fanfuqiang updated this revision to Diff 310865.
fanfuqiang marked 2 inline comments as done.
fanfuqiang added a comment.
update testcase take advise of reviewers.
fix conflict testcase fail, less warnning only for hasNonTrivialCopyConstructor
.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D92956/new/
https://reviews.llvm.org/D92956
Files:
clang/lib/Sema/SemaStmt.cpp
clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
clang/test/SemaCXX/warn-range-loop-analysis.cpp
Index: clang/test/SemaCXX/warn-range-loop-analysis.cpp
===
--- clang/test/SemaCXX/warn-range-loop-analysis.cpp
+++ clang/test/SemaCXX/warn-range-loop-analysis.cpp
@@ -29,6 +29,13 @@
operator int();
};
+struct ID1 {
+ // Small trivally copy constructor, but no trivally copy assignment
+ // operator.
+ ID1(ID1 const&) = default;
+ ID1& operator=(ID1 const& other) { return *this; }
+};
+
// Testing notes:
// test0 checks that the full text of the warnings and notes is correct. The
// rest of the tests checks a smaller portion of the text.
@@ -455,6 +462,14 @@
// CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:17-[[@LINE-3]]:18}:" "
}
+void test11() {
+ Container C;
+
+ for (const ID1 x : C) {}
+ // No warning
+}
+
+
template
void test_template_function() {
// In a template instantiation the diagnostics should not be emitted for
Index: clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
===
--- clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
+++ clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
@@ -55,8 +55,6 @@
int b;
};
- // expected-warning@+3 {{loop variable 'r' creates a copy from type 'const
Record'}}
- // expected-note@+2 {{use reference type 'const Record &' to prevent
copying}}
Record records[8];
for (const auto r : records)
(void)r;
Index: clang/lib/Sema/SemaStmt.cpp
===
--- clang/lib/Sema/SemaStmt.cpp
+++ clang/lib/Sema/SemaStmt.cpp
@@ -2855,8 +2855,14 @@
// diagnostic for these instances. 64 bytes is a common size of a cache line.
// (The function `getTypeSize` returns the size in bits.)
ASTContext &Ctx = SemaRef.Context;
+ const CXXRecordDecl *ClassDecl = nullptr;
+ if (const auto *RT = VariableType->getAs()) {
+ClassDecl = dyn_cast(RT->getDecl());
+ }
if (Ctx.getTypeSize(VariableType) <= 64 * 8 &&
(VariableType.isTriviallyCopyableType(Ctx) ||
+ // Fix https://bugs.llvm.org/show_bug.cgi?id=48011
+ (ClassDecl && !ClassDecl->hasNonTrivialCopyConstructor()) ||
hasTrivialABIAttr(VariableType)))
return;
Index: clang/test/SemaCXX/warn-range-loop-analysis.cpp
===
--- clang/test/SemaCXX/warn-range-loop-analysis.cpp
+++ clang/test/SemaCXX/warn-range-loop-analysis.cpp
@@ -29,6 +29,13 @@
operator int();
};
+struct ID1 {
+ // Small trivally copy constructor, but no trivally copy assignment
+ // operator.
+ ID1(ID1 const&) = default;
+ ID1& operator=(ID1 const& other) { return *this; }
+};
+
// Testing notes:
// test0 checks that the full text of the warnings and notes is correct. The
// rest of the tests checks a smaller portion of the text.
@@ -455,6 +462,14 @@
// CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:17-[[@LINE-3]]:18}:" "
}
+void test11() {
+ Container C;
+
+ for (const ID1 x : C) {}
+ // No warning
+}
+
+
template
void test_template_function() {
// In a template instantiation the diagnostics should not be emitted for
Index: clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
===
--- clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
+++ clang/test/SemaCXX/warn-range-loop-analysis-trivially-copyable.cpp
@@ -55,8 +55,6 @@
int b;
};
- // expected-warning@+3 {{loop variable 'r' creates a copy from type 'const Record'}}
- // expected-note@+2 {{use reference type 'const Record &' to prevent copying}}
Record records[8];
for (const auto r : records)
(void)r;
Index: clang/lib/Sema/SemaStmt.cpp
===
--- clang/lib/Sema/SemaStmt.cpp
+++ clang/lib/Sema/SemaStmt.cpp
@@ -2855,8 +2855,14 @@
// diagnostic for these instances. 64 bytes is a common size of a cache line.
// (The function `getTypeSize` returns the size in bits.)
ASTContext &Ctx = SemaRef.Context;
+ const CXXRecordDecl *ClassDecl = nullptr;
+ if (const auto *RT = VariableType->getAs()) {
+ClassDecl = dyn_cast(RT->getDecl());
+ }
if (Ctx.getTypeSize(VariableType) <= 64 * 8 &&
(VariableType.isTriviallyCopyableType(Ctx) ||
+ // Fix https://bugs.llvm.org/show_bug.cgi?id=48011
+ (ClassD
