; Tests whether resume function would remain dbg.value infomation if corresponding values are not used in the frame.
; RUN: opt < %s -passes='module(coro-early),cgscc(coro-split,coro-split)' -S | FileCheck %s
; RUN: opt --try-experimental-debuginfo-iterators < %s -passes='module(coro-early),cgscc(coro-split,coro-split)' -S | FileCheck %s
;
; This file is based on coro-debug-frame-variable.ll.
; CHECK: define internal fastcc void @f.resume(ptr noundef nonnull align 16 dereferenceable(80) %begin) !dbg ![[RESUME_FN_DBG_NUM:[0-9]+]]
; CHECK: await.ready:
; CHECK: #dbg_value(i32 poison, ![[IVAR_RESUME:[0-9]+]], !DIExpression(
; CHECK: #dbg_value(i32 poison, ![[JVAR_RESUME:[0-9]+]], !DIExpression(
;
; CHECK: ![[RESUME_FN_DBG_NUM]] = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov"
; CHECK: ![[IVAR_RESUME]] = !DILocalVariable(name: "i"
; CHECK: ![[JVAR_RESUME]] = !DILocalVariable(name: "j"
source_filename = "../llvm/test/Transforms/Coroutines/coro-debug-dbg.values-O2.ll"
define void @f(i32 %i, i32 %j) presplitcoroutine !dbg !8 {
entry:
%__promise = alloca i8, align 8
%x = alloca [10 x i32], align 16
%id = call token @llvm.coro.id(i32 16, ptr %__promise, ptr null, ptr 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 ptr @new(i64 %size)
br label %coro.init
coro.init: ; preds = %coro.alloc, %entry
%phi.entry.alloc = phi ptr [ null, %entry ], [ %memory, %coro.alloc ]
%begin = call ptr @llvm.coro.begin(token %id, ptr %phi.entry.alloc)
%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(ptr 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()
call void @llvm.dbg.value(metadata i32 0, metadata !6, metadata !DIExpression()), !dbg !11
%i.init.ready.inc = add nsw i32 0, 1
call void @llvm.dbg.value(metadata i32 %i.init.ready.inc, metadata !6, metadata !DIExpression()), !dbg !11
call void @llvm.dbg.declare(metadata ptr %x, metadata !12, metadata !DIExpression()), !dbg !17
call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 40, i1 false), !dbg !17
call void @print(i32 %i.init.ready.inc)
%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(ptr null)
%from.address = call ptr @from_address(ptr %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 @llvm.dbg.value(metadata i32 0, metadata !18, metadata !DIExpression()), !dbg !11
store i32 1, ptr %x, align 16, !dbg !20
%arrayidx1 = getelementptr inbounds [10 x i32], ptr %x, i64 0, i64 1, !dbg !21
store i32 2, ptr %arrayidx1, align 4, !dbg !22
%i.await.ready.inc = add nsw i32 %i.init.ready.inc, 1
call void @llvm.dbg.value(metadata i32 %i, metadata !6, metadata !DIExpression()), !dbg !11
call void @llvm.dbg.value(metadata i32 %j, metadata !18, metadata !DIExpression()), !dbg !11
call void @print(i32 %i.await.ready.inc)
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(ptr null)
%final.suspend.from_address = call ptr @from_address(ptr %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 ptr @llvm.coro.free(token %id, ptr %begin)
%free = icmp ne ptr %free.memory, null
br i1 %free, label %coro.free, label %after.coro.free
coro.free: ; preds = %cleanup
call void @delete(ptr %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(ptr null, i1 false, token none)
ret void
unreachable: ; preds = %after.coro.free
unreachable
}
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
; Function Attrs: argmemonly nounwind readonly
declare token @llvm.coro.id(i32, ptr readnone, ptr nocapture readonly, ptr) #1
; Function Attrs: nounwind
declare i1 @llvm.coro.alloc(token) #2
; Function Attrs: nounwind readnone
declare i64 @llvm.coro.size.i64() #3
; Function Attrs: nounwind
declare token @llvm.coro.save(ptr) #2
; Function Attrs: nounwind
declare ptr @llvm.coro.begin(token, ptr writeonly) #2
; Function Attrs: nounwind
declare i8 @llvm.coro.suspend(token, i1) #2
; Function Attrs: argmemonly nounwind readonly
declare ptr @llvm.coro.free(token, ptr nocapture readonly) #1
; Function Attrs: nounwind
declare i1 @llvm.coro.end(ptr, i1, token) #2
declare ptr @new(i64)
declare void @delete(ptr)
declare i1 @await_ready()
declare void @await_suspend()
declare void @await_resume()
declare void @print(i32)
declare ptr @from_address(ptr)
declare void @return_void()
declare void @final_suspend()
; Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
attributes #0 = { nofree nosync nounwind readnone speculatable willreturn }
attributes #1 = { argmemonly nounwind readonly }
attributes #2 = { nounwind }
attributes #3 = { nounwind readnone }
attributes #4 = { argmemonly nofree nosync nounwind willreturn writeonly }
!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: "repro.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: "i", 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: !1, file: !1, line: 23, type: !9, scopeLine: 23, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!9 = !DISubroutineType(types: !2)
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!11 = !DILocation(line: 0, scope: !7)
!12 = !DILocalVariable(name: "x", scope: !13, file: !1, line: 34, type: !14)
!13 = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
!14 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, size: 320, elements: !15)
!15 = !{!16}
!16 = !DISubrange(count: 10)
!17 = !DILocation(line: 24, column: 7, scope: !7)
!18 = !DILocalVariable(name: "j", scope: !7, file: !1, line: 32, type: !10)
!19 = !DILocation(line: 42, column: 3, scope: !7)
!20 = !DILocation(line: 42, column: 8, scope: !7)
!21 = !DILocation(line: 43, column: 3, scope: !7)
!22 = !DILocation(line: 43, column: 8, scope: !7)
Codebase Browser
llvm