Add a test for the Objective-C garbage collection metadata stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150626 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 119 insertions, 0 deletions

diff --git a/test/Linker/image-info-a.ll b/test/Linker/image-info-a.ll
new file mode 100644
index 0000000000..a4c9fb85f3
--- /dev/null
+++ b/test/Linker/image-info-a.ll
@@ -0,0 +1,58 @@
+; RUN: llvm-link %s %p/image-info-b.ll -S -o - | FileCheck %s
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.8.0"
+
+%0 = type opaque
+%struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }
+%struct._objc_cache = type opaque
+%struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }
+%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }
+%struct._objc_method = type { i8*, i8*, i8* }
+%struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }
+%struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32, i8** }
+%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }
+%struct._prop_t = type { i8*, i8* }
+%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }
+%struct._ivar_t = type { i64*, i8*, i8*, i32, i32 }
+%struct._message_ref_t = type { i8*, i8* }
+
+@"OBJC_CLASS_$_NSAutoreleasePool" = external global %struct._class_t
+@"\01L_OBJC_CLASSLIST_REFERENCES_$_" = internal global %struct._class_t* @"OBJC_CLASS_$_NSAutoreleasePool", section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
+@"\01L_OBJC_METH_VAR_NAME_" = internal global [6 x i8] c"alloc\00", section "__TEXT,__objc_methname,cstring_literals", align 1
+@"\01l_objc_msgSend_fixup_alloc" = weak hidden global { i8* (i8*, %struct._message_ref_t*, ...)*, i8* } { i8* (i8*, %struct._message_ref_t*, ...)* @objc_msgSend_fixup, i8* getelementptr inbounds ([6 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0) }, section "__DATA, __objc_msgrefs, coalesced", align 16
+@"\01L_OBJC_METH_VAR_NAME_1" = internal global [5 x i8] c"init\00", section "__TEXT,__objc_methname,cstring_literals", align 1
+@"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_1", i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
+@llvm.used = appending global [4 x i8*] [i8* bitcast (%struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_" to i8*), i8* getelementptr inbounds ([6 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_1", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*)], section "llvm.metadata"
+
+define %0* @_Z3foov() uwtable ssp {
+entry:
+  %0 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_"
+  %1 = bitcast %struct._class_t* %0 to i8*
+  %msgSend_fn = load i8** getelementptr inbounds (%struct._message_ref_t* bitcast ({ i8* (i8*, %struct._message_ref_t*, ...)*, i8* }* @"\01l_objc_msgSend_fixup_alloc" to %struct._message_ref_t*), i32 0, i32 0)
+  %2 = bitcast i8* %msgSend_fn to i8* (i8*, %struct._message_ref_t*)*
+  %call = call i8* %2(i8* %1, %struct._message_ref_t* bitcast ({ i8* (i8*, %struct._message_ref_t*, ...)*, i8* }* @"\01l_objc_msgSend_fixup_alloc" to %struct._message_ref_t*))
+  %3 = bitcast i8* %call to %0*
+  %4 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", !invariant.load !4
+  %5 = bitcast %0* %3 to i8*
+  %call1 = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %5, i8* %4)
+  %6 = bitcast i8* %call1 to %0*
+  ret %0* %6
+}
+
+declare i8* @objc_msgSend_fixup(i8*, %struct._message_ref_t*, ...)
+
+declare i8* @objc_msgSend(i8*, i8*, ...)
+
+; CHECK: !llvm.module.flags = !{!0, !1, !2, !3}
+; CHECK: !0 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
+; CHECK: !1 = metadata !{i32 1, metadata !"Objective-C Image Info Version", i32 0}
+; CHECK: !2 = metadata !{i32 1, metadata !"Objective-C Image Info Section", metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
+; CHECK: !3 = metadata !{i32 1, metadata !"Objective-C Garbage Collection", i32 2}
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+
+!0 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
+!1 = metadata !{i32 1, metadata !"Objective-C Image Info Version", i32 0}
+!2 = metadata !{i32 1, metadata !"Objective-C Image Info Section", metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
+!3 = metadata !{i32 1, metadata !"Objective-C Garbage Collection", i32 2}
+!4 = metadata !{}
diff --git a/test/Linker/image-info-b.ll b/test/Linker/image-info-b.ll
new file mode 100644
index 0000000000..2637749ae8
--- /dev/null
+++ b/test/Linker/image-info-b.ll
@@ -0,0 +1,61 @@
+; RUN: true
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.8.0"
+
+%0 = type opaque
+%struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }
+%struct._objc_cache = type opaque
+%struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }
+%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }
+%struct._objc_method = type { i8*, i8*, i8* }
+%struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }
+%struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32, i8** }
+%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }
+%struct._prop_t = type { i8*, i8* }
+%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }
+%struct._ivar_t = type { i64*, i8*, i8*, i32, i32 }
+%struct._message_ref_t = type { i8*, i8* }
+
+@"OBJC_CLASS_$_NSAutoreleasePool" = external global %struct._class_t
+@"\01L_OBJC_CLASSLIST_REFERENCES_$_" = internal global %struct._class_t* @"OBJC_CLASS_$_NSAutoreleasePool", section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
+@"\01L_OBJC_METH_VAR_NAME_" = internal global [6 x i8] c"alloc\00", section "__TEXT,__objc_methname,cstring_literals", align 1
+@"\01l_objc_msgSend_fixup_alloc" = weak hidden global { i8* (i8*, %struct._message_ref_t*, ...)*, i8* } { i8* (i8*, %struct._message_ref_t*, ...)* @objc_msgSend_fixup, i8* getelementptr inbounds ([6 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0) }, section "__DATA, __objc_msgrefs, coalesced", align 16
+@"\01L_OBJC_METH_VAR_NAME_1" = internal global [5 x i8] c"init\00", section "__TEXT,__objc_methname,cstring_literals", align 1
+@"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_1", i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
+@llvm.used = appending global [4 x i8*] [i8* bitcast (%struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_" to i8*), i8* getelementptr inbounds ([6 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_1", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*)], section "llvm.metadata"
+
+define i32 @main() uwtable ssp {
+entry:
+  %retval = alloca i32, align 4
+  %pool = alloca %0*, align 8
+  %pond = alloca %0*, align 8
+  store i32 0, i32* %retval
+  %0 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_"
+  %1 = bitcast %struct._class_t* %0 to i8*
+  %msgSend_fn = load i8** getelementptr inbounds (%struct._message_ref_t* bitcast ({ i8* (i8*, %struct._message_ref_t*, ...)*, i8* }* @"\01l_objc_msgSend_fixup_alloc" to %struct._message_ref_t*), i32 0, i32 0)
+  %2 = bitcast i8* %msgSend_fn to i8* (i8*, %struct._message_ref_t*)*
+  %call = call i8* %2(i8* %1, %struct._message_ref_t* bitcast ({ i8* (i8*, %struct._message_ref_t*, ...)*, i8* }* @"\01l_objc_msgSend_fixup_alloc" to %struct._message_ref_t*))
+  %3 = bitcast i8* %call to %0*
+  %4 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", !invariant.load !4
+  %5 = bitcast %0* %3 to i8*
+  %call1 = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %5, i8* %4)
+  %6 = bitcast i8* %call1 to %0*
+  store %0* %6, %0** %pool, align 8
+  %call2 = call %0* @_Z3foov()
+  store %0* %call2, %0** %pond, align 8
+  ret i32 0
+}
+
+declare i8* @objc_msgSend_fixup(i8*, %struct._message_ref_t*, ...)
+
+declare i8* @objc_msgSend(i8*, i8*, ...)
+
+declare %0* @_Z3foov()
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+
+!0 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
+!1 = metadata !{i32 1, metadata !"Objective-C Image Info Version", i32 0}
+!2 = metadata !{i32 1, metadata !"Objective-C Image Info Section", metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
+!3 = metadata !{i32 1, metadata !"Objective-C Garbage Collection", i32 2}
+!4 = metadata !{}