GitHub
commit ae5e024194
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4 changed files with 29 additions and 21 deletions
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6
compiler/rustc_session/src/options.rs
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@ -957,9 +957,11 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
(default: no)"),
incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
"verify incr. comp. hashes of green query instances (default: no)"),
inline_mir_threshold: usize = (50, parse_uint, [TRACKED],
inline_mir: Option<bool> = (None, parse_opt_bool, [TRACKED],
"enable MIR inlining (default: no)"),
inline_mir_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
"a default MIR inlining threshold (default: 50)"),
inline_mir_hint_threshold: usize = (100, parse_uint, [TRACKED],
inline_mir_hint_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
"inlining threshold for functions with inline hint (default: 100)"),
inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
"control whether `#[inline]` functions are in all CGUs"),