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use gccjit::RValue;
use rustc_codegen_ssa::traits::{CoverageInfoBuilderMethods, CoverageInfoMethods};
use rustc_hir::def_id::DefId;
use rustc_middle::mir::coverage::{
CodeRegion,
CounterValueReference,
ExpressionOperandId,
InjectedExpressionId,
Op,
};
use rustc_middle::ty::Instance;
use crate::builder::Builder;
use crate::context::CodegenCx;
impl<'a, 'gcc, 'tcx> CoverageInfoBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
fn set_function_source_hash(
&mut self,
_instance: Instance<'tcx>,
_function_source_hash: u64,
) -> bool {
unimplemented!();
}
fn add_coverage_counter(&mut self, _instance: Instance<'tcx>, _id: CounterValueReference, _region: CodeRegion) -> bool {
// TODO(antoyo)
false
}
fn add_coverage_counter_expression(&mut self, _instance: Instance<'tcx>, _id: InjectedExpressionId, _lhs: ExpressionOperandId, _op: Op, _rhs: ExpressionOperandId, _region: Option<CodeRegion>) -> bool {
// TODO(antoyo)
false
}
fn add_coverage_unreachable(&mut self, _instance: Instance<'tcx>, _region: CodeRegion) -> bool {
// TODO(antoyo)
false
}
}
impl<'gcc, 'tcx> CoverageInfoMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
fn coverageinfo_finalize(&self) {
// TODO(antoyo)
}
fn get_pgo_func_name_var(&self, _instance: Instance<'tcx>) -> RValue<'gcc> {
unimplemented!();
}
/// Functions with MIR-based coverage are normally codegenned _only_ if
/// called. LLVM coverage tools typically expect every function to be
/// defined (even if unused), with at least one call to LLVM intrinsic
/// `instrprof.increment`.
///
/// Codegen a small function that will never be called, with one counter
/// that will never be incremented.
///
/// For used/called functions, the coverageinfo was already added to the
/// `function_coverage_map` (keyed by function `Instance`) during codegen.
/// But in this case, since the unused function was _not_ previously
/// codegenned, collect the coverage `CodeRegion`s from the MIR and add
/// them. The first `CodeRegion` is used to add a single counter, with the
/// same counter ID used in the injected `instrprof.increment` intrinsic
/// call. Since the function is never called, all other `CodeRegion`s can be
/// added as `unreachable_region`s.
fn define_unused_fn(&self, _def_id: DefId) {
unimplemented!();
}
}
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