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alignment.sil
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// RUN: %target-swift-frontend -emit-ir %s | %FileCheck %s
import Swift
import Builtin
@_alignment(16) struct Foo { var x, y, z, w: Float }
@_alignment(16) enum Empty {}
@_alignment(16) enum Singleton { case V4(Float, Float, Float, Float) }
@_alignment(16) enum NoPayload { case A, B, C }
@_alignment(16) enum SinglePayload { case A(Float), B, C }
@_alignment(16) enum MultiPayload { case A(Float), B(Float), C }
// CHECK-LABEL: define {{.*}} @test_alignment
sil @test_alignment : $@convention(thin) () -> () {
entry:
// CHECK: alloca %T9alignment3FooV, align 16
%a = alloc_stack $*Foo
// CHECK: alloca %T9alignment9SingletonO, align 16
%b = alloc_stack $*Singleton
%c = alloc_stack $*Empty
// CHECK: alloca %T9alignment9NoPayloadO, align 16
%d = alloc_stack $*NoPayload
// CHECK: alloca %T9alignment13SinglePayloadO, align 16
%e = alloc_stack $*SinglePayload
// CHECK: alloca %T9alignment12MultiPayloadO, align 16
%f = alloc_stack $*MultiPayload
// CHECK: load float{{.*}}, align 16
// CHECK: load float{{.*}}, align 4
// CHECK: load float{{.*}}, align 8
// CHECK: load float{{.*}}, align 4
%z = load %a : $*Foo
// CHECK: store float{{.*}}, align 16
// CHECK: store float{{.*}}, align 4
// CHECK: store float{{.*}}, align 8
// CHECK: store float{{.*}}, align 4
store %z to %a : $*Foo
// CHECK: load float{{.*}}, align 16
// CHECK: load float{{.*}}, align 4
// CHECK: load float{{.*}}, align 8
// CHECK: load float{{.*}}, align 4
%y = load %b : $*Singleton
// CHECK: store float{{.*}}, align 16
// CHECK: store float{{.*}}, align 4
// CHECK: store float{{.*}}, align 8
// CHECK: store float{{.*}}, align 4
store %y to %b : $*Singleton
%x = load %c : $*Empty
store %x to %c : $*Empty
// CHECK: load i8{{.*}}, align 16
%w = load %d : $*NoPayload
// CHECK: store i8{{.*}}, align 16
store %w to %d : $*NoPayload
// CHECK: load i32{{.*}}, align 16
// CHECK: load i1{{.*}}, align 4
%v = load %e : $*SinglePayload
// CHECK: store i32{{.*}}, align 16
// CHECK: store i1{{.*}}, align 4
store %v to %e : $*SinglePayload
// CHECK: load i32{{.*}}, align 16
// CHECK: load i8{{.*}}, align 4
%u = load %f : $*MultiPayload
// CHECK: store i32{{.*}}, align 16
// CHECK: store i8{{.*}}, align 4
store %u to %f : $*MultiPayload
dealloc_stack %f : $*MultiPayload
dealloc_stack %e : $*SinglePayload
dealloc_stack %d : $*NoPayload
dealloc_stack %c : $*Empty
dealloc_stack %b : $*Singleton
dealloc_stack %a : $*Foo
return undef : $()
}
// CHECK-LABEL: define {{.*}} @test_unaligned
// CHECK: store i64 %{{.*}}, ptr %{{.*}}, align 8
// CHECK: %{{.*}} = load i64, ptr %{{.*}}, align 8
// CHECK: store i64 %{{.*}}, ptr %{{.*}}, align 1
// CHECK: %{{.*}} = load i64, ptr %{{.*}}, align 1
// CHECK: store i64 %{{.*}}, ptr %{{.*}}, align 8
// CHECK: %{{.*}} = load i64, ptr %{{.*}}, align 8
// CHECK: store i64 %{{.*}}, ptr %{{.*}}, align 536870912
// CHECK: %{{.*}} = load i64, ptr %{{.*}}, align 536870912
sil @test_unaligned : $@convention(thin) (Builtin.RawPointer, Builtin.Int64) -> () {
entry(%0 : $Builtin.RawPointer, %1 : $Builtin.Int64):
%2 = pointer_to_address %0 : $Builtin.RawPointer to $*Builtin.Int64
store %1 to %2 : $*Builtin.Int64
%4 = load %2 : $*Builtin.Int64
%5 = pointer_to_address %0 : $Builtin.RawPointer to [align=1] $*Builtin.Int64
store %1 to %5 : $*Builtin.Int64
%7 = load %5 : $*Builtin.Int64
%8 = pointer_to_address %0 : $Builtin.RawPointer to [align=8] $*Builtin.Int64
store %1 to %8 : $*Builtin.Int64
%10 = load %8 : $*Builtin.Int64
%11 = pointer_to_address %0 : $Builtin.RawPointer to [align=536870912] $*Builtin.Int64
store %1 to %11 : $*Builtin.Int64
%12 = load %11 : $*Builtin.Int64
return undef : $()
}
