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[clang][analysis] Fix flaky clang/test/Analysis/live-stmts.cpp test #126913

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Merged
merged 1 commit into from
Feb 12, 2025
Merged

[clang][analysis] Fix flaky clang/test/Analysis/live-stmts.cpp test #126913

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11 changes: 10 additions & 1 deletion clang/lib/Analysis/LiveVariables.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,9 @@
#include "clang/Analysis/AnalysisDeclContext.h"
#include "clang/Analysis/CFG.h"
#include "clang/Analysis/FlowSensitive/DataflowWorklist.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <optional>
Expand Down Expand Up @@ -662,12 +664,19 @@ void LiveVariables::dumpExprLiveness(const SourceManager &M) {
}

void LiveVariablesImpl::dumpExprLiveness(const SourceManager &M) {
auto ByBeginLoc = [&M](const Expr *L, const Expr *R) {
return M.isBeforeInTranslationUnit(L->getBeginLoc(), R->getBeginLoc());
};

// Don't iterate over blockEndsToLiveness directly because it's not sorted.
for (const CFGBlock *B : *analysisContext.getCFG()) {

llvm::errs() << "\n[ B" << B->getBlockID()
<< " (live expressions at block exit) ]\n";
for (const Expr *E : blocksEndToLiveness[B].liveExprs) {
std::vector<const Expr *> LiveExprs;
llvm::append_range(LiveExprs, blocksEndToLiveness[B].liveExprs);
llvm::sort(LiveExprs, ByBeginLoc);
for (const Expr *E : LiveExprs) {
llvm::errs() << "\n";
E->dump();
}
Expand Down
45 changes: 22 additions & 23 deletions clang/test/Analysis/live-stmts.cpp
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Original file line number Diff line number Diff line change
@@ -1,6 +1,3 @@
// Flaky on aarch64: http://llvm.org/PR126619
// UNSUPPORTED: target=aarch64{{.*}}

// RUN: %clang_analyze_cc1 -w -analyzer-checker=debug.DumpLiveExprs %s 2>&1\
// RUN: | FileCheck %s

Expand Down Expand Up @@ -29,34 +26,36 @@ int testThatDumperWorks(int x, int y, int z) {
// CHECK-EMPTY:
// CHECK: [ B2 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'y' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'z' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: ImplicitCastExpr {{.*}} <IntegralToBoolean>
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} <LValueToRValue>
// CHECK-NEXT: `-DeclRefExpr {{.*}} 'x' 'int'
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK: [ B3 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'y' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'z' 'int'
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK: [ B3 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: ImplicitCastExpr {{.*}} <IntegralToBoolean>
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} <LValueToRValue>
// CHECK-NEXT: `-DeclRefExpr {{.*}} 'x' 'int'
// CHECK: [ B4 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'y' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'z' 'int'
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK: [ B4 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: ImplicitCastExpr {{.*}} <IntegralToBoolean>
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} <LValueToRValue>
// CHECK-NEXT: `-DeclRefExpr {{.*}} 'x' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'y' 'int'
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'z' 'int'
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK: [ B5 (live expressions at block exit) ]
// CHECK-EMPTY:
Expand Down Expand Up @@ -226,15 +225,15 @@ int logicalOpInTernary(bool b) {
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: BinaryOperator {{.*}} '_Bool' '||'
// CHECK: |-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: | `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK: `-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 0
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 1
Expand All @@ -245,15 +244,15 @@ int logicalOpInTernary(bool b) {
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: BinaryOperator {{.*}} '_Bool' '||'
// CHECK: |-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: | `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK: `-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 0
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 1
Expand All @@ -264,15 +263,15 @@ int logicalOpInTernary(bool b) {
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: BinaryOperator {{.*}} '_Bool' '||'
// CHECK: |-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: | `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK: `-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 0
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 1
Expand All @@ -283,15 +282,15 @@ int logicalOpInTernary(bool b) {
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: BinaryOperator {{.*}} '_Bool' '||'
// CHECK: |-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: | `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK: `-ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: ImplicitCastExpr {{.*}} '_Bool' <LValueToRValue>
// CHECK: `-DeclRefExpr {{.*}} '_Bool' lvalue ParmVar {{.*}} 'b' '_Bool'
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 0
// CHECK-EMPTY:
// CHECK: IntegerLiteral {{.*}} 'int' 1
Expand Down