Merge pull request #14823 from rjmccall/no-instantiate-field-type-vector-slot

Author: swift-ci

lib/IRGen/GenMeta.cpp

@@ -3222,9 +3222,6 @@ namespace {
 
       asImpl().addDependentData();
 
-      // Save a slot for the field type vector address to be instantiated into.
-      asImpl().addFieldTypeVectorReferenceSlot();
-
       // Lay out the template data.
       super::layout();
 
@@ -3281,10 +3278,6 @@ namespace {
       super::addGenericWitnessTable(type, conf, std::forward<T>(args)...);
     }
 
-    void addFieldTypeVectorReferenceSlot() {
-      B.addNullPointer(IGM.TypeMetadataPtrTy->getPointerTo());
-    }
-    
     // Can be overridden by subclassers to emit other dependent metadata.
     void addDependentData() {}
 

test/IRGen/enum_value_semantics.sil

@@ -156,7 +156,7 @@ enum GenericFixedLayout<T> {
 
 // CHECK-LABEL: @"$S20enum_value_semantics18GenericFixedLayoutOMP" = internal global <{{[{].*\* [}]}}> <{
 // CHECK:   %swift.type* (%swift.type_pattern*, i8**)* @create_generic_metadata_GenericFixedLayout
-// CHECK:   i32 40, i16 1, i16 16,
+// CHECK:   i32 32, i16 1, i16 8,
 // CHECK:   [16 x i8*] zeroinitializer,
 // CHECK:   i8** getelementptr inbounds ([18 x i8*], [18 x i8*]* @"$S20enum_value_semantics18GenericFixedLayoutOWV", i32 0, i32 0),
 // CHECK:   i64 2,

test/IRGen/field_type_vectors.sil

@@ -320,20 +320,20 @@ entry(%c : $RootGeneric<Int32>):
 // CHECK-objc:   [[METADATA_ARRAY:%.*]] = bitcast %swift.type* [[METADATA]] to i8**
 // CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 0
 // CHECK-objc:   [[T1:%.*]] = bitcast i8** [[T0]] to %objc_class**
-// CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -26
+// CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -25
 // CHECK-objc:   [[METACLASS:%.*]] = bitcast i8** [[T0]] to %objc_class*
 // CHECK-objc:   store %objc_class* [[METACLASS]], %objc_class** [[T1]], align 8
 //   Set up the instance rodata pointer.
 // CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 4
 // CHECK-objc:   [[T1:%.*]] = bitcast i8** [[T0]] to i64*
-// CHECK-objc:   [[RODATA:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -21
+// CHECK-objc:   [[RODATA:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -20
 // CHECK-objc:   [[T2:%.*]] = ptrtoint i8** [[RODATA]] to i64
 // CHECK-objc:   [[T3:%.*]] = or i64 [[T2]], 1
 // CHECK-objc:   store i64 [[T3]], i64* [[T1]], align 8
 //   Set up the class rodata pointer.
-// CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -22
+// CHECK-objc:   [[T0:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -21
 // CHECK-objc:   [[T1:%.*]] = bitcast i8** [[T0]] to i64*
-// CHECK-objc:   [[META_RODATA:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -12
+// CHECK-objc:   [[META_RODATA:%.*]] = getelementptr inbounds i8*, i8** [[METADATA_ARRAY]], i32 -11
 // CHECK-objc:   [[T2:%.*]] = ptrtoint i8** [[META_RODATA]] to i64
 // CHECK-objc:   store i64 [[T2]], i64* [[T1]], align 8
 //   Initialize our own dependent field offsets.

test/IRGen/generic_classes.sil

@@ -39,7 +39,7 @@ import Builtin
 // CHECK: @"$S15generic_structs13SingleDynamicVMP" = internal global <{ {{.*}} }> <{
 // -- template header
 // CHECK-SAME:   %swift.type* (%swift.type_pattern*, i8**)* @create_generic_metadata_SingleDynamic,
-// CHECK-SAME:   i32 48, i16 1, i16 16, [{{[0-9]+}} x i8*] zeroinitializer,
+// CHECK-SAME:   i32 40, i16 1, i16 8, [{{[0-9]+}} x i8*] zeroinitializer,
 // -- vwtable pointer
 // CHECK-SAME:   @"$S15generic_structs13SingleDynamicVWV"
 // -- address point

test/IRGen/generic_structs.sil

@@ -10,11 +10,11 @@
 
 // CHECK-LABEL: @"$S13generic_types1ACMP" = internal global
 // CHECK:   %swift.type* (%swift.type_pattern*, i8**)* @create_generic_metadata_A,
-// CHECK-native-SAME: i32 104,
-// CHECK-objc-SAME:   i32 288,
+// CHECK-native-SAME: i32 96,
+// CHECK-objc-SAME:   i32 280,
 // CHECK-SAME:   i16 1,
-// CHECK-native-SAME: i16 24,
-// CHECK-objc-SAME:   i16 208,
+// CHECK-native-SAME: i16 16,
+// CHECK-objc-SAME:   i16 200,
 // CHECK-SAME:   [{{[0-9]+}} x i8*] zeroinitializer,
 // CHECK-SAME:   void ([[A]]*)* @"$S13generic_types1ACfD",
 // CHECK-SAME:   i8** @"$SBoWV",
@@ -39,11 +39,11 @@
 
 // CHECK-LABEL: @"$S13generic_types1BCMP" = internal global
 // CHECK-SAME:   %swift.type* (%swift.type_pattern*, i8**)* @create_generic_metadata_B,
-// CHECK-native-SAME: i32 104,
-// CHECK-objc-SAME:   i32 288,
+// CHECK-native-SAME: i32 96,
+// CHECK-objc-SAME:   i32 280,
 // CHECK-SAME:   i16 1,
-// CHECK-native-SAME: i16 24,
-// CHECK-objc-SAME:   i16 208,
+// CHECK-native-SAME: i16 16,
+// CHECK-objc-SAME:   i16 200,
 // CHECK-SAME:   [{{[0-9]+}} x i8*] zeroinitializer,
 // CHECK-SAME:   void ([[B]]*)* @"$S13generic_types1BCfD",
 // CHECK-SAME:   i8** @"$SBoWV",