Run coro::salavageDebugInfo on dbg.declares in entry function

[aprantl]

Summary

While looking through diffs between the Swift branch and llvm.org if found the following patch that I previously forgot to upstream. The patch also calls coro::salavageDebugInf()o on all dbg.declares in entry function. This is necessary for Swift because in the Swift calling convention the entry function can already have a coroutine context argument. I believe that the patch is neutral for C++ coroutines at -O0 (and mildly beneficial at -O), as it does rewrite dbg.declares to point into the freshly setup coroutine frame, as shown in the updated test.

[aprantl]

Ping. Any objections to this?

llvm/lib/Transforms/Coroutines/CoroSplit.cpp

case coro::ABI::RetconOnce:
       break;
     }
   }
 
   // Replace all the swifterror operations in the original function.
   // This invalidates SwiftErrorOps in the Shape.
   replaceSwiftErrorOps(F, Shape, nullptr);
 
+  // Salvage debug info that points into the coroutine frame.
+  SmallVector<DbgDeclareInst *, 8> Worklist;
+  SmallDenseMap<llvm::Value *, llvm::AllocaInst *, 4> DbgPtrAllocaCache;
+  for (auto &BB : F)
+    for (auto &I : BB)
+      if (auto *DDI = dyn_cast<DbgDeclareInst>(&I))
+        Worklist.push_back(DDI);
+  for (DbgDeclareInst *DDI : Worklist)
+    coro::salvageDebugInfo(DbgPtrAllocaCache, DDI, Shape.ReuseFrameSlot);
+
   return Shape;
 }
 
 static void
 updateCallGraphAfterCoroutineSplit(Function &F, const coro::Shape &Shape,
                                    const SmallVectorImpl<Function *> &Clones,
                                    CallGraph &CG, CallGraphSCC &SCC) {
   if (!Shape.CoroBegin)

llvm/test/Transforms/Coroutines/coro-debug-coro-frame.ll

 ; RUN: opt < %s -passes='function(coro-early),cgscc(coro-split,coro-split)' -S | FileCheck %s
 
 ; Checks whether the dbg.declare for `__coro_frame` are created.
 
 ; CHECK-LABEL: define void @f(
 ; CHECK:       coro.init:
 ; CHECK:        %[[begin:.*]] = call noalias nonnull i8* @llvm.coro.begin(
+; CHECK:        call void @llvm.dbg.declare(metadata i8* %[[begin]], metadata ![[CORO_FRAME:[0-9]+]], metadata !DIExpression())
 ; CHECK:        %[[FramePtr:.*]] = bitcast i8* %[[begin]] to
-; CHECK:        call void @llvm.dbg.declare(metadata %f.Frame* %[[FramePtr]], metadata ![[CORO_FRAME:[0-9]+]], metadata !DIExpression())
 ;
 ; CHECK:       define internal fastcc void @f.resume(
 ; CHECK:       entry.resume:
 ; CHECK:            call void @llvm.dbg.declare(metadata %f.Frame** %[[FramePtr_RESUME:.*]], metadata ![[CORO_FRAME_IN_RESUME:[0-9]+]], metadata !DIExpression()
 ;
-; CHECK: ![[FILE:[0-9]+]] = !DIFile(filename: "coro-debug.cpp"
-; CHECK: ![[RAMP:[0-9]+]] = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov",
-; CHECK: ![[RAMP_SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: ![[RAMP]], file: ![[FILE]], line: 23
-; CHECK: ![[CORO_FRAME]] = !DILocalVariable(name: "__coro_frame", scope: ![[RAMP_SCOPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE:[0-9]+]], type: ![[FRAME_TYPE:[0-9]+]], flags: DIFlagArtificial)
-; CHECK: ![[FRAME_TYPE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "__coro_frame_ty", scope: ![[RAMP]], {{.*}}elements: ![[ELEMENTS:[0-9]+]]
-; CHECK: ![[ELEMENTS]] = !{![[RESUME_FN:[0-9]+]], ![[DESTROY_FN:[0-9]+]], ![[PROMISE:[0-9]+]], ![[INT64_0:[0-9]+]], ![[DOUBLE_1:[0-9]+]], ![[INT32_2:[0-9]+]], ![[INT32_3:[0-9]+]], ![[STRUCT_4:[0-9]+]], ![[CORO_INDEX:[0-9]+]]
-; CHECK: ![[RESUME_FN]] = !DIDerivedType(tag: DW_TAG_member, name: "__resume_fn"{{.*}}, flags: DIFlagArtificial
-; CHECK: ![[DESTROY_FN]] = !DIDerivedType(tag: DW_TAG_member, name: "__destroy_fn"{{.*}}, flags: DIFlagArtificial
-; CHECK: ![[PROMISE]] = !DIDerivedType(tag: DW_TAG_member, name: "__promise",{{.*}}baseType: ![[PROMISE_BASE:[0-9]+]]
-; CHECK: ![[PROMISE_BASE]] = !DIDerivedType(tag: DW_TAG_typedef, name: "promise_type"
-; CHECK: ![[INT64_0]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_64_0", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I64_BASE:[0-9]+]],{{.*}}, flags: DIFlagArtificial
-; CHECK: ![[I64_BASE]] = !DIBasicType(name: "__int_64", size: 64, encoding: DW_ATE_signed, flags: DIFlagArtificial)
-; CHECK: ![[DOUBLE_1]] = !DIDerivedType(tag: DW_TAG_member, name: "__double__1", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[DOUBLE_BASE:[0-9]+]]{{.*}}, flags: DIFlagArtificial
-; CHECK: ![[DOUBLE_BASE]] = !DIBasicType(name: "__double_", size: 64, encoding: DW_ATE_float, flags: DIFlagArtificial)
-; CHECK: ![[INT32_2]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_2", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I32_BASE:[0-9]+]]{{.*}}, flags: DIFlagArtificial
-; CHECK: ![[I32_BASE]] = !DIBasicType(name: "__int_32", size: 32, encoding: DW_ATE_signed, flags: DIFlagArtificial)
-; CHECK: ![[INT32_3]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_3", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I32_BASE]]
-; CHECK: ![[STRUCT_4]] = !DIDerivedType(tag: DW_TAG_member, name: "struct_big_structure_4", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[STRUCT_BASE:[0-9]+]]
-; CHECK: ![[STRUCT_BASE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "struct_big_structure"{{.*}}elements: ![[STRUCT_ELEMENTS:[0-9]+]]
-; CHECK: ![[STRUCT_ELEMENTS]] = !{![[MEM_TYPE:[0-9]+]]}
-; CHECK: ![[MEM_TYPE]] = !DIDerivedType(tag: DW_TAG_member, name: "UnknownType_4000"
-; CHECK: ![[CORO_INDEX]] = !DIDerivedType(tag: DW_TAG_member, name: "__coro_index"
-; CHECK: ![[PROMISE_VAR:[0-9]+]] = !DILocalVariable(name: "__promise", scope: ![[RAMP_SCOPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]]
-; CHECK: ![[BAR_FUNC:[0-9]+]] = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv",
-; CHECK: ![[BAR_SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: ![[BAR_FUNC]], file: !1
-; CHECK: ![[FRAME_TYPE_IN_BAR:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "__coro_frame_ty", scope: ![[BAR_FUNC]], file: ![[FILE]], line: [[BAR_LINE:[0-9]+]]{{.*}}elements: ![[ELEMENTS_IN_BAR:[0-9]+]]
-; CHECK: ![[ELEMENTS_IN_BAR]] = !{![[RESUME_FN_IN_BAR:[0-9]+]], ![[DESTROY_FN_IN_BAR:[0-9]+]], ![[PROMISE_IN_BAR:[0-9]+]], ![[INT64_0_IN_BAR:[0-9]+]], ![[DOUBLE_1_IN_BAR:[0-9]+]], ![[INT32_2_IN_BAR:[0-9]+]], ![[STRUCT_3_IN_BAR:[0-9]+]], ![[CORO_INDEX_IN_BAR:[0-9]+]]
-; CHECK: ![[PROMISE_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__promise",{{.*}}baseType: ![[PROMISE_BASE]]
-; CHECK: ![[INT64_0_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_64_0", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[I64_BASE]]
-; CHECK: ![[DOUBLE_1_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__double__1", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[DOUBLE_BASE]]
-; CHECK: ![[INT32_2_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_2", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[I32_BASE]]
-; CHECK: ![[STRUCT_3_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "struct_big_structure_3", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[STRUCT_BASE_IN_BAR:[0-9]+]]
-; CHECK: ![[STRUCT_BASE_IN_BAR]] = !DICompositeType(tag: DW_TAG_structure_type, name: "struct_big_structure", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]],{{.*}}
-; CHECK: ![[CORO_FRAME_IN_RESUME]] = !DILocalVariable(name: "__coro_frame",{{.*}}type: ![[FRAME_TYPE]]
+; CHECK-DAG: ![[FILE:[0-9]+]] = !DIFile(filename: "coro-debug.cpp"
+; CHECK-DAG: ![[RAMP:[0-9]+]] = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov",
+; CHECK-DAG: ![[RAMP_SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: ![[RAMP]], file: ![[FILE]], line: 23
+; CHECK-DAG: ![[CORO_FRAME]] = !DILocalVariable(name: "__coro_frame", scope: ![[RAMP_SCOPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE:[0-9]+]], type: ![[FRAME_TYPE:[0-9]+]], flags: DIFlagArtificial)
+; CHECK-DAG: ![[FRAME_TYPE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "__coro_frame_ty", scope: ![[RAMP]], {{.*}}elements: ![[ELEMENTS:[0-9]+]]
+; CHECK-DAG: ![[ELEMENTS]] = !{![[RESUME_FN:[0-9]+]], ![[DESTROY_FN:[0-9]+]], ![[PROMISE:[0-9]+]], ![[INT64_0:[0-9]+]], ![[DOUBLE_1:[0-9]+]], ![[INT32_2:[0-9]+]], ![[INT32_3:[0-9]+]], ![[STRUCT_4:[0-9]+]], ![[CORO_INDEX:[0-9]+]]
+; CHECK-DAG: ![[RESUME_FN]] = !DIDerivedType(tag: DW_TAG_member, name: "__resume_fn"{{.*}}, flags: DIFlagArtificial
+; CHECK-DAG: ![[DESTROY_FN]] = !DIDerivedType(tag: DW_TAG_member, name: "__destroy_fn"{{.*}}, flags: DIFlagArtificial
+; CHECK-DAG: ![[PROMISE]] = !DIDerivedType(tag: DW_TAG_member, name: "__promise",{{.*}}baseType: ![[PROMISE_BASE:[0-9]+]]
+; CHECK-DAG: ![[PROMISE_BASE]] = !DIDerivedType(tag: DW_TAG_typedef, name: "promise_type"
+; CHECK-DAG: ![[INT64_0]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_64_0", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I64_BASE:[0-9]+]],{{.*}}, flags: DIFlagArtificial
+; CHECK-DAG: ![[I64_BASE]] = !DIBasicType(name: "__int_64", size: 64, encoding: DW_ATE_signed, flags: DIFlagArtificial)
+; CHECK-DAG: ![[DOUBLE_1]] = !DIDerivedType(tag: DW_TAG_member, name: "__double__1", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[DOUBLE_BASE:[0-9]+]]{{.*}}, flags: DIFlagArtificial
+; CHECK-DAG: ![[DOUBLE_BASE]] = !DIBasicType(name: "__double_", size: 64, encoding: DW_ATE_float, flags: DIFlagArtificial)
+; CHECK-DAG: ![[INT32_2]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_2", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I32_BASE:[0-9]+]]{{.*}}, flags: DIFlagArtificial
+; CHECK-DAG: ![[I32_BASE]] = !DIBasicType(name: "__int_32", size: 32, encoding: DW_ATE_signed, flags: DIFlagArtificial)
+; CHECK-DAG: ![[INT32_3]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_3", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[I32_BASE]]
+; CHECK-DAG: ![[STRUCT_4]] = !DIDerivedType(tag: DW_TAG_member, name: "struct_big_structure_4", scope: ![[FRAME_TYPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]], baseType: ![[STRUCT_BASE:[0-9]+]]
+; CHECK-DAG: ![[STRUCT_BASE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "struct_big_structure"{{.*}}elements: ![[STRUCT_ELEMENTS:[0-9]+]]
+; CHECK-DAG: ![[STRUCT_ELEMENTS]] = !{![[MEM_TYPE:[0-9]+]]}
+; CHECK-DAG: ![[MEM_TYPE]] = !DIDerivedType(tag: DW_TAG_member, name: "UnknownType_4000"
+; CHECK-DAG: ![[CORO_INDEX]] = !DIDerivedType(tag: DW_TAG_member, name: "__coro_index"
+; CHECK-DAG: ![[PROMISE_VAR:[0-9]+]] = !DILocalVariable(name: "__promise", scope: ![[RAMP_SCOPE]], file: ![[FILE]], line: [[PROMISE_VAR_LINE]]
+; CHECK-DAG: ![[BAR_FUNC:[0-9]+]] = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv",
+; CHECK-DAG: ![[BAR_SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: ![[BAR_FUNC]], file: !1
+; CHECK-DAG: ![[FRAME_TYPE_IN_BAR:[0-9]+]] = !DICompositeType(tag: DW_TAG_structure_type, name: "__coro_frame_ty", scope: ![[BAR_FUNC]], file: ![[FILE]], line: [[BAR_LINE:[0-9]+]]{{.*}}elements: ![[ELEMENTS_IN_BAR:[0-9]+]]
+; CHECK-DAG: ![[ELEMENTS_IN_BAR]] = !{![[RESUME_FN_IN_BAR:[0-9]+]], ![[DESTROY_FN_IN_BAR:[0-9]+]], ![[PROMISE_IN_BAR:[0-9]+]], ![[INT64_0_IN_BAR:[0-9]+]], ![[DOUBLE_1_IN_BAR:[0-9]+]], ![[INT32_2_IN_BAR:[0-9]+]], ![[STRUCT_3_IN_BAR:[0-9]+]], ![[CORO_INDEX_IN_BAR:[0-9]+]]
+; CHECK-DAG: ![[PROMISE_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__promise",{{.*}}baseType: ![[PROMISE_BASE]]
+; CHECK-DAG: ![[INT64_0_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_64_0", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[I64_BASE]]
+; CHECK-DAG: ![[DOUBLE_1_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__double__1", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[DOUBLE_BASE]]
+; CHECK-DAG: ![[INT32_2_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "__int_32_2", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[I32_BASE]]
+; CHECK-DAG: ![[STRUCT_3_IN_BAR]] = !DIDerivedType(tag: DW_TAG_member, name: "struct_big_structure_3", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]], baseType: ![[STRUCT_BASE_IN_BAR:[0-9]+]]
+; CHECK-DAG: ![[STRUCT_BASE_IN_BAR]] = !DICompositeType(tag: DW_TAG_structure_type, name: "struct_big_structure", scope: ![[FRAME_TYPE_IN_BAR]], file: ![[FILE]], line: [[BAR_LINE]],{{.*}}
+; CHECK-DAG: ![[CORO_FRAME_IN_RESUME]] = !DILocalVariable(name: "__coro_frame",{{.*}}type: ![[FRAME_TYPE]]
 
 
 %promise_type = type { i32, i32, double }
 %struct.big_structure = type { [500 x i8] }
 declare void @produce(%struct.big_structure*)
 declare void @consume(%struct.big_structure*)
 declare void @pi32(i32*)
 declare void @pi64(i64*)

llvm/test/Transforms/Coroutines/coro-debug-frame-variable.ll

 ; funclet 'f.resume', and that they reference the address of the variables on
 ; the coroutine frame. The debug locations for the original function 'f' are
 ; static (!11 and !13), whereas the coroutine funclet will have its own new
 ; ones with identical line and column numbers.
 ;
 ; CHECK-LABEL: define void @f() {
 ; CHECK:       entry:
 ; CHECK:         %j = alloca i32, align 4
-; CHECK:         [[IGEP:%.+]] = getelementptr inbounds %f.Frame, %f.Frame* %FramePtr, i32 0, i32 4
-; CHECK:         [[XGEP:%.+]] = getelementptr inbounds %f.Frame, %f.Frame* %FramePtr, i32 0, i32 6
-; CHECK:       init.ready:
-; CHECK:         call void @llvm.dbg.declare(metadata i32* [[IGEP]], metadata ![[IVAR:[0-9]+]], metadata !DIExpression()), !dbg ![[IDBGLOC:[0-9]+]]
-; CHECK:         call void @llvm.dbg.declare(metadata [10 x i32]* [[XGEP]], metadata ![[XVAR:[0-9]+]], metadata !DIExpression()), !dbg ![[IDBGLOC]]
-; CHECK:       await.ready:
 ; CHECK:         call void @llvm.dbg.declare(metadata i32* %j, metadata ![[JVAR:[0-9]+]], metadata !DIExpression()), !dbg ![[JDBGLOC:[0-9]+]]
+; CHECK:         %[[MEMORY:.*]] = call i8* @new
+; CHECK:         call void @llvm.dbg.declare(metadata i8* %[[MEMORY]], metadata ![[XVAR:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 32)), !dbg ![[IDBGLOC:[0-9]+]]
+; CHECK:         call void @llvm.dbg.declare(metadata i8* %[[MEMORY]], metadata ![[IVAR:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 20)), !dbg ![[IDBGLOC]]
+; CHECK:       await.ready:
 ;
 ; CHECK-LABEL: define internal fastcc void @f.resume({{.*}}) {
 ; CHECK:       entry.resume:
 ; CHECK-NEXT:    %[[DBG_PTR:.*]] = alloca %f.Frame*
 ; CHECK-NEXT:    call void @llvm.dbg.declare(metadata %f.Frame** %[[DBG_PTR]], metadata ![[XVAR_RESUME:[0-9]+]],   metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 32)), !dbg
 ; CHECK-NEXT:    call void @llvm.dbg.declare(metadata %f.Frame** %[[DBG_PTR]], metadata ![[IVAR_RESUME:[0-9]+]], metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 20)), !dbg ![[IDBGLOC_RESUME:[0-9]+]]
 ; CHECK-NEXT:    store %f.Frame* {{.*}}, %f.Frame** %[[DBG_PTR]]
 ; CHECK:         %[[J:.*]] = alloca i32, align 4
 ; CHECK-NEXT:    call void @llvm.dbg.declare(metadata i32* %[[J]], metadata ![[JVAR_RESUME:[0-9]+]], metadata !DIExpression()), !dbg ![[JDBGLOC_RESUME:[0-9]+]]
 ; CHECK:       init.ready:
 ; CHECK:       await.ready:
 ;
-; CHECK: ![[IVAR]] = !DILocalVariable(name: "i"
-; CHECK: ![[SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
-; CHECK: ![[IDBGLOC]] = !DILocation(line: 24, column: 7, scope: ![[SCOPE]])
-; CHECK: ![[XVAR]] = !DILocalVariable(name: "x"
-; CHECK: ![[JVAR]] = !DILocalVariable(name: "j"
-; CHECK: ![[JDBGLOC]] = !DILocation(line: 32, column: 7, scope: ![[SCOPE]])
-
-; CHECK: ![[XVAR_RESUME]] = !DILocalVariable(name: "x"
-; CHECK: ![[IDBGLOC_RESUME]] = !DILocation(line: 24, column: 7, scope: ![[RESUME_SCOPE:[0-9]+]])
-; CHECK: ![[RESUME_SCOPE]] = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
-; CHECK: ![[IVAR_RESUME]] = !DILocalVariable(name: "i"
-; CHECK: ![[JVAR_RESUME]] = !DILocalVariable(name: "j"
-; CHECK: ![[JDBGLOC_RESUME]] = !DILocation(line: 32, column: 7, scope: ![[RESUME_SCOPE]])
+; CHECK-DAG: ![[IVAR]] = !DILocalVariable(name: "i"
+; CHECK-DAG: ![[SCOPE:[0-9]+]] = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
+; CHECK-DAG: ![[IDBGLOC]] = !DILocation(line: 24, column: 7, scope: ![[SCOPE]])
+; CHECK-DAG: ![[XVAR]] = !DILocalVariable(name: "x"
+; CHECK-DAG: ![[JVAR]] = !DILocalVariable(name: "j"
+; CHECK-DAG: ![[JDBGLOC]] = !DILocation(line: 32, column: 7, scope: ![[SCOPE]])
+
+; CHECK-DAG: ![[XVAR_RESUME]] = !DILocalVariable(name: "x"
+; CHECK-DAG: ![[IDBGLOC_RESUME]] = !DILocation(line: 24, column: 7, scope: ![[RESUME_SCOPE:[0-9]+]])
+; CHECK-DAG: ![[RESUME_SCOPE]] = distinct !DILexicalBlock(scope: !8, file: !1, line: 23, column: 12)
+; CHECK-DAG: ![[IVAR_RESUME]] = !DILocalVariable(name: "i"
+; CHECK-DAG: ![[JVAR_RESUME]] = !DILocalVariable(name: "j"
+; CHECK-DAG: ![[JDBGLOC_RESUME]] = !DILocation(line: 32, column: 7, scope: ![[RESUME_SCOPE]])
 define void @f() {
 entry:
   %__promise = alloca i8, align 8
   %i = alloca i32, align 4
   %j = alloca i32, align 4
   %x = alloca [10 x i32], align 16
   %id = call token @llvm.coro.id(i32 16, i8* %__promise, i8* null, i8* null)
   %alloc = call i1 @llvm.coro.alloc(token %id)