[PATCH] D159479: [ASTImport]enhance statement comparing

[Qizhi Hu via Phabricator via cfe-commits]

jcsxky created this revision.
jcsxky added projects: clang, clang-c.
Herald added a subscriber: martong.
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jcsxky requested review of this revision.
Herald added a subscriber: cfe-commits.

Return statement comparing should consider return value.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D159479

Files:
  clang/lib/AST/ASTStructuralEquivalence.cpp
  clang/unittests/AST/StructuralEquivalenceTest.cpp


Index: clang/unittests/AST/StructuralEquivalenceTest.cpp
===================================================================
--- clang/unittests/AST/StructuralEquivalenceTest.cpp
+++ clang/unittests/AST/StructuralEquivalenceTest.cpp
@@ -1798,6 +1798,25 @@
       TU, cxxRecordDecl(hasName("B"), unless(isImplicit())))));
 }
 
+TEST_F(StructuralEquivalenceCacheTest, ReturnStmtNonEq) {
+  auto TU = makeTuDecls(
+      R"(
+      bool x(){ return true; }
+      )",
+      R"(
+      bool x(){ return false; }
+      )",
+      Lang_CXX03);
+
+  StructuralEquivalenceContext Ctx(
+      get<0>(TU)->getASTContext(), get<1>(TU)->getASTContext(),
+      NonEquivalentDecls, StructuralEquivalenceKind::Default, false, false);
+
+  auto X = findDeclPair<FunctionDecl>(TU, functionDecl(hasName("x")));
+  EXPECT_FALSE(Ctx.IsEquivalent(X.first->getBody(), X.second->getBody()));
+
+}
+
 TEST_F(StructuralEquivalenceCacheTest, SpecialNonEq) {
   auto TU = makeTuDecls(
       R"(
Index: clang/lib/AST/ASTStructuralEquivalence.cpp
===================================================================
--- clang/lib/AST/ASTStructuralEquivalence.cpp
+++ clang/lib/AST/ASTStructuralEquivalence.cpp
@@ -366,6 +366,10 @@
     return true;
   }
 
+  bool IsStmtEquivalent(const CXXBoolLiteralExpr *E1, const CXXBoolLiteralExpr *E2) {
+    return E1->getValue() == E2->getValue();
+  }
+
   /// End point of the traversal chain.
   bool TraverseStmt(const Stmt *S1, const Stmt *S2) { return true; }
 


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