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29 lines
1.3 KiB
Swift
29 lines
1.3 KiB
Swift
// RUN: %target-swift-frontend %s -emit-ir -g -o - \
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// RUN: -module-name a -disable-availability-checking \
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// RUN: | %FileCheck %s --check-prefix=CHECK
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// REQUIRES: concurrency
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// Test that lifetime extension preserves a dbg.declare for "n" in the resume
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// funclet.
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// CHECK-LABEL: define {{.*}} void @"$s1a4fiboyS2iYaFTY0_"
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// CHECK-NEXT: entryresume.0:
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// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[RHS:[0-9]+]], {{.*}}!DIExpression(DW_OP
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// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[LHS:[0-9]+]], {{.*}}!DIExpression(DW_OP
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// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[R:[0-9]+]], {{.*}}!DIExpression(DW_OP
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// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[N:[0-9]+]], {{.*}}!DIExpression(DW_OP
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// CHECK-NOT: {{ ret }}
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// CHECK: call void asm sideeffect ""
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// CHECK: ![[N]] = !DILocalVariable(name: "n"
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// CHECK: ![[R]] = !DILocalVariable(name: "retval"
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// CHECK: ![[LHS]] = !DILocalVariable(name: "lhs"
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// CHECK: ![[RHS]] = !DILocalVariable(name: "rhs"
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public func fibo(_ n: Int) async -> Int {
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var retval = n
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if retval < 2 { return 1 }
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retval = retval - 1
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let lhs = await fibo(retval - 1)
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let rhs = await fibo(retval - 2)
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return lhs + rhs + retval
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}
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