[NFC] Reorganize test file

Author: beccadax

test/IRGen/objc_implementation.swift

@@ -2,6 +2,10 @@
 // RUN: %FileCheck --input-file %t.ir %s
 // RUN: %FileCheck --input-file %t.ir --check-prefix NEGATIVE %s
 
+//
+// @_objcImplementation class
+//
+
 // Metaclass
 // CHECK: @"OBJC_METACLASS_$_ImplClass" = global %objc_class { %objc_class* @"OBJC_METACLASS_$_NSObject", %objc_class* @"OBJC_METACLASS_$_NSObject", %swift.opaque* @_objc_empty_cache, %swift.opaque* null, i64 ptrtoint ({ i32, i32, i32, i32, i8*, i8*, i8*, i8*, i8*, i8*, i8* }* [[_METACLASS_DATA_ImplClass:@[^, ]+]] to i64) }, align 8
 // CHECK: [[OBJC_CLASS_NAME_:@[^, ]+]] = private unnamed_addr constant [10 x i8] c"ImplClass\00"
@@ -15,12 +19,22 @@
 // CHECK: [[_DATA_ImplClass:@[^, ]+]] = internal constant { i32, i32, i32, i32, i8*, i8*, { i32, i32, [1 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8* } { i32 128, i32 8, i32 8, i32 0, i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* [[OBJC_CLASS_NAME_]], i64 0, i64 0), { i32, i32, [1 x { i8*, i8*, i8* }] }* [[_INSTANCE_METHODS_ImplClass]], i8* null, i8* null, i8* null, i8* null }, section "__DATA, __objc_data", align 8
 // CHECK: @"OBJC_CLASS_$_ImplClass" = global <{ i64, %objc_class*, %swift.opaque*, %swift.opaque*, { i32, i32, i32, i32, i8*, i8*, { i32, i32, [1 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8* }* }> <{ i64 ptrtoint (%objc_class* @"OBJC_METACLASS_$_ImplClass" to i64), %objc_class* @"OBJC_CLASS_$_NSObject", %swift.opaque* @_objc_empty_cache, %swift.opaque* null, { i32, i32, i32, i32, i8*, i8*, { i32, i32, [1 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8* }* [[_DATA_ImplClass]] }>, section "__DATA,__objc_data, regular", align 8
 
+// Swift metadata
+// NEGATIVE-NOT: OBJC_CLASS_$_ImplClass.{{[0-9]}}
+// NEGATIVE-NOT: $sSo9ImplClassCMn
+// NEGATIVE-NOT: $sSo9ImplClassCHn
+// NEGATIVE-NOT: $sSo9ImplClassCN
+// NEGATIVE-NOT: $sSo9ImplClassCMf
 @_objcImplementation extension ImplClass {
   @objc func mainMethod(_: Int32) {
     print("mainMethod")
   }
 }
 
+//
+// @_objcImplementation category
+//
+
 // Category1
 // CHECK: [[OBJC_CLASS_NAME_2:@[^, ]+]] = private unnamed_addr constant [10 x i8] c"Category1\00"
 // CHECK: [[selector_data_category1Method_:@[^, ]+]] = private global [17 x i8] c"category1Method:\00", section "__TEXT,__objc_methname,cstring_literals", align 1
@@ -32,16 +46,24 @@
   }
 }
 
+//
+// Epilogue
+//
+
 // CHECK: @"objc_classes_OBJC_CLASS_$_ImplClass" = internal global i8* bitcast (<{ i64, %objc_class*, %swift.opaque*, %swift.opaque*, { i32, i32, i32, i32, i8*, i8*, { i32, i32, [1 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8* }* }>* @"OBJC_CLASS_$_ImplClass" to i8*), section "__DATA,__objc_classlist,regular,no_dead_strip", align 8
 // CHECK: @objc_categories = internal global [1 x i8*] [i8* bitcast ({ i8*, %objc_class*, { i32, i32, [1 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8*, i32 }* [[_CATEGORY_ImplClass_Category1]] to i8*)], section "__DATA,__objc_catlist,regular,no_dead_strip", align 8
 
+
+//
+// Functions
+//
+
 // CHECK: define internal void @"$sSo9ImplClassC19objc_implementationE10mainMethodyys5Int32VFTo"
 // CHECK: define internal void @"$sSo9ImplClassC19objc_implementationE15category1Methodyys5Int32VFTo"
 
+//
+// Not implemented in Swift
+// 
+
 // NEGATIVE-NOT: Category2
 // NEGATIVE-NOT: NoImplClass
-// NEGATIVE-NOT: OBJC_CLASS_$_ImplClass.{{[0-9]}}
-// NEGATIVE-NOT: $sSo9ImplClassCMn
-// NEGATIVE-NOT: $sSo9ImplClassCHn
-// NEGATIVE-NOT: $sSo9ImplClassCN
-// NEGATIVE-NOT: $sSo9ImplClassCMf