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-rw-r--r--include/clang/Basic/Attr.td5
-rw-r--r--lib/CodeGen/CodeGenModule.cpp3
-rw-r--r--lib/Sema/SemaDeclAttr.cpp17
-rw-r--r--test/CodeGen/attr-minsize.c26
-rw-r--r--test/CodeGen/attr-minsize.cpp75
-rw-r--r--test/CodeGenObjC/attr-minsize.m12
-rw-r--r--test/Sema/attr-minsize.c5
7 files changed, 117 insertions, 26 deletions
diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index 738b460b5a..bfe8093079 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -341,6 +341,11 @@ def Final : InheritableAttr {
let SemaHandler = 0;
}
+def MinSize : InheritableAttr {
+ let Spellings = [GNU<"minsize">];
+ let Subjects = [Function];
+}
+
def Format : InheritableAttr {
let Spellings = [GNU<"format">];
let Args = [StringArgument<"Type">, IntArgument<"FormatIdx">,
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 9617de8eb7..11991124ee 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -583,6 +583,9 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
if (D->hasAttr<ColdAttr>())
F->addFnAttr(llvm::Attributes::OptimizeForSize);
+ if (D->hasAttr<MinSizeAttr>())
+ F->addFnAttr(llvm::Attributes::MinSize);
+
if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D))
F->setUnnamedAddr(true);
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index df4757e4d2..6db30bea9d 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -1523,6 +1523,20 @@ static void handleAliasAttr(Sema &S, Decl *D, const AttributeList &Attr) {
Str->getString()));
}
+static void handleMinSizeAttr(Sema &S, Decl *D, const AttributeList &Attr) {
+ // Check the attribute arguments.
+ if (!checkAttributeNumArgs(S, Attr, 0))
+ return;
+
+ if (!isa<FunctionDecl>(D) && !isa<ObjCMethodDecl>(D)) {
+ S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
+ << Attr.getName() << ExpectedFunctionOrMethod;
+ return;
+ }
+
+ D->addAttr(::new (S.Context) MinSizeAttr(Attr.getRange(), S.Context));
+}
+
static void handleColdAttr(Sema &S, Decl *D, const AttributeList &Attr) {
// Check the attribute arguments.
if (!checkAttributeNumArgs(S, Attr, 0))
@@ -4285,6 +4299,9 @@ static void ProcessInheritableDeclAttr(Sema &S, Scope *scope, Decl *D,
case AttributeList::AT_ExtVectorType:
handleExtVectorTypeAttr(S, scope, D, Attr);
break;
+ case AttributeList::AT_MinSize:
+ handleMinSizeAttr(S, D, Attr);
+ break;
case AttributeList::AT_Format: handleFormatAttr (S, D, Attr); break;
case AttributeList::AT_FormatArg: handleFormatArgAttr (S, D, Attr); break;
case AttributeList::AT_CUDAGlobal: handleGlobalAttr (S, D, Attr); break;
diff --git a/test/CodeGen/attr-minsize.c b/test/CodeGen/attr-minsize.c
deleted file mode 100644
index dd260e43e0..0000000000
--- a/test/CodeGen/attr-minsize.c
+++ /dev/null
@@ -1,26 +0,0 @@
-// RUN: %clang_cc1 -Oz -emit-llvm %s -o - | FileCheck %s -check-prefix=Oz
-// RUN: %clang_cc1 -O0 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
-// RUN: %clang_cc1 -O1 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
-// RUN: %clang_cc1 -O2 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
-// RUN: %clang_cc1 -O3 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
-// RUN: %clang_cc1 -Os -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
-// Check that we set the minsize attribute on each function
-// when Oz optimization level is set.
-
-int test1() {
- return 42;
-// Oz: @test1{{.*}}minsize
-// Oz: ret
-// OTHER: @test1
-// OTHER-NOT: minsize
-// OTHER: ret
-}
-
-int test2() {
- return 42;
-// Oz: @test2{{.*}}minsize
-// Oz: ret
-// OTHER: @test2
-// OTHER-NOT: minsize
-// OTHER: ret
-}
diff --git a/test/CodeGen/attr-minsize.cpp b/test/CodeGen/attr-minsize.cpp
new file mode 100644
index 0000000000..a422a62f25
--- /dev/null
+++ b/test/CodeGen/attr-minsize.cpp
@@ -0,0 +1,75 @@
+// RUN: %clang_cc1 -Oz -emit-llvm %s -o - | FileCheck %s -check-prefix=Oz
+// RUN: %clang_cc1 -O0 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// RUN: %clang_cc1 -O1 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// RUN: %clang_cc1 -O2 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// RUN: %clang_cc1 -O3 -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// RUN: %clang_cc1 -Os -emit-llvm %s -o - | FileCheck %s -check-prefix=OTHER
+// Check that we set the minsize attribute on each function
+// when Oz optimization level is set.
+
+int test1() {
+ return 42;
+// Oz: @{{.*}}test1{{.*}}minsize
+// Oz: ret
+// OTHER: @{{.*}}test1
+// OTHER-NOT: minsize
+// OTHER: ret
+}
+
+int test2() {
+ return 42;
+// Oz: @{{.*}}test2{{.*}}minsize
+// Oz: ret
+// OTHER: @{{.*}}test2
+// OTHER-NOT: minsize
+// OTHER: ret
+}
+
+__attribute__((minsize))
+int test3() {
+ return 42;
+// Oz: @{{.*}}test3{{.*}}minsize
+// OTHER: @{{.*}}test3{{.*}}minsize
+}
+
+// Check that the minsize attribute is well propagated through
+// template instantiation
+
+template<typename T>
+__attribute__((minsize))
+void test4(T arg) {
+ return;
+}
+
+template
+void test4<int>(int arg);
+// Oz: define{{.*}}void @{{.*}}test4
+// Oz: minsize
+// OTHER: define{{.*}}void @{{.*}}test4
+// OTHER: minsize
+
+template
+void test4<float>(float arg);
+// Oz: define{{.*}}void @{{.*}}test4
+// Oz: minsize
+// OTHER: define{{.*}}void @{{.*}}test4
+// OTHER: minsize
+
+template<typename T>
+void test5(T arg) {
+ return;
+}
+
+template
+void test5<int>(int arg);
+// Oz: define{{.*}}void @{{.*}}test5
+// Oz: minsize
+// OTHER: define{{.*}}void @{{.*}}test5
+// OTHER-NOT: minsize
+
+template
+void test5<float>(float arg);
+// Oz: define{{.*}}void @{{.*}}test5
+// Oz: minsize
+// OTHER: define{{.*}}void @{{.*}}test5
+// OTHER-NOT: minsize
diff --git a/test/CodeGenObjC/attr-minsize.m b/test/CodeGenObjC/attr-minsize.m
new file mode 100644
index 0000000000..f46107eca6
--- /dev/null
+++ b/test/CodeGenObjC/attr-minsize.m
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+
+@interface Test
+- (void)test;
+@end
+
+@implementation Test
+- (void)test __attribute__((minsize)) {
+ // CHECK: define{{.*}}Test test
+ // CHECK: minsize
+}
+@end
diff --git a/test/Sema/attr-minsize.c b/test/Sema/attr-minsize.c
new file mode 100644
index 0000000000..7b1c6ae66f
--- /dev/null
+++ b/test/Sema/attr-minsize.c
@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+int foo() __attribute__((__minsize__));
+
+int var1 __attribute__((__minsize__)); // expected-error{{'__minsize__' attribute only applies to functions and methods}}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-08-04 13:21:28 +0000