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Fix IRGen debug info for swift_task_alloc'ed variables.

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The old code attempted to load the variable despite not knowing its size. Fixed
by describing the variable's address on the task heap.
This commit is contained in:
Adrian Prantl
2022-12-12 17:17:03 -08:00
parent 0b05a1ed2d
commit e67d8bf4e3
3 changed files with 26 additions and 22 deletions
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20
test/DebugInfo/async-task-alloc.swift Normal file
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// RUN: %target-swift-frontend %s -emit-ir -g -o - \
// RUN: -module-name a -disable-availability-checking \
// RUN: | %FileCheck %s --check-prefix=CHECK
// REQUIRES: concurrency
// Test dynamically allocated local variables in async functions.
// CHECK-LABEL: define {{.*}} void @"$s1a1fyxxYalF"
// CHECK: swift_task_alloc
// CHECK-LABEL: define {{.*}} void @"$s1a1fyxxYalFTY0_"
// CHECK-NEXT: entryresume.0:
// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[T:[0-9]+]], {{.*}}!DIExpression({{.*}}DW_OP_deref
// CHECK-NEXT: call void @llvm.dbg.declare(metadata {{.*}}%0, metadata ![[DYNA:[0-9]+]], {{.*}}!DIExpression({{.*}}DW_OP_deref
// CHECK: ![[DYNA]] = !DILocalVariable(name: "dyna"
// CHECK: ![[T]] = !DILocalVariable(name: "t"
public func f<T>(_ t: T) async -> T {
let dyna = t
return dyna
}