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64 lines
2.0 KiB
Swift
64 lines
2.0 KiB
Swift
//===--- BoundsCheckOptimization.swift ------------------------*- swift -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2025 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// RUN: %target-swift-frontend -primary-file %s -O -emit-assembly -no-verbose-asm | \
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// RUN: %FileCheck %s --check-prefix CHECK --check-prefix CHECK-%target-cpu
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// REQUIRES: swift_stdlib_no_asserts
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import Swift
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func read(index: Int, span: Span<UInt8>) -> UInt8 {
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span[index]
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}
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// CHECK: s23BoundsCheckOptimization4read5index4spans5UInt8VSi_s4SpanVyAFGtF:
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// CHECK-arm64-NOT: tbnz
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// CHECK-arm64: cmp
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// all unsigned comparison spellings?
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// CHECK-arm64-NEXT: b.{{hs|hi|ls|lo|cc|cs}}
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// CHECK-arm64-NEXT: ldrb
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// CHECK-arm64-NEXT: ret
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// CHECK-x86_64-NOT: test
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// CHECK-x86_64: cmp
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// all unsigned comparison spellings?
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// CHECK-x86_64-NEXT: j{{a|ae|b|be|c|na|nae|nb|nbe|nc}}
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// CHECK-x86_64-NEXT: movzb
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// x86_64 might have a frame pointer operation before ret
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func write(value: UInt8, index: Int, span: inout MutableSpan<UInt8>) {
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span[index] = value
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}
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// CHECK: s23BoundsCheckOptimization5write5value5index4spanys5UInt8V_Sis11MutableSpanVyAGGztF:
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// CHECK-arm64-NOT: tbnz
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// CHECK-arm64: cmp
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// all unsigned comparison spellings?
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// CHECK-arm64-NEXT: b.{{hs|hi|ls|lo|cc|cs}}
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// no second compare
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// CHECK-arm64-NOT: cmp
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// no test after compare
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// CHECK-arm64-NOT: tbnz
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// CHECK-arm64: strb
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// CHECK-arm64-NEXT: ret
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// CHECK-x86_64-NOT: test
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// CHECK-x86_64: cmp
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// all unsigned comparison spellings?
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// CHECK-x86_64-NEXT: j{{a|ae|b|be|c|na|nae|nb|nbe|nc}}
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// no second compare
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// CHECK-x86_64-NOT: cmp
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// no test after compare
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// CHECK-x86_64-NOT: test
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// CHECK-x86_64: movb
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// x86_64 might have a frame pointer operation before ret
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