a7bc1a2edf
Addresses Issue #78286 Libraries compiled with coverage and linked with out enabling coverage would fail when attempting to add the library's coverage statements to the codegen coverage context (None). Now, if coverage statements are encountered while compiling / linking with `-Z instrument-coverage` disabled, codegen will *not* attempt to add code regions to a coverage map, and it will not inject the LLVM instrprof_increment intrinsic calls.
36 lines
1.5 KiB
Rust
36 lines
1.5 KiB
Rust
use crate::traits::*;
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use rustc_middle::mir::coverage::*;
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use rustc_middle::mir::Coverage;
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use super::FunctionCx;
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impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
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pub fn codegen_coverage(&self, bx: &mut Bx, coverage: Coverage) {
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let Coverage { kind, code_region } = coverage;
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match kind {
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CoverageKind::Counter { function_source_hash, id } => {
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if bx.add_counter_region(self.instance, function_source_hash, id, code_region) {
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let coverageinfo = bx.tcx().coverageinfo(self.instance.def_id());
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let fn_name = bx.create_pgo_func_name_var(self.instance);
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let hash = bx.const_u64(function_source_hash);
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let num_counters = bx.const_u32(coverageinfo.num_counters);
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let id = bx.const_u32(u32::from(id));
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debug!(
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"codegen intrinsic instrprof.increment(fn_name={:?}, hash={:?}, num_counters={:?}, index={:?})",
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fn_name, hash, num_counters, id,
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);
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bx.instrprof_increment(fn_name, hash, num_counters, id);
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}
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}
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CoverageKind::Expression { id, lhs, op, rhs } => {
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bx.add_counter_expression_region(self.instance, id, lhs, op, rhs, code_region);
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}
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CoverageKind::Unreachable => {
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bx.add_unreachable_region(self.instance, code_region);
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}
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}
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}
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}
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