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42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
// RUN: %target-sil-opt %s -global-load-store-opts | FileCheck %s
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sil_stage canonical
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import Builtin
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struct MyStruct {
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var value : Builtin.FPIEEE64
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}
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enum MyEnum {
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case Some(MyStruct)
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case None
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}
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// Check if alias analysis can handle unchecked_take_enum_data_addr correctly
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// and does not crash with a stack overflow.
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// CHECK-LABEL: sil @testit
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// CHECK: load
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// CHECK: load
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// CHECK: return
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sil @testit : $@convention(method) (MyEnum) -> Builtin.FPIEEE64 {
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bb0(%0 : $MyEnum):
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%x1 = alloc_stack $MyEnum
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store %0 to %x1#1 : $*MyEnum
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%x7 = unchecked_take_enum_data_addr %x1#1 : $*MyEnum, #MyEnum.Some!enumelt.1
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%x8 = struct_element_addr %x7 : $*MyStruct, #MyStruct.value
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%x11 = alloc_stack $MyEnum
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store %0 to %x11#1 : $*MyEnum
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%x19 = unchecked_take_enum_data_addr %x11#1 : $*MyEnum, #MyEnum.Some!enumelt.1
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%x20 = struct_element_addr %x19 : $*MyStruct, #MyStruct.value
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%x24 = load %x20 : $*Builtin.FPIEEE64
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%x27 = load %x8 : $*Builtin.FPIEEE64
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%x28 = builtin "fsub_FPIEEE64"(%x27 : $Builtin.FPIEEE64, %x24 : $Builtin.FPIEEE64) : $Builtin.FPIEEE64
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dealloc_stack %x11#0 : $*@local_storage MyEnum
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dealloc_stack %x1#0 : $*@local_storage MyEnum
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return %x28 : $Builtin.FPIEEE64
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}
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