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; RUN: opt < %s -passes='function(coro-early),cgscc(coro-split,coro-split),function(sroa)' --reuse-storage-in-coroutine-frame -S | FileCheck %s
; Checks whether the dbg.declare for `__promise` remains valid under O2.
; CHECK-LABEL: define internal fastcc void @f.resume({{.*}})
; CHECK: entry.resume:
; CHECK: call void @llvm.dbg.declare(metadata %f.Frame* %FramePtr, metadata ![[PROMISEVAR_RESUME:[0-9]+]], metadata !DIExpression(
;
; CHECK: ![[PROMISEVAR_RESUME]] = !DILocalVariable(name: "__promise"
%promise_type = type { i32, i32, double }
define void @f() "coroutine.presplit"="0" !dbg !8 {
entry:
%__promise = alloca %promise_type, align 8
%0 = bitcast %promise_type* %__promise to i8*
%id = call token @llvm.coro.id(i32 16, i8* %0, i8* null, i8* null)
%alloc = call i1 @llvm.coro.alloc(token %id)
br i1 %alloc, label %coro.alloc, label %coro.init
coro.alloc: ; preds = %entry
%size = call i64 @llvm.coro.size.i64()
%memory = call i8* @new(i64 %size)
br label %coro.init
coro.init: ; preds = %coro.alloc, %entry
%phi.entry.alloc = phi i8* [ null, %entry ], [ %memory, %coro.alloc ]
%begin = call i8* @llvm.coro.begin(token %id, i8* %phi.entry.alloc)
call void @llvm.dbg.declare(metadata %promise_type* %__promise, metadata !6, metadata !DIExpression()), !dbg !18
%i.i = getelementptr inbounds %promise_type, %promise_type* %__promise, i64 0, i32 0
store i32 1, i32* %i.i, align 8
%j.i = getelementptr inbounds %promise_type, %promise_type* %__promise, i64 0, i32 1
store i32 2, i32* %j.i, align 4
%k.i = getelementptr inbounds %promise_type, %promise_type* %__promise, i64 0, i32 2
store double 3.000000e+00, double* %k.i, align 8
%ready = call i1 @await_ready()
br i1 %ready, label %init.ready, label %init.suspend
init.suspend: ; preds = %coro.init
%save = call token @llvm.coro.save(i8* null)
call void @await_suspend()
%suspend = call i8 @llvm.coro.suspend(token %save, i1 false)
switch i8 %suspend, label %coro.ret [
i8 0, label %init.ready
i8 1, label %init.cleanup
]
init.cleanup: ; preds = %init.suspend
br label %cleanup
init.ready: ; preds = %init.suspend, %coro.init
call void @await_resume()
%ready.again = call zeroext i1 @await_ready()
br i1 %ready.again, label %await.ready, label %await.suspend
await.suspend: ; preds = %init.ready
%save.again = call token @llvm.coro.save(i8* null)
%from.address = call i8* @from_address(i8* %begin)
call void @await_suspend()
%suspend.again = call i8 @llvm.coro.suspend(token %save.again, i1 false)
switch i8 %suspend.again, label %coro.ret [
i8 0, label %await.ready
i8 1, label %await.cleanup
]
await.cleanup: ; preds = %await.suspend
br label %cleanup
await.ready: ; preds = %await.suspend, %init.ready
call void @await_resume()
call void @return_void()
br label %coro.final
coro.final: ; preds = %await.ready
call void @final_suspend()
%coro.final.await_ready = call i1 @await_ready()
br i1 %coro.final.await_ready, label %final.ready, label %final.suspend
final.suspend: ; preds = %coro.final
%final.suspend.coro.save = call token @llvm.coro.save(i8* null)
%final.suspend.from_address = call i8* @from_address(i8* %begin)
call void @await_suspend()
%final.suspend.coro.suspend = call i8 @llvm.coro.suspend(token %final.suspend.coro.save, i1 true)
switch i8 %final.suspend.coro.suspend, label %coro.ret [
i8 0, label %final.ready
i8 1, label %final.cleanup
]
final.cleanup: ; preds = %final.suspend
br label %cleanup
final.ready: ; preds = %final.suspend, %coro.final
call void @await_resume()
br label %cleanup
cleanup: ; preds = %final.ready, %final.cleanup, %await.cleanup, %init.cleanup
%cleanup.dest.slot.0 = phi i32 [ 0, %final.ready ], [ 2, %final.cleanup ], [ 2, %await.cleanup ], [ 2, %init.cleanup ]
%free.memory = call i8* @llvm.coro.free(token %id, i8* %begin)
%free = icmp ne i8* %free.memory, null
br i1 %free, label %coro.free, label %after.coro.free
coro.free: ; preds = %cleanup
call void @delete(i8* %free.memory)
br label %after.coro.free
after.coro.free: ; preds = %coro.free, %cleanup
switch i32 %cleanup.dest.slot.0, label %unreachable [
i32 0, label %cleanup.cont
i32 2, label %coro.ret
]
cleanup.cont: ; preds = %after.coro.free
br label %coro.ret
coro.ret: ; preds = %cleanup.cont, %after.coro.free, %final.suspend, %await.suspend, %init.suspend
%end = call i1 @llvm.coro.end(i8* null, i1 false)
ret void
unreachable: ; preds = %after.coro.free
unreachable
}
declare void @llvm.dbg.declare(metadata, metadata, metadata)
declare token @llvm.coro.id(i32, i8* readnone, i8* nocapture readonly, i8*)
declare i1 @llvm.coro.alloc(token)
declare i64 @llvm.coro.size.i64()
declare token @llvm.coro.save(i8*)
declare i8* @llvm.coro.begin(token, i8* writeonly)
declare i8 @llvm.coro.suspend(token, i1)
declare i8* @llvm.coro.free(token, i8* nocapture readonly)
declare i1 @llvm.coro.end(i8*, i1)
declare i8* @new(i64)
declare void @delete(i8*)
declare i1 @await_ready()
declare void @await_suspend()
declare void @await_resume()
declare void @print(i32)
declare i8* @from_address(i8*)
declare void @return_void()
declare void @final_suspend()
!llvm.dbg.cu = !{!0}
!llvm.linker.options = !{}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "coro-debug.cpp", directory: ".")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{!"clang version 11.0.0"}
!6 = !DILocalVariable(name: "__promise", scope: !7, file: !1, line: 24, type: !10)
!7 = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
!8 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !8, file: !1, line: 23, type: !9, scopeLine: 23, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!9 = !DISubroutineType(types: !2)
!10 = !DIDerivedType(tag: DW_TAG_typedef, name: "promise_type", scope: !8, file: !1, line: 15, baseType: !11)
!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "promise_type", scope: !8, file: !1, line: 10, size: 128, flags: DIFlagTypePassByValue | DIFlagNonTrivial, elements: !12, identifier: "_ZTSN4coro12promise_typeE")
!12 = !{!13, !14, !15}
!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !8, file: !1, line: 10, baseType: !16, size: 32)
!14 = !DIDerivedType(tag: DW_TAG_member, name: "j", scope: !8, file: !1, line: 10, baseType: !16, size: 32, offset: 32)
!15 = !DIDerivedType(tag: DW_TAG_member, name: "k", scope: !8, file: !1, line: 10, baseType: !17, size: 64, offset: 64)
!16 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!17 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)
!18 = !DILocation(line: 0, scope: !7)
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