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9c6cd08a9b
We were inlining the size and alignment, which was not correct. This was the cause of a long-standing ASAN failure in some library evolution tests. Fixes <rdar://problem/24540778>.
43 lines
2.0 KiB
Plaintext
43 lines
2.0 KiB
Plaintext
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -emit-module -enable-resilience -emit-module-path=%t/resilient_struct.swiftmodule -module-name=resilient_struct %S/../Inputs/resilient_struct.swift
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// RUN: %target-swift-frontend -emit-module -enable-resilience -emit-module-path=%t/resilient_class.swiftmodule -module-name=resilient_class %S/../Inputs/resilient_class.swift -I %t
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// RUN: %target-swift-frontend -I %t -emit-ir -enable-resilience %s | %FileCheck %s
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// RUN: %target-swift-frontend -I %t -emit-ir -enable-resilience -O %s
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// REQUIRES: CPU=x86_64
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sil_stage canonical
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import Builtin
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import Swift
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import SwiftShims
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import resilient_class
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// Make sure that an alloc_ref of a resilient class loads the size and alignment
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// of the instance from metadata.
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//
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// Perhaps we should not serialize allocating initializers, then this would not
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// be an issue.
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// CHECK-LABEL: define {{(protected )?}}swiftcc void @allocResilientOutsideParent()
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// CHECK: [[META:%.*]] = call %swift.type* @_T015resilient_class22ResilientOutsideParentCMa()
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// CHECK-NEXT: [[META_ADDR:%.*]] = bitcast %swift.type* [[META]] to i8*
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// CHECK-NEXT: [[SIZE_ADDR:%.*]] = getelementptr inbounds i8, i8* [[META_ADDR]], i32 48
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// CHECK-NEXT: [[SIZE_PTR:%.*]] = bitcast i8* [[SIZE_ADDR]] to i32*
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// CHECK-NEXT: [[SIZE_2:%.*]] = load i32, i32* [[SIZE_PTR]], align 8
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// CHECK-NEXT: [[SIZE:%.*]] = zext i32 [[SIZE_2]] to i64
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// CHECK-NEXT: [[ALIGN_ADDR:%.*]] = getelementptr inbounds i8, i8* [[META_ADDR]], i32 52
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// CHECK-NEXT: [[ALIGN_PTR:%.*]] = bitcast i8* [[ALIGN_ADDR]] to i16*
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// CHECK-NEXT: [[ALIGN_2:%.*]] = load i16, i16* [[ALIGN_PTR]], align 4
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// CHECK-NEXT: [[ALIGN:%.*]] = zext i16 [[ALIGN_2]] to i64
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// CHECK-NEXT: call noalias %swift.refcounted* @swift_rt_swift_allocObject(%swift.type* [[META]], i64 [[SIZE]], i64 [[ALIGN]])
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sil @allocResilientOutsideParent : $@convention(thin) () -> () {
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bb0:
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%c = alloc_ref $ResilientOutsideParent
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dealloc_ref %c : $ResilientOutsideParent
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%result = tuple ()
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return %result : $()
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}
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