[NFC] Slightly loosen IR checks in objcImpl test

• Remove dependency on where the `init` selector is emitted.
• Use variable names captured from previous lines instead of assuming specific names.

Author: beccadax

test/IRGen/objc_implementation.swift

@@ -16,13 +16,12 @@
 // 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|%swift.opaque\* bitcast}} ({ i32, i32, i32, i32, i8*, i8*, i8*, i8*, i8*, i8*, i8* }* [[_METACLASS_DATA_ImplClass:@[^, ]+]] to {{i64|%swift.opaque\*}}) }, align 8
 // CHECK: [[_METACLASS_DATA_ImplClass]] = internal constant { i32, i32, i32, i32, i8*, i8*, i8*, i8*, i8*, i8*, i8* } { i32 129, i32 40, i32 40, i32 0, i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.9.ImplClass, i64 0, i64 0), i8* null, i8* null, i8* null, i8* null, i8* null }, section "__DATA, __objc_const", align 8
 // TODO: Why the extra i32 field above?
-// CHECK: [[selector_data_init:@[^, ]+]] = private global [5 x i8] c"init\00", section "__TEXT,__objc_methname,cstring_literals", align 1
 
 // Class
 // CHECK: [[selector_data_implProperty:@[^, ]+]] = private global [13 x i8] c"implProperty\00", section "__TEXT,__objc_methname,cstring_literals", align 1
 // CHECK: [[selector_data_setImplProperty_:@[^, ]+]] = private global [17 x i8] c"setImplProperty:\00", section "__TEXT,__objc_methname,cstring_literals", align 1
 // CHECK: [[selector_data__cxx_destruct:@[^, ]+]] = private global [14 x i8] c".cxx_destruct\00", section "__TEXT,__objc_methname,cstring_literals", align 1
-// CHECK: [[_INSTANCE_METHODS_ImplClass:@[^, ]+]] = internal constant { i32, i32, [5 x { i8*, i8*, i8* }] } { i32 24, i32 5, [5 x { i8*, i8*, i8* }] [{ i8*, i8*, i8* } { i8* getelementptr inbounds ([5 x i8], [5 x i8]* [[selector_data_init]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.@16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationEABycfcTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([13 x i8], [13 x i8]* [[selector_data_implProperty]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.i16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE12implPropertys5Int32VvgTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([17 x i8], [17 x i8]* [[selector_data_setImplProperty_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE12implPropertys5Int32VvsTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([12 x i8], [12 x i8]* [[selector_data_mainMethod_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE10mainMethodyys5Int32VFTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([14 x i8], [14 x i8]* [[selector_data__cxx_destruct]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.v16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassCfETo{{(\.ptrauth)?}}" to i8*) }] }, section "__DATA, __objc_data", align 8
+// CHECK: [[_INSTANCE_METHODS_ImplClass:@[^, ]+]] = internal constant { i32, i32, [5 x { i8*, i8*, i8* }] } { i32 24, i32 5, [5 x { i8*, i8*, i8* }] [{ i8*, i8*, i8* } { i8* getelementptr inbounds ([5 x i8], [5 x i8]* @"\01L_selector_data(init)", i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.@16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationEABycfcTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([13 x i8], [13 x i8]* [[selector_data_implProperty]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.i16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE12implPropertys5Int32VvgTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([17 x i8], [17 x i8]* [[selector_data_setImplProperty_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE12implPropertys5Int32VvsTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([12 x i8], [12 x i8]* [[selector_data_mainMethod_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassC19objc_implementationE10mainMethodyys5Int32VFTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([14 x i8], [14 x i8]* [[selector_data__cxx_destruct]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.v16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$sSo9ImplClassCfETo{{(\.ptrauth)?}}" to i8*) }] }, section "__DATA, __objc_data", align 8
 // CHECK: [[_IVARS_ImplClass:@[^, ]+]] = internal constant { i32, i32, [2 x { i64*, i8*, i8*, i32, i32 }] } { i32 32, i32 2, [2 x { i64*, i8*, i8*, i32, i32 }] [{ i64*, i8*, i8*, i32, i32 } { i64* @"$sSo9ImplClassC19objc_implementationE12implPropertys5Int32VvpWvd", i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.12.implProperty, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.0., i64 0, i64 0), i32 2, i32 4 }, { i64*, i8*, i8*, i32, i32 } { i64* @"$sSo9ImplClassC19objc_implementationE13implProperty2So8NSObjectCSgvpWvd", i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.13.implProperty2, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.0., i64 0, i64 0), i32 3, i32 8 }] }, section "__DATA, __objc_const", align 8
 // CHECK: [[_PROPERTIES_ImplClass:@[^, ]+]] = internal constant { i32, i32, [1 x { i8*, i8* }] } { i32 16, i32 1, [1 x { i8*, i8* }] [{ i8*, i8* } { i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.12.implProperty, i64 0, i64 0), i8* getelementptr inbounds ([19 x i8], [19 x i8]* @".str.18.Ti,N,VimplProperty", i64 0, i64 0) }] }, section "__DATA, __objc_const", align 8
 // CHECK: [[_DATA_ImplClass:@[^, ]+]] = internal constant { i32, i32, i32, i32, i8*, i8*, { i32, i32, [5 x { i8*, i8*, i8* }] }*, i8*, { i32, i32, [2 x { i64*, i8*, i8*, i32, i32 }] }*, i8*, { i32, i32, [1 x { i8*, i8* }] }* } { i32 388, i32 8, i32 24, i32 0, i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.9.ImplClass, i64 0, i64 0), { i32, i32, [5 x { i8*, i8*, i8* }] }* [[_INSTANCE_METHODS_ImplClass]], i8* null, { i32, i32, [2 x { i64*, i8*, i8*, i32, i32 }] }* [[_IVARS_ImplClass]], i8* null, { i32, i32, [1 x { i8*, i8* }] }* [[_PROPERTIES_ImplClass]] }, section "__DATA, __objc_data", align 8
@@ -76,7 +75,7 @@
 // CHECK: [[_METACLASS_DATA_SwiftSubclass]] = internal constant { i32, i32, i32, i32, i8*, i8*, i8*, i8*, i8*, i8*, i8* } { i32 129, i32 40, i32 40, i32 0, i8* null, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.40._TtC19objc_implementation13SwiftSubclass, i64 0, i64 0), i8* null, i8* null, i8* null, i8* null, i8* null }, section "__DATA, __objc_const", align 8
 
 // Class
-// CHECK: [[_INSTANCE_METHODS_SwiftSubclass:@[^, ]+]] = internal constant { i32, i32, [2 x { i8*, i8*, i8* }] } { i32 24, i32 2, [2 x { i8*, i8*, i8* }] [{ i8*, i8*, i8* } { i8* getelementptr inbounds ([12 x i8], [12 x i8]* [[selector_data_mainMethod_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$s19objc_implementation13SwiftSubclassC10mainMethodyys5Int32VFTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([5 x i8], [5 x i8]* [[selector_data_init]], i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.@16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$s19objc_implementation13SwiftSubclassCACycfcTo{{(\.ptrauth)?}}" to i8*) }] }, section "__DATA, __objc_data", align 8
+// CHECK: [[_INSTANCE_METHODS_SwiftSubclass:@[^, ]+]] = internal constant { i32, i32, [2 x { i8*, i8*, i8* }] } { i32 24, i32 2, [2 x { i8*, i8*, i8* }] [{ i8*, i8*, i8* } { i8* getelementptr inbounds ([12 x i8], [12 x i8]* [[selector_data_mainMethod_]], i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @".str.10.v20@0:8i16", i64 0, i64 0), i8* bitcast ({{.*}}* @"$s19objc_implementation13SwiftSubclassC10mainMethodyys5Int32VFTo{{(\.ptrauth)?}}" to i8*) }, { i8*, i8*, i8* } { i8* getelementptr inbounds ([5 x i8], [5 x i8]* @"\01L_selector_data(init)", i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @".str.7.@16@0:8", i64 0, i64 0), i8* bitcast ({{.*}}* @"$s19objc_implementation13SwiftSubclassCACycfcTo{{(\.ptrauth)?}}" to i8*) }] }, section "__DATA, __objc_data", align 8
 // CHECK: [[_DATA_SwiftSubclass:@[^, ]+]] = internal constant { i32, i32, i32, i32, i8*, i8*, { i32, i32, [2 x { i8*, i8*, i8* }] }*, i8*, i8*, i8*, i8* } { i32 128, i32 24, i32 24, i32 0, i8* null, i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.40._TtC19objc_implementation13SwiftSubclass, i64 0, i64 0), { i32, i32, [2 x { i8*, i8*, i8* }] }* [[_INSTANCE_METHODS_SwiftSubclass]], i8* null, i8* null, i8* null, i8* null }, section "__DATA, __objc_data", align 8
 
 // Swift metadata
@@ -188,8 +187,8 @@ public func fn(impl: ImplClass, swiftSub: SwiftSubclass) {
 // CHECK:   [[PARAM_impl:%[^ ]+]] = bitcast %TSo9ImplClassC* %0 to %1*
 // CHECK:   call void bitcast (void ()* @objc_msgSend to void (%1*, i8*, i32)*)(%1* [[PARAM_impl]], i8* [[SEL_1]], i32 0)
 // CHECK:   [[SEL_2:%[^ ]+]] = load i8*, i8** @"\01L_selector(mainMethod:)", align 8
-// CHECK:   [[PARAM_swiftSub:%[^ ]+]] = bitcast %T19objc_implementation13SwiftSubclassC* %1 to %2*
-// CHECK:   call void bitcast (void ()* @objc_msgSend to void (%2*, i8*, i32)*)(%2* [[PARAM_swiftSub]], i8* [[SEL_2]], i32 1)
+// CHECK:   [[PARAM_swiftSub:%[^ ]+]] = bitcast %T19objc_implementation13SwiftSubclassC* %1 to [[SEL_1]]*
+// CHECK:   call void bitcast (void ()* @objc_msgSend to void ([[SEL_1]]*, i8*, i32)*)([[SEL_1]]* [[PARAM_swiftSub]], i8* [[SEL_2]], i32 1)
 // CHECK:   ret void
 // CHECK: }