OpenE2K/rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

session: Add two tracked, exclusive codegen options for PGO profile usage and generation.

Browse Source 
Signed-off-by: Emilio Cobos Álvarez <emilio@crisal.io>
This commit is contained in:
Emilio Cobos Álvarez 2018-02-19 01:46:39 +01:00
parent e8a1575cf6
commit 804f959507
No known key found for this signature in database
GPG Key ID: 056B727BB9C1027C
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/librustc/session/config.rs
View File

@ -1027,6 +1027,11 @@ options! {CodegenOptions, CodegenSetter, basic_codegen_options,
"`-C save-temps` might not produce all requested temporary products \
when incremental compilation is enabled.")],
"save all temporary output files during compilation"),
pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
"Generate PGO profile data, to a given file, or to the default \
location if it's empty."),
pgo_use: String = (String::new(), parse_string, [TRACKED],
"Use PGO profile data from the given profile file."),
rpath: bool = (false, parse_bool, [UNTRACKED],
"set rpath values in libs/exes"),
overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
@ -1801,6 +1806,13 @@ pub fn build_session_options_and_crate_config(
let mut codegen_units = cg.codegen_units;
let mut disable_thinlto = false;
if cg.pgo_gen.is_some() && !cg.pgo_use.is_empty() {
early_error(
error_format,
"options `-C pgo-gen` and `-C pgo-use` are exclussive",
);
}
// Issue #30063: if user requests llvm-related output to one
// particular path, disable codegen-units.
let incompatible: Vec<_> = output_types
@ -2824,6 +2836,14 @@ mod tests {
opts.cg.lto = Lto::Fat;
assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
opts = reference.clone();
opts.cg.pgo_gen = Some(String::from("abc"));
assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
opts = reference.clone();
opts.cg.pgo_use = String::from("abc");
assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
opts = reference.clone();
opts.cg.target_cpu = Some(String::from("abc"));
assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());