1 files changed, 69 insertions, 0 deletions
diff --git a/test/CodeGenObjC/gnu-init.m b/test/CodeGenObjC/gnu-init.m
new file mode 100644
index 000000000000..beb06bbe0df4
--- /dev/null
+++ b/test/CodeGenObjC/gnu-init.m
@@ -0,0 +1,69 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-freebsd -S -emit-llvm -fobjc-runtime=gnustep-2.0 -o - %s | FileCheck %s -check-prefix=CHECK-NEW
+// RUN: %clang_cc1 -triple x86_64-unknown-freebsd -S -emit-llvm -fobjc-runtime=gnustep-1.8 -o - %s | FileCheck %s -check-prefix=CHECK-OLD
+
+// Almost minimal Objective-C file, check that it emits calls to the correct
+// runtime entry points.
+@interface X @end
+@implementation X @end
+
+
+// Check that we emit a class ref
+// CHECK-NEW: @._OBJC_REF_CLASS_X 
+// CHECK-NEW-SAME: section "__objc_class_refs"
+
+// Check that we get a class ref to the defined class.
+// CHECK-NEW: @._OBJC_INIT_CLASS_X = global 
+// CHECK-NEW-SAME* @._OBJC_CLASS_X, section "__objc_classes"
+
+// Check that we emit the section start and end symbols as hidden globals.
+// CHECK-NEW: @__start___objc_selectors = external hidden global i8*
+// CHECK-NEW: @__stop___objc_selectors = external hidden global i8*
+// CHECK-NEW: @__start___objc_classes = external hidden global i8*
+// CHECK-NEW: @__stop___objc_classes = external hidden global i8*
+// CHECK-NEW: @__start___objc_class_refs = external hidden global i8*
+// CHECK-NEW: @__stop___objc_class_refs = external hidden global i8*
+// CHECK-NEW: @__start___objc_cats = external hidden global i8*
+// CHECK-NEW: @__stop___objc_cats = external hidden global i8*
+// CHECK-NEW: @__start___objc_protocols = external hidden global i8*
+// CHECK-NEW: @__stop___objc_protocols = external hidden global i8*
+// CHECK-NEW: @__start___objc_protocol_refs = external hidden global i8*
+// CHECK-NEW: @__stop___objc_protocol_refs = external hidden global i8*
+// CHECK-NEW: @__start___objc_class_aliases = external hidden global i8*
+// CHECK-NEW: @__stop___objc_class_aliases = external hidden global i8*
+// CHECK-NEW: @__start___objc_constant_string = external hidden global i8*
+// CHECK-NEW: @__stop___objc_constant_string = external hidden global i8*
+
+// Check that we emit the init structure correctly, including in a comdat.
+// CHECK-NEW: @.objc_init = linkonce_odr hidden global { i64, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8**, i8** } { i64 0, i8** @__start___objc_selectors, i8** @__stop___objc_selectors, i8** @__start___objc_classes, i8** @__stop___objc_classes, i8** @__start___objc_class_refs, i8** @__stop___objc_class_refs, i8** @__start___objc_cats, i8** @__stop___objc_cats, i8** @__start___objc_protocols, i8** @__stop___objc_protocols, i8** @__start___objc_protocol_refs, i8** @__stop___objc_protocol_refs, i8** @__start___objc_class_aliases, i8** @__stop___objc_class_aliases, i8** @__start___objc_constant_string, i8** @__stop___objc_constant_string }, comdat, align 8
+
+// Check that the load function is manually inserted into .ctors.
+// CHECK-NEW: @.objc_ctor = linkonce hidden constant void ()* @.objcv2_load_function, section ".ctors", comdat
+
+
+// Make sure that we provide null versions of everything so the __start /
+// __stop symbols work.
+// CHECK-NEW: @.objc_null_selector = linkonce_odr hidden global { i8*, i8* } zeroinitializer, section "__objc_selectors", comdat, align 8
+// CHECK-NEW: @.objc_null_category = linkonce_odr hidden global { i8*, i8*, i8*, i8*, i8*, i8*, i8* } zeroinitializer, section "__objc_cats", comdat, align 8
+// CHECK-NEW: @.objc_null_protocol = linkonce_odr hidden global { i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8* } zeroinitializer, section "__objc_protocols", comdat, align 8
+// CHECK-NEW: @.objc_null_protocol_ref = linkonce_odr hidden global { i8* } zeroinitializer, section "__objc_protocol_refs", comdat, align 8
+// CHECK-NEW: @.objc_null_class_alias = linkonce_odr hidden global { i8*, i8* } zeroinitializer, section "__objc_class_aliases", comdat, align 8
+// CHECK-NEW: @.objc_null_constant_string = linkonce_odr hidden global { i8*, i32, i32, i32, i32, i8* } zeroinitializer, section "__objc_constant_string", comdat, align 8
+// Make sure that the null symbols are not going to be removed, even by linking.
+// CHECK-NEW: @llvm.used = appending global [7 x i8*] [i8* bitcast ({ { i8*, i8*, i8*, i64, i64, i64, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i64, i8* }*, i8*, i8*, i64, i64, i64, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i64, i8* }** @._OBJC_INIT_CLASS_X to i8*), i8* bitcast ({ i8*, i8* }* @.objc_null_selector to i8*), i8* bitcast ({ i8*, i8*, i8*, i8*, i8*, i8*, i8* }* @.objc_null_category to i8*), i8* bitcast ({ i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8* }* @.objc_null_protocol to i8*), i8* bitcast ({ i8* }* @.objc_null_protocol_ref to i8*), i8* bitcast ({ i8*, i8* }* @.objc_null_class_alias to i8*), i8* bitcast ({ i8*, i32, i32, i32, i32, i8* }* @.objc_null_constant_string to i8*)], section "llvm.metadata"
+// Make sure that the load function and the reference to it are marked as used.
+// CHECK-NEW: @llvm.compiler.used = appending global [2 x i8*] [i8* bitcast (void ()* @.objcv2_load_function to i8*), i8* bitcast (void ()** @.objc_ctor to i8*)], section "llvm.metadata"
+
+// Check that we emit the load function in a comdat and that it does the right thing.
+// CHECK-NEW: define linkonce_odr hidden void @.objcv2_load_function() comdat {
+// CHECK-NEW-NEXT: entry:
+// CHECK-NEW-NEXT: call void @__objc_load(
+// CHECK-NEW-SAME: @.objc_init
+// CHECK-NEW-NEXT: ret void
+
+// CHECK-OLD: @4 = internal global { i64, i64, i8*, { i64, { i8*, i8* }*, i16, i16, [4 x i8*] }* } { i64 9, i64 32, i8* getelementptr inbounds ([{{[0-9]+}} x i8], [{{[0-9]+}} x i8]* @.objc_source_file_name, i64 0, i64 0), { i64, { i8*, i8* }*, i16, i16, [4 x i8*] }* @3 }, align 8
+// CHECK-OLD: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @.objc_load_function, i8* null }]
+
+// CHECK-OLD: define internal void @.objc_load_function() {
+// CHECK-OLD-NEXT: entry:
+// CHECK-OLD-NEXT: call void ({ i64, i64, i8*, { i64, { i8*, i8* }*, i16, i16, [4 x i8*] }* }*, ...) @__objc_exec_class({ i64, i64, i8*, { i64, { i8*, i8* }*, i16, i16, [4 x i8*] }* }* @4)
+