rafauler updated this revision to Diff 182581.
rafauler added a comment.
Removing facebook tags
Repository:
rC Clang
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D56928/new/
https://reviews.llvm.org/D56928
Files:
lib/Sema/SemaTemplateInstantiateDecl.cpp
test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp
Index: test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp
===================================================================
--- /dev/null
+++ test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -O0 -o - %s \
+// RUN: | FileCheck %s
+
+#define USED __attribute__((used))
+
+namespace InstantiateUsedMemberDefinition {
+ template <typename T> struct S {
+ int USED f() {
+ return 0;
+ }
+ };
+
+ void test() {
+ // Check that InstantiateUsedMemberDefinition::S<int>::f() is defined
+ // as a result of the S class template implicit instantiation
+ // CHECK-DAG: define linkonce_odr i32
@_ZN31InstantiateUsedMemberDefinition1SIiE1fEv
+ S<int> inst;
+ }
+}
Index: lib/Sema/SemaTemplateInstantiateDecl.cpp
===================================================================
--- lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2176,6 +2176,22 @@
Owner->addDecl(Method);
}
+ // PR17480: Honor the used attribute to instantiate member function
+ // definitions
+ if (Method->hasAttr<UsedAttr>()) {
+ if (auto *A = dyn_cast<CXXRecordDecl>(Owner)) {
+ SourceLocation Loc;
+ if (MemberSpecializationInfo *MSInfo = A->getMemberSpecializationInfo())
{
+ Loc = MSInfo->getPointOfInstantiation();
+ } else if (ClassTemplateSpecializationDecl *Spec =
+ dyn_cast<ClassTemplateSpecializationDecl>(A)) {
+ Loc = Spec->getPointOfInstantiation();
+ }
+
+ SemaRef.MarkFunctionReferenced(Loc, Method, /*MightBeOdrUse=*/true);
+ }
+ }
+
return Method;
}
Index: test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp
===================================================================
--- /dev/null
+++ test/CodeGenCXX/attr-used-member-function-implicit-instantiation.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -O0 -o - %s \
+// RUN: | FileCheck %s
+
+#define USED __attribute__((used))
+
+namespace InstantiateUsedMemberDefinition {
+ template <typename T> struct S {
+ int USED f() {
+ return 0;
+ }
+ };
+
+ void test() {
+ // Check that InstantiateUsedMemberDefinition::S<int>::f() is defined
+ // as a result of the S class template implicit instantiation
+ // CHECK-DAG: define linkonce_odr i32 @_ZN31InstantiateUsedMemberDefinition1SIiE1fEv
+ S<int> inst;
+ }
+}
Index: lib/Sema/SemaTemplateInstantiateDecl.cpp
===================================================================
--- lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2176,6 +2176,22 @@
Owner->addDecl(Method);
}
+ // PR17480: Honor the used attribute to instantiate member function
+ // definitions
+ if (Method->hasAttr<UsedAttr>()) {
+ if (auto *A = dyn_cast<CXXRecordDecl>(Owner)) {
+ SourceLocation Loc;
+ if (MemberSpecializationInfo *MSInfo = A->getMemberSpecializationInfo()) {
+ Loc = MSInfo->getPointOfInstantiation();
+ } else if (ClassTemplateSpecializationDecl *Spec =
+ dyn_cast<ClassTemplateSpecializationDecl>(A)) {
+ Loc = Spec->getPointOfInstantiation();
+ }
+
+ SemaRef.MarkFunctionReferenced(Loc, Method, /*MightBeOdrUse=*/true);
+ }
+ }
+
return Method;
}
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