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authorArtem Dergachev <artem.dergachev@gmail.com>2019-06-25 02:16:47 +0000
committerArtem Dergachev <artem.dergachev@gmail.com>2019-06-25 02:16:47 +0000
commitc48be7fc1cd3e45fbae1a96f54eb7b7666a29332 (patch)
tree487096cb4683f8be287a706546c9a50881605249 /clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
parent7939ba08ab42922a00b7f1b7e4761c7f9cc51f0c (diff)
downloadbcm5719-llvm-c48be7fc1cd3e45fbae1a96f54eb7b7666a29332.tar.gz
bcm5719-llvm-c48be7fc1cd3e45fbae1a96f54eb7b7666a29332.zip
[analyzer] Add more timers for performance profiling.
The -analyzer-stats flag now allows you to find out how much time was spent on AST-based analysis and on path-sensitive analysis and, separately, on bug visitors, as they're occasionally a performance problem on their own. The total timer wasn't useful because there's anyway a total time printed out. Remove it. Differential Revision: https://reviews.llvm.org/D63227 llvm-svn: 364266
Diffstat (limited to 'clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp')
-rw-r--r--clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp43
1 files changed, 34 insertions, 9 deletions
diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
index a75ff2563cf..454b61fd51a 100644
--- a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
+++ b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
@@ -196,7 +196,9 @@ public:
/// Time the analyzes time of each translation unit.
std::unique_ptr<llvm::TimerGroup> AnalyzerTimers;
- std::unique_ptr<llvm::Timer> TUTotalTimer;
+ std::unique_ptr<llvm::Timer> SyntaxCheckTimer;
+ std::unique_ptr<llvm::Timer> ExprEngineTimer;
+ std::unique_ptr<llvm::Timer> BugReporterTimer;
/// The information about analyzed functions shared throughout the
/// translation unit.
@@ -212,8 +214,13 @@ public:
if (Opts->PrintStats || Opts->ShouldSerializeStats) {
AnalyzerTimers = llvm::make_unique<llvm::TimerGroup>(
"analyzer", "Analyzer timers");
- TUTotalTimer = llvm::make_unique<llvm::Timer>(
- "time", "Analyzer total time", *AnalyzerTimers);
+ SyntaxCheckTimer = llvm::make_unique<llvm::Timer>(
+ "syntaxchecks", "Syntax-based analysis time", *AnalyzerTimers);
+ ExprEngineTimer = llvm::make_unique<llvm::Timer>(
+ "exprengine", "Path exploration time", *AnalyzerTimers);
+ BugReporterTimer = llvm::make_unique<llvm::Timer>(
+ "bugreporter", "Path-sensitive report post-processing time",
+ *AnalyzerTimers);
llvm::EnableStatistics(/* PrintOnExit= */ false);
}
}
@@ -346,8 +353,13 @@ public:
/// Handle callbacks for arbitrary Decls.
bool VisitDecl(Decl *D) {
AnalysisMode Mode = getModeForDecl(D, RecVisitorMode);
- if (Mode & AM_Syntax)
+ if (Mode & AM_Syntax) {
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->startTimer();
checkerMgr->runCheckersOnASTDecl(D, *Mgr, *RecVisitorBR);
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->stopTimer();
+ }
return true;
}
@@ -566,7 +578,11 @@ static bool isBisonFile(ASTContext &C) {
void AnalysisConsumer::runAnalysisOnTranslationUnit(ASTContext &C) {
BugReporter BR(*Mgr);
TranslationUnitDecl *TU = C.getTranslationUnitDecl();
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->startTimer();
checkerMgr->runCheckersOnASTDecl(TU, *Mgr, BR);
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->stopTimer();
// Run the AST-only checks using the order in which functions are defined.
// If inlining is not turned on, use the simplest function order for path
@@ -608,8 +624,6 @@ void AnalysisConsumer::HandleTranslationUnit(ASTContext &C) {
if (Diags.hasErrorOccurred() || Diags.hasFatalErrorOccurred())
return;
- if (TUTotalTimer) TUTotalTimer->startTimer();
-
if (isBisonFile(C)) {
reportAnalyzerProgress("Skipping bison-generated file\n");
} else if (Opts->DisableAllChecks) {
@@ -622,8 +636,6 @@ void AnalysisConsumer::HandleTranslationUnit(ASTContext &C) {
runAnalysisOnTranslationUnit(C);
}
- if (TUTotalTimer) TUTotalTimer->stopTimer();
-
// Count how many basic blocks we have not covered.
NumBlocksInAnalyzedFunctions = FunctionSummaries.getTotalNumBasicBlocks();
NumVisitedBlocksInAnalyzedFunctions =
@@ -747,8 +759,13 @@ void AnalysisConsumer::HandleCode(Decl *D, AnalysisMode Mode,
BugReporter BR(*Mgr);
- if (Mode & AM_Syntax)
+ if (Mode & AM_Syntax) {
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->startTimer();
checkerMgr->runCheckersOnASTBody(D, *Mgr, BR);
+ if (SyntaxCheckTimer)
+ SyntaxCheckTimer->stopTimer();
+ }
if ((Mode & AM_Path) && checkerMgr->hasPathSensitiveCheckers()) {
RunPathSensitiveChecks(D, IMode, VisitedCallees);
if (IMode != ExprEngine::Inline_Minimal)
@@ -775,8 +792,12 @@ void AnalysisConsumer::RunPathSensitiveChecks(Decl *D,
ExprEngine Eng(CTU, *Mgr, VisitedCallees, &FunctionSummaries, IMode);
// Execute the worklist algorithm.
+ if (ExprEngineTimer)
+ ExprEngineTimer->startTimer();
Eng.ExecuteWorkList(Mgr->getAnalysisDeclContextManager().getStackFrame(D),
Mgr->options.MaxNodesPerTopLevelFunction);
+ if (ExprEngineTimer)
+ ExprEngineTimer->stopTimer();
if (!Mgr->options.DumpExplodedGraphTo.empty())
Eng.DumpGraph(Mgr->options.TrimGraph, Mgr->options.DumpExplodedGraphTo);
@@ -786,7 +807,11 @@ void AnalysisConsumer::RunPathSensitiveChecks(Decl *D,
Eng.ViewGraph(Mgr->options.TrimGraph);
// Display warnings.
+ if (BugReporterTimer)
+ BugReporterTimer->startTimer();
Eng.getBugReporter().FlushReports();
+ if (BugReporterTimer)
+ BugReporterTimer->stopTimer();
}
//===----------------------------------------------------------------------===//
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