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coverage: Rename MC/DC conditions_num to num_conditions

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This value represents a quantity of conditions, not an ID, so the new spelling
is more appropriate.
This commit is contained in:
Zalathar
2024-05-30 13:16:07 +10:00
parent 23ea77b8ed
commit c671eaaaff
10 changed files with 34 additions and 33 deletions
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26
compiler/rustc_mir_build/src/build/coverageinfo/mcdc.rs
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@@ -10,12 +10,12 @@ use rustc_middle::ty::TyCtxt;
use rustc_span::Span;
use crate::build::Builder;
use crate::errors::MCDCExceedsConditionNumLimit;
use crate::errors::MCDCExceedsConditionLimit;
/// The MCDC bitmap scales exponentially (2^n) based on the number of conditions seen,
/// So llvm sets a maximum value prevents the bitmap footprint from growing too large without the user's knowledge.
/// This limit may be relaxed if the [upstream change](https://github.com/llvm/llvm-project/pull/82448) is merged.
const MAX_CONDITIONS_NUM_IN_DECISION: usize = 6;
const MAX_CONDITIONS_IN_DECISION: usize = 6;
#[derive(Default)]
struct MCDCDecisionCtx {
@@ -100,7 +100,7 @@ impl MCDCState {
}
None => decision_ctx.processing_decision.insert(MCDCDecisionSpan {
span,
conditions_num: 0,
num_conditions: 0,
end_markers: vec![],
decision_depth,
}),
@@ -108,14 +108,14 @@ impl MCDCState {
let parent_condition = decision_ctx.decision_stack.pop_back().unwrap_or_default();
let lhs_id = if parent_condition.condition_id == ConditionId::NONE {
decision.conditions_num += 1;
ConditionId::from(decision.conditions_num)
decision.num_conditions += 1;
ConditionId::from(decision.num_conditions)
} else {
parent_condition.condition_id
};
decision.conditions_num += 1;
let rhs_condition_id = ConditionId::from(decision.conditions_num);
decision.num_conditions += 1;
let rhs_condition_id = ConditionId::from(decision.num_conditions);
let (lhs, rhs) = match op {
LogicalOp::And => {
@@ -208,17 +208,17 @@ impl MCDCInfoBuilder {
// is empty, i.e. when all the conditions of the decision were instrumented,
// and the decision is "complete".
if let Some(decision) = decision_result {
match decision.conditions_num {
match decision.num_conditions {
0 => {
unreachable!("Decision with no condition is not expected");
}
1..=MAX_CONDITIONS_NUM_IN_DECISION => {
1..=MAX_CONDITIONS_IN_DECISION => {
self.decision_spans.push(decision);
}
_ => {
// Do not generate mcdc mappings and statements for decisions with too many conditions.
// Therefore, first erase the condition info of the (N-1) previous branch spans.
let rebase_idx = self.branch_spans.len() - (decision.conditions_num - 1);
let rebase_idx = self.branch_spans.len() - (decision.num_conditions - 1);
for branch in &mut self.branch_spans[rebase_idx..] {
branch.condition_info = None;
}
@@ -226,10 +226,10 @@ impl MCDCInfoBuilder {
// Then, erase this last branch span's info too, for a total of N.
condition_info = None;
tcx.dcx().emit_warn(MCDCExceedsConditionNumLimit {
tcx.dcx().emit_warn(MCDCExceedsConditionLimit {
span: decision.span,
conditions_num: decision.conditions_num,
max_conditions_num: MAX_CONDITIONS_NUM_IN_DECISION,
num_conditions: decision.num_conditions,
max_conditions: MAX_CONDITIONS_IN_DECISION,
});
}
}