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24 lines
1.0 KiB
Swift
24 lines
1.0 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-emit-ir %s -module-name main -parse-as-library -enable-experimental-feature Volatile -Onone | %FileCheck %s
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// RUN: %target-swift-emit-ir %s -module-name main -parse-as-library -enable-experimental-feature Volatile -O | %FileCheck %s
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// RUN: %target-swift-emit-ir %s -module-name main -parse-as-library -enable-experimental-feature Volatile -Osize | %FileCheck %s
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import _Volatile
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public func test_volatilepointer() -> UInt8 {
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let p = VolatileMappedRegister<UInt8>(unsafeBitPattern: 0xf000baa9)
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p.store(42)
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let a = p.load()
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let b = p.load()
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let c = p.load()
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return c
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}
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// CHECK: define {{.*}}i8 @"$s4main20test_volatilepointers5UInt8VyF"()
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// CHECK: store atomic volatile i8 42, ptr {{.*}} monotonic, align 1
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// CHECK: load atomic volatile i8, ptr {{.*}} monotonic, align 1
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// CHECK: load atomic volatile i8, ptr {{.*}} monotonic, align 1
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// CHECK: [[RET:%.*]] = load atomic volatile i8, ptr {{.*}} monotonic, align 1
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// CHECK: ret i8 [[RET]]
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// CHECK: }
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