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1cbea04103
This is important for performance diagnostics: it’s assumed that (non-generic) MemoryLayout constants do not need to create metadata at runtime. At Onone this is only guaranteed if the TargetConstantFolding pass runs. rdar://94836837
36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
// RUN: %target-swift-frontend -experimental-performance-annotations %s -O -sil-verify-all -module-name=test -emit-sil | %FileCheck %s
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// Check that constant propagation of MemoryLayout is also done at -Onone to ensure that
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// no metadate is created at runtime - which would violate the performance annotation.
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// CHECK-LABEL: sil [no_locks] @$s4test7getSizeSiyF
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// CHECK: [[I:%[0-9]+]] = integer_literal {{.*}}, 4
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// CHECK: [[S:%[0-9]+]] = struct {{.*}}([[I]]
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// CHECK: return [[S]]
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// CHECK: } // end sil function '$s4test7getSizeSiyF'
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@_noLocks
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public func getSize() -> Int {
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return MemoryLayout<Int32>.size
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}
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// CHECK-LABEL: sil [no_locks] @$s4test12getAlignmentSiyF
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// CHECK: [[I:%[0-9]+]] = integer_literal {{.*}}, 4
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// CHECK: [[S:%[0-9]+]] = struct {{.*}}([[I]]
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// CHECK: return [[S]]
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// CHECK: } // end sil function '$s4test12getAlignmentSiyF'
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@_noLocks
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public func getAlignment() -> Int {
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return MemoryLayout<Int32>.alignment
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}
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// CHECK-LABEL: sil [no_locks] @$s4test9getStrideSiyF
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// CHECK: [[I:%[0-9]+]] = integer_literal {{.*}}, 4
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// CHECK: [[S:%[0-9]+]] = struct {{.*}}([[I]]
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// CHECK: return [[S]]
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// CHECK: } // end sil function '$s4test9getStrideSiyF'
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@_noLocks
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public func getStride() -> Int {
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return MemoryLayout<Int32>.stride
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}
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