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[clang][analyzer] Record entry-point CFG size in per-entry-point metrics #163351

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Merged
merged 1 commit into from
Oct 17, 2025
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[clang][analyzer] Record entry-point CFG size in per-entry-point metrics #163351

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10 changes: 8 additions & 2 deletions clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,9 @@ ALWAYS_ENABLED_STATISTIC(
"The # of visited basic blocks in the analyzed functions.");
ALWAYS_ENABLED_STATISTIC(PercentReachableBlocks,
"The % of reachable basic blocks.");
STAT_MAX(MaxCFGSize, "The maximum number of basic blocks in a function.");
ALWAYS_ENABLED_STATISTIC(MaxCFGSize,
"The maximum number of basic blocks in a function.");
static UnsignedEPStat CFGSize("CFGSize");
//===----------------------------------------------------------------------===//
// AnalysisConsumer declaration.
//===----------------------------------------------------------------------===//
Expand Down Expand Up @@ -783,15 +785,19 @@ void AnalysisConsumer::HandleCode(Decl *D, AnalysisMode Mode,
void AnalysisConsumer::RunPathSensitiveChecks(Decl *D,
ExprEngine::InliningModes IMode,
SetOfConstDecls *VisitedCallees) {
auto *CFG = Mgr->getCFG(D);

// Construct the analysis engine. First check if the CFG is valid.
// FIXME: Inter-procedural analysis will need to handle invalid CFGs.
if (!Mgr->getCFG(D))
if (!CFG)
return;

// See if the LiveVariables analysis scales.
if (!Mgr->getAnalysisDeclContext(D)->getAnalysis<RelaxedLiveVariables>())
return;

CFGSize.set(CFG->size());

ExprEngine Eng(CTU, *Mgr, VisitedCallees, &FunctionSummaries, IMode);

// Execute the worklist algorithm.
Expand Down
4 changes: 2 additions & 2 deletions clang/test/Analysis/analyzer-stats/entry-point-stats.cpp
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Expand Up @@ -8,9 +8,9 @@
// CHECK-NEXT: "c:@F@fib#i#": {
// CHECK-NEXT: "File": "{{.*}}entry-point-stats.cpp",
// CHECK-NEXT: "DebugName": "fib(unsigned int)",
// CHECK-NEXT: "CFGSize": "5",
// CHECK-NEXT: "PathRunningTime": "{{[0-9]+}}",
// CHECK-NEXT: "MaxBugClassSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxCFGSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxQueueSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxReachableSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxTimeSpentSolvingZ3Queries": "{{[0-9]+}}",
Expand Down Expand Up @@ -45,9 +45,9 @@
// CHECK-NEXT: "c:@F@main#I#**C#": {
// CHECK-NEXT: "File": "{{.*}}entry-point-stats.cpp",
// CHECK-NEXT: "DebugName": "main(int, char **)",
// CHECK-NEXT: "CFGSize": "3",
// CHECK-NEXT: "PathRunningTime": "{{[0-9]+}}",
// CHECK-NEXT: "MaxBugClassSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxCFGSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxQueueSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxReachableSize": "{{[0-9]+}}",
// CHECK-NEXT: "MaxTimeSpentSolvingZ3Queries": "{{[0-9]+}}",
Expand Down