bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

coverage: Attach an optional FunctionCoverageInfo to mir::Body

Browse source 
This allows coverage information to be attached to the function as a whole when
appropriate, instead of being smuggled through coverage statements in the
function's basic blocks.

As an example, this patch moves the `function_source_hash` value out of
individual `CoverageKind::Counter` statements and into the per-function info.

When synthesizing unused functions for coverage purposes, the absence of this
info is taken to indicate that a function was not eligible for coverage and
should not be synthesized.
This commit is contained in:
Zalathar 2023-09-10 16:35:37 +10:00
parent 6d7160ce97
commit c479bc7f3b
7 changed files with 74 additions and 54 deletions
Download patch file Download diff file Expand all files Collapse all files

10
compiler/rustc_middle/src/mir/mod.rs
View file

@ -345,6 +345,14 @@ pub struct Body<'tcx> {
pub injection_phase: Option<MirPhase>,
pub tainted_by_errors: Option<ErrorGuaranteed>,
/// Per-function coverage information added by the `InstrumentCoverage`
/// pass, to be used in conjunction with the coverage statements injected
/// into this body's blocks.
///
/// If `-Cinstrument-coverage` is not active, or if an individual function
/// is not eligible for coverage, then this should always be `None`.
pub function_coverage_info: Option<Box<coverage::FunctionCoverageInfo>>,
}
impl<'tcx> Body<'tcx> {
@ -392,6 +400,7 @@ impl<'tcx> Body<'tcx> {
is_polymorphic: false,
injection_phase: None,
tainted_by_errors,
function_coverage_info: None,
};
body.is_polymorphic = body.has_non_region_param();
body
@ -420,6 +429,7 @@ impl<'tcx> Body<'tcx> {
is_polymorphic: false,
injection_phase: None,
tainted_by_errors: None,
function_coverage_info: None,
};
body.is_polymorphic = body.has_non_region_param();
body