|  | ; RUN: opt -passes='declare-to-assign,verify' %s -S -o - \ | 
|  | ; RUN: | FileCheck %s --implicit-check-not="#dbg_" | 
|  |  | 
|  | ;; This test checks that `trackAssignments` is working correctly by using the | 
|  | ;; pass-wrapper `declare-to-assign`. Each function checks some specific | 
|  | ;; functionality and has its checks inline. | 
|  |  | 
|  | ;; $ cat test.cpp | 
|  | ;; struct Inner { int A, B; }; | 
|  | ;; struct Outer { Inner A, B; }; | 
|  | ;; struct Large { int A[10]; }; | 
|  | ;; struct LCopyCtor { int A[4]; LCopyCtor(); LCopyCtor(LCopyCtor const &); }; | 
|  | ;; int Value, Index, Cond; | 
|  | ;; Inner InnerA, InnerB; | 
|  | ;; Large L; | 
|  | ;; | 
|  | ;; void zeroInit() { int Z[3] = {0, 0, 0}; } | 
|  | ;; | 
|  | ;; void memcpyInit() { int A[4] = {0, 1, 2, 3}; } | 
|  | ;; | 
|  | ;; void setField() { | 
|  | ;;   Outer O; | 
|  | ;;   O.A.B = Value; | 
|  | ;; } | 
|  | ;; | 
|  | ;; void unknownOffset() { | 
|  | ;;   int A[2]; | 
|  | ;;   A[Index] = Value; | 
|  | ;; } | 
|  | ;; | 
|  | ;; Inner sharedAlloca() { | 
|  | ;;   if (Cond) { | 
|  | ;;     Inner A = InnerA; | 
|  | ;;     return A; | 
|  | ;;   } else { | 
|  | ;;     Inner B = InnerB; | 
|  | ;;     return B; | 
|  | ;;   } | 
|  | ;; } | 
|  | ;; | 
|  | ;; Large sret() { | 
|  | ;;   Large X = L; | 
|  | ;;   return X; | 
|  | ;; } | 
|  | ;; | 
|  | ;; void byval(Large X) {} | 
|  | ;; | 
|  | ;; LCopyCtor indirectReturn() { | 
|  | ;;  LCopyCtor R; | 
|  | ;;  return R; | 
|  | ;; } | 
|  | ;; | 
|  | ;; $ clang++ -g test.cpp -o - -emit-llvm -S -Xclang -disable-llvm-passes -O2 | 
|  | ;; | 
|  | ;; Then these functions are added manually to the IR using | 
|  | ;;     $ clang++ -g test.cpp -o - -emit-llvm -S -O0 | 
|  | ;; and removing the optnone attributes: | 
|  | ;; | 
|  | ;; __attribute__((always_inline)) | 
|  | ;; int sqr(int Y) { return Y * Y;  } | 
|  | ;; int fun(int X) { return sqr(X); } | 
|  |  | 
|  |  | 
|  | source_filename = "test.cpp" | 
|  | target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" | 
|  | target triple = "x86_64-unknown-linux-gnu" | 
|  |  | 
|  | %struct.Inner = type { i32, i32 } | 
|  | %struct.Large = type { [10 x i32] } | 
|  | %struct.Outer = type { %struct.Inner, %struct.Inner } | 
|  | %struct.LCopyCtor = type { [4 x i32] } | 
|  |  | 
|  | @Value = dso_local global i32 0, align 4, !dbg !0 | 
|  | @Index = dso_local global i32 0, align 4, !dbg !5 | 
|  | @Cond = dso_local global i32 0, align 4, !dbg !8 | 
|  | @InnerA = dso_local global %struct.Inner zeroinitializer, align 4, !dbg !10 | 
|  | @InnerB = dso_local global %struct.Inner zeroinitializer, align 4, !dbg !16 | 
|  | @L = dso_local global %struct.Large zeroinitializer, align 4, !dbg !18 | 
|  | @__const._Z10memcpyInitv.A = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16 | 
|  |  | 
|  | ;; Zero init with a memset. | 
|  | ;; | 
|  | ;;    void zeroInit() { int Z[3] = {0, 0, 0}; } | 
|  | ;; | 
|  | ;; Check that we get two dbg.assign intrinsics. The first linked to the alloca | 
|  | ;; and the second linked to the zero-init-memset, which should have a constant 0 | 
|  | ;; for the value component. | 
|  | define dso_local void @_Z8zeroInitv() #0 !dbg !31 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z8zeroInitv | 
|  | entry: | 
|  | %Z = alloca [3 x i32], align 4 | 
|  | ; CHECK:      %Z = alloca [3 x i32], align 4, !DIAssignID ![[ID_0:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_0:[0-9]+]], !DIExpression(), ![[ID_0]], ptr %Z, !DIExpression(), | 
|  | %0 = bitcast ptr %Z to ptr, !dbg !39 | 
|  | call void @llvm.lifetime.start.p0(i64 12, ptr %0) #5, !dbg !39 | 
|  | call void @llvm.dbg.declare(metadata ptr %Z, metadata !35, metadata !DIExpression()), !dbg !40 | 
|  | %1 = bitcast ptr %Z to ptr, !dbg !40 | 
|  | call void @llvm.memset.p0.i64(ptr align 4 %1, i8 0, i64 12, i1 false), !dbg !40 | 
|  | ; CHECK:       @llvm.memset{{.*}}, !DIAssignID ![[ID_1:[0-9]+]] | 
|  | ; CHECK-NEXT:  #dbg_assign(i8 0, ![[VAR_0]], !DIExpression(), ![[ID_1]], ptr %1, !DIExpression(), | 
|  | %2 = bitcast ptr %Z to ptr, !dbg !41 | 
|  | call void @llvm.lifetime.end.p0(i64 12, ptr %2) #5, !dbg !41 | 
|  | ret void, !dbg !41 | 
|  | } | 
|  |  | 
|  | ;; Init with a memcpy (from a global). | 
|  | ;; | 
|  | ;;    void memcpyInit() { int A[4] = {0, 1, 2, 3}; } | 
|  | ;; | 
|  | ;; Check that we get two dbg.assign intrinsics. The first linked to the alloca | 
|  | ;; and the second linked to the initialising memcpy, which should have a poison | 
|  | ;; value component. | 
|  | define dso_local void @_Z10memcpyInitv() #0 !dbg !42 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z10memcpyInitv | 
|  | entry: | 
|  | %A = alloca [4 x i32], align 16 | 
|  | ; CHECK:      %A = alloca [4 x i32], align 16, !DIAssignID ![[ID_2:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_1:[0-9]+]], !DIExpression(), ![[ID_2]], ptr %A, !DIExpression(), | 
|  | %0 = bitcast ptr %A to ptr, !dbg !48 | 
|  | call void @llvm.lifetime.start.p0(i64 16, ptr %0) #5, !dbg !48 | 
|  | call void @llvm.dbg.declare(metadata ptr %A, metadata !44, metadata !DIExpression()), !dbg !49 | 
|  | %1 = bitcast ptr %A to ptr, !dbg !49 | 
|  | call void @llvm.memcpy.p0.p0.i64(ptr align 16 %1, ptr align 16 @__const._Z10memcpyInitv.A, i64 16, i1 false), !dbg !49 | 
|  | ; CHECK:       @llvm.memcpy{{.*}}, !DIAssignID ![[ID_3:[0-9]+]] | 
|  | ; CHECK-NEXT:  #dbg_assign(i1 poison, ![[VAR_1]], !DIExpression(), ![[ID_3]], ptr %1, !DIExpression(), | 
|  | %2 = bitcast ptr %A to ptr, !dbg !50 | 
|  | call void @llvm.lifetime.end.p0(i64 16, ptr %2) #5, !dbg !50 | 
|  | ret void, !dbg !50 | 
|  | } | 
|  |  | 
|  | ;; Assign to field of local variable. | 
|  | ;; | 
|  | ;;    void setField() { | 
|  | ;;      Outer O; | 
|  | ;;      O.A.B = Value; | 
|  | ;;    } | 
|  | ;; | 
|  | ;; Check that we get two dbg.assign intrinsics. The first linked to the alloca | 
|  | ;; and the second linked to the store to O.A.B, which should include the | 
|  | ;; appropriate fragment info (SizeInBits: 32, OffsetInBits: 32) with respect to | 
|  | ;; the base variable. | 
|  | define dso_local void @_Z8setFieldv() #0 !dbg !51 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z8setFieldv | 
|  | entry: | 
|  | %O = alloca %struct.Outer, align 4 | 
|  | ; CHECK:      %O = alloca %struct.Outer, align 4, !DIAssignID ![[ID_4:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_2:[0-9]+]], !DIExpression(), ![[ID_4]], ptr %O, !DIExpression(), | 
|  | %0 = bitcast ptr %O to ptr, !dbg !58 | 
|  | call void @llvm.lifetime.start.p0(i64 16, ptr %0) #5, !dbg !58 | 
|  | call void @llvm.dbg.declare(metadata ptr %O, metadata !53, metadata !DIExpression()), !dbg !59 | 
|  | %1 = load i32, ptr @Value, align 4, !dbg !60, !tbaa !61 | 
|  | %A = getelementptr inbounds %struct.Outer, ptr %O, i32 0, i32 0, !dbg !65 | 
|  | %B = getelementptr inbounds %struct.Inner, ptr %A, i32 0, i32 1, !dbg !66 | 
|  | store i32 %1, ptr %B, align 4, !dbg !67, !tbaa !68 | 
|  | ; CHECK:      store i32 %1, ptr %B, align 4,{{.*}}!DIAssignID ![[ID_5:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i32 %1, ![[VAR_2]], !DIExpression(DW_OP_LLVM_fragment, 32, 32), ![[ID_5]], ptr %B, !DIExpression(), | 
|  | %2 = bitcast ptr %O to ptr, !dbg !71 | 
|  | call void @llvm.lifetime.end.p0(i64 16, ptr %2) #5, !dbg !71 | 
|  | ret void, !dbg !71 | 
|  | } | 
|  |  | 
|  | ;; Assign to (statically) unknown offset into a local variable. | 
|  | ;; | 
|  | ;;   void unknownOffset() { | 
|  | ;;     int A[2]; | 
|  | ;;     A[Index] = Value; | 
|  | ;;   } | 
|  | ;; | 
|  | ;; Check that we get only one dbg.assign intrinsic and that it is linked to the | 
|  | ;; alloca. The assignment doesn't get a dbg.assign intrinsic because we cannot | 
|  | ;; encode the fragment info for the assignment. | 
|  | ;; Note: This doesn't mean we lose the assignment entirely: the backend will | 
|  | ;; interpret the store (as it sees it) as an assignment. | 
|  | define dso_local void @_Z13unknownOffsetv() #0 !dbg !72 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z13unknownOffsetv | 
|  | entry: | 
|  | %A = alloca [2 x i32], align 4 | 
|  | ; CHECK:      %A = alloca [2 x i32], align 4, !DIAssignID ![[ID_6:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_3:[0-9]+]], !DIExpression(), ![[ID_6]], ptr %A, !DIExpression(), | 
|  | %0 = bitcast ptr %A to ptr, !dbg !78 | 
|  | call void @llvm.lifetime.start.p0(i64 8, ptr %0) #5, !dbg !78 | 
|  | call void @llvm.dbg.declare(metadata ptr %A, metadata !74, metadata !DIExpression()), !dbg !79 | 
|  | %1 = load i32, ptr @Value, align 4, !dbg !80, !tbaa !61 | 
|  | %2 = load i32, ptr @Index, align 4, !dbg !81, !tbaa !61 | 
|  | %idxprom = sext i32 %2 to i64, !dbg !82 | 
|  | %arrayidx = getelementptr inbounds [2 x i32], ptr %A, i64 0, i64 %idxprom, !dbg !82 | 
|  | store i32 %1, ptr %arrayidx, align 4, !dbg !83, !tbaa !61 | 
|  | %3 = bitcast ptr %A to ptr, !dbg !84 | 
|  | call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5, !dbg !84 | 
|  | ret void, !dbg !84 | 
|  | } | 
|  |  | 
|  | ;; Assignments to variables which share the same backing storage. | 
|  | ;; | 
|  | ;; Inner sharedAlloca() { | 
|  | ;;   if (Cond) { | 
|  | ;;     Inner A = InnerA; | 
|  | ;;     return A; | 
|  | ;;   } else { | 
|  | ;;     Inner B = InnerB; | 
|  | ;;     return B; | 
|  | ;;   } | 
|  | ;; } | 
|  | ;; | 
|  | define dso_local i64 @_Z12sharedAllocav() #0 !dbg !85 { | 
|  | ; CHECK-LABEL: define dso_local i64 @_Z12sharedAllocav | 
|  | entry: | 
|  | %retval = alloca %struct.Inner, align 4 | 
|  | ; CHECK:      %retval = alloca %struct.Inner, align 4, !DIAssignID ![[ID_7:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_4:[0-9]+]], !DIExpression(), ![[ID_7]], ptr %retval, !DIExpression(), | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_5:[0-9]+]], !DIExpression(), ![[ID_7]], ptr %retval, !DIExpression(), | 
|  | %0 = load i32, ptr @Cond, align 4, !dbg !94, !tbaa !61 | 
|  | %tobool = icmp ne i32 %0, 0, !dbg !94 | 
|  | br i1 %tobool, label %if.then, label %if.else, !dbg !95 | 
|  |  | 
|  | if.then:                                          ; preds = %entry | 
|  | ; CHECK:      if.then: | 
|  | call void @llvm.dbg.declare(metadata ptr %retval, metadata !89, metadata !DIExpression()), !dbg !96 | 
|  | %1 = bitcast ptr %retval to ptr, !dbg !97 | 
|  | call void @llvm.memcpy.p0.p0.i64(ptr align 4 %1, ptr align 4 @InnerA, i64 8, i1 false), !dbg !97, !tbaa.struct !98 | 
|  | ; CHECK:      call void @llvm.memcpy{{.*}}, !DIAssignID ![[ID_8:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_4]], !DIExpression(), ![[ID_8]], ptr %1, !DIExpression(), | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_5]], !DIExpression(), ![[ID_8]], ptr %1, !DIExpression(), | 
|  | br label %return, !dbg !99 | 
|  |  | 
|  | if.else:                                          ; preds = %entry | 
|  | ; CHECK:      if.else: | 
|  | call void @llvm.dbg.declare(metadata ptr %retval, metadata !92, metadata !DIExpression()), !dbg !100 | 
|  | %2 = bitcast ptr %retval to ptr, !dbg !101 | 
|  | call void @llvm.memcpy.p0.p0.i64(ptr align 4 %2, ptr align 4 @InnerB, i64 8, i1 false), !dbg !101, !tbaa.struct !98 | 
|  | ; CHECK:      call void @llvm.memcpy{{.*}}, !DIAssignID ![[ID_9:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_4]], !DIExpression(), ![[ID_9]], ptr %2, !DIExpression(), | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_5]], !DIExpression(), ![[ID_9]], ptr %2, !DIExpression(), | 
|  | br label %return, !dbg !102 | 
|  |  | 
|  | return:                                           ; preds = %if.else, %if.then | 
|  | %3 = bitcast ptr %retval to ptr, !dbg !103 | 
|  | %4 = load i64, ptr %3, align 4, !dbg !103 | 
|  | ret i64 %4, !dbg !103 | 
|  | } | 
|  |  | 
|  | ;; Caller-allocated memory for a local (sret parameter). | 
|  | ;; | 
|  | ;;    Large sret() { | 
|  | ;;      Large X = L; | 
|  | ;;      return X; | 
|  | ;;    } | 
|  | ;; | 
|  | ;; TODO: Currently not supported by `trackAssignments` (or the rest of the | 
|  | ;; assignment tracking pipeline). In lieu of being able to xfail a part of a | 
|  | ;; test, check that the dbg.declare is preserved so the test fails (and can be | 
|  | ;; updated) when this is fixed. | 
|  | define dso_local void @_Z4sretv(ptr noalias sret(%struct.Large) align 4 %agg.result) #0 !dbg !104 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z4sretv | 
|  | entry: | 
|  | ; CHECK: #dbg_declare | 
|  | call void @llvm.dbg.declare(metadata ptr %agg.result, metadata !108, metadata !DIExpression()), !dbg !109 | 
|  | %0 = bitcast ptr %agg.result to ptr, !dbg !110 | 
|  | call void @llvm.memcpy.p0.p0.i64(ptr align 4 %0, ptr align 4 @L, i64 40, i1 false), !dbg !110, !tbaa.struct !111 | 
|  | ret void, !dbg !113 | 
|  | } | 
|  |  | 
|  | ;; Caller-allocated memory for a local (byval parameter). | 
|  | ;; | 
|  | ;;    void byval(Large X) {} | 
|  | ;; | 
|  | ;; TODO: See comment for sret parameters above. | 
|  | define dso_local void @_Z5byval5Large(ptr noundef byval(%struct.Large) align 8 %X) #0 !dbg !114 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z5byval5Large | 
|  | entry: | 
|  | ; CHECK: #dbg_declare | 
|  | call void @llvm.dbg.declare(metadata ptr %X, metadata !118, metadata !DIExpression()), !dbg !119 | 
|  | ret void, !dbg !120 | 
|  | } | 
|  |  | 
|  | ;; Caller-allocated memory for a local (sret parameter) with address stored to | 
|  | ;; local alloca. | 
|  | ;; | 
|  | ;;    LCopyCtor indirectReturn() { | 
|  | ;;      LCopyCtor R; | 
|  | ;;      return R; | 
|  | ;;    } | 
|  | ;; | 
|  | ;; A sret parameter is used here also, but in this case clang emits an alloca | 
|  | ;; to store the passed-in address for the storage for the variable. The | 
|  | ;; dbg.declare for the local R therefore requires a DW_OP_deref expression. | 
|  | ;; TODO: This isn't supported yet, so check the dbg.declare remains. | 
|  | define dso_local void @_Z14indirectReturnv(ptr noalias sret(%struct.LCopyCtor) align 4 %agg.result) #0 !dbg !121 { | 
|  | ; CHECK-LABEL: define dso_local void @_Z14indirectReturnv | 
|  | entry: | 
|  | %result.ptr = alloca ptr, align 8 | 
|  | %0 = bitcast ptr %agg.result to ptr | 
|  | store ptr %0, ptr %result.ptr, align 8 | 
|  | call void @llvm.dbg.declare(metadata ptr %result.ptr, metadata !126, metadata !DIExpression(DW_OP_deref)), !dbg !127 | 
|  | ; CHECK: #dbg_declare | 
|  | call void @_ZN9LCopyCtorC1Ev(ptr noundef nonnull align 4 dereferenceable(16) %agg.result), !dbg !127 | 
|  | ret void, !dbg !128 | 
|  | } | 
|  |  | 
|  | ;; Inlined variable. | 
|  | ;; | 
|  | ;;    __attribute__((always_inline)) | 
|  | ;;    int sqr(int Y) { return Y * Y;  } | 
|  | ;;    int fun(int X) { return sqr(X); } | 
|  | ;; | 
|  | ;; Check that dbg.assign intrinsics correctly inherit the !dbg attachment from | 
|  | ;; the dbg.declre. | 
|  | define dso_local noundef i32 @_Z3funi(i32 noundef %X) !dbg !139 { | 
|  | ; CHECK-LABEL: define dso_local noundef i32 @_Z3funi | 
|  | entry: | 
|  | %Y.addr.i = alloca i32, align 4 | 
|  | ; CHECK:      %Y.addr.i = alloca i32, align 4, !DIAssignID ![[ID_10:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_6:[0-9]+]], !DIExpression(), ![[ID_10]], ptr %Y.addr.i, !DIExpression(), ![[DBG_0:[0-9]+]] | 
|  | %X.addr = alloca i32, align 4 | 
|  | ; CHECK-NEXT: %X.addr = alloca i32, align 4, !DIAssignID ![[ID_11:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i1 poison, ![[VAR_7:[0-9]+]], !DIExpression(), ![[ID_11]], ptr %X.addr, !DIExpression(), ![[DBG_1:[0-9]+]] | 
|  | store i32 %X, ptr %X.addr, align 4 | 
|  | ; CHECK-NEXT: store i32 %X, ptr %X.addr, align 4, !DIAssignID ![[ID_12:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i32 %X, ![[VAR_7]], !DIExpression(), ![[ID_12]], ptr %X.addr, !DIExpression(), ![[DBG_1]] | 
|  | call void @llvm.dbg.declare(metadata ptr %X.addr, metadata !140, metadata !DIExpression()), !dbg !141 | 
|  | %0 = load i32, ptr %X.addr, align 4, !dbg !142 | 
|  | store i32 %0, ptr %Y.addr.i, align 4 | 
|  | ; CHECK:      store i32 %0, ptr %Y.addr.i, align 4, !DIAssignID ![[ID_13:[0-9]+]] | 
|  | ; CHECK-NEXT: #dbg_assign(i32 %0, ![[VAR_6]], !DIExpression(), ![[ID_13]], ptr %Y.addr.i, !DIExpression(), ![[DBG_0]] | 
|  | call void @llvm.dbg.declare(metadata ptr %Y.addr.i, metadata !133, metadata !DIExpression()), !dbg !143 | 
|  | %1 = load i32, ptr %Y.addr.i, align 4, !dbg !145 | 
|  | %2 = load i32, ptr %Y.addr.i, align 4, !dbg !146 | 
|  | %mul.i = mul nsw i32 %1, %2, !dbg !147 | 
|  | ret i32 %mul.i, !dbg !148 | 
|  | } | 
|  |  | 
|  | declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1 | 
|  | declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 | 
|  | declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3 | 
|  | declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4 | 
|  | declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1 | 
|  | declare dso_local void @_ZN9LCopyCtorC1Ev(ptr noundef nonnull align 4 dereferenceable(16)) unnamed_addr | 
|  |  | 
|  | !llvm.dbg.cu = !{!2} | 
|  | !llvm.module.flags = !{!26, !27, !28, !29, !1000} | 
|  | !llvm.ident = !{!30} | 
|  |  | 
|  | ; CHECK-DAG: ![[VAR_0]] = !DILocalVariable(name: "Z", | 
|  | ; CHECK-DAG: ![[VAR_1]] = !DILocalVariable(name: "A", | 
|  | ; CHECK-DAG: ![[VAR_2]] = !DILocalVariable(name: "O", | 
|  | ; CHECK-DAG: ![[VAR_3]] = !DILocalVariable(name: "A", | 
|  | ; CHECK-DAG: ![[VAR_4]] = !DILocalVariable(name: "B", | 
|  | ; CHECK-DAG: ![[VAR_5]] = !DILocalVariable(name: "A", | 
|  | ; CHECK-DAG: ![[VAR_6]] = !DILocalVariable(name: "Y", arg: 1, scope: ![[SQR:[0-9]+]], | 
|  | ; CHECK-DAG: ![[VAR_7]] = !DILocalVariable(name: "X", arg: 1, scope: ![[FUN:[0-9]+]], | 
|  | ; CHECK-DAG: ![[SQR]] = distinct !DISubprogram(name: "sqr", | 
|  | ; CHECK-DAG: ![[FUN]] = distinct !DISubprogram(name: "fun", | 
|  | ; CHECK-DAG: ![[DBG_0]] = !DILocation(line: 0, scope: ![[SQR]], inlinedAt: ![[SQR_INLINE_SITE:[0-9]+]]) | 
|  | ; CHECK-DAG: [[SQR_INLINE_SITE]] = distinct !DILocation(line: 3, column: 25, scope: ![[FUN]]) | 
|  | ; CHECK-DAG: ![[DBG_1]] = !DILocation(line: 0, scope: ![[FUN]]) | 
|  |  | 
|  | !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) | 
|  | !1 = distinct !DIGlobalVariable(name: "Value", scope: !2, file: !3, line: 5, type: !7, isLocal: false, isDefinition: true) | 
|  | !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None) | 
|  | !3 = !DIFile(filename: "test.cpp", directory: "/") | 
|  | !4 = !{!0, !5, !8, !10, !16, !18} | 
|  | !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression()) | 
|  | !6 = distinct !DIGlobalVariable(name: "Index", scope: !2, file: !3, line: 5, type: !7, isLocal: false, isDefinition: true) | 
|  | !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) | 
|  | !8 = !DIGlobalVariableExpression(var: !9, expr: !DIExpression()) | 
|  | !9 = distinct !DIGlobalVariable(name: "Cond", scope: !2, file: !3, line: 5, type: !7, isLocal: false, isDefinition: true) | 
|  | !10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression()) | 
|  | !11 = distinct !DIGlobalVariable(name: "InnerA", scope: !2, file: !3, line: 6, type: !12, isLocal: false, isDefinition: true) | 
|  | !12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Inner", file: !3, line: 1, size: 64, flags: DIFlagTypePassByValue, elements: !13, identifier: "_ZTS5Inner") | 
|  | !13 = !{!14, !15} | 
|  | !14 = !DIDerivedType(tag: DW_TAG_member, name: "A", scope: !12, file: !3, line: 1, baseType: !7, size: 32) | 
|  | !15 = !DIDerivedType(tag: DW_TAG_member, name: "B", scope: !12, file: !3, line: 1, baseType: !7, size: 32, offset: 32) | 
|  | !16 = !DIGlobalVariableExpression(var: !17, expr: !DIExpression()) | 
|  | !17 = distinct !DIGlobalVariable(name: "InnerB", scope: !2, file: !3, line: 6, type: !12, isLocal: false, isDefinition: true) | 
|  | !18 = !DIGlobalVariableExpression(var: !19, expr: !DIExpression()) | 
|  | !19 = distinct !DIGlobalVariable(name: "L", scope: !2, file: !3, line: 7, type: !20, isLocal: false, isDefinition: true) | 
|  | !20 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Large", file: !3, line: 3, size: 320, flags: DIFlagTypePassByValue, elements: !21, identifier: "_ZTS5Large") | 
|  | !21 = !{!22} | 
|  | !22 = !DIDerivedType(tag: DW_TAG_member, name: "A", scope: !20, file: !3, line: 3, baseType: !23, size: 320) | 
|  | !23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 320, elements: !24) | 
|  | !24 = !{!25} | 
|  | !25 = !DISubrange(count: 10) | 
|  | !26 = !{i32 7, !"Dwarf Version", i32 5} | 
|  | !27 = !{i32 2, !"Debug Info Version", i32 3} | 
|  | !28 = !{i32 1, !"wchar_size", i32 4} | 
|  | !29 = !{i32 7, !"uwtable", i32 1} | 
|  | !30 = !{!"clang version 14.0.0"} | 
|  | !31 = distinct !DISubprogram(name: "zeroInit", linkageName: "_Z8zeroInitv", scope: !3, file: !3, line: 9, type: !32, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !34) | 
|  | !32 = !DISubroutineType(types: !33) | 
|  | !33 = !{null} | 
|  | !34 = !{!35} | 
|  | !35 = !DILocalVariable(name: "Z", scope: !31, file: !3, line: 9, type: !36) | 
|  | !36 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 96, elements: !37) | 
|  | !37 = !{!38} | 
|  | !38 = !DISubrange(count: 3) | 
|  | !39 = !DILocation(line: 9, column: 19, scope: !31) | 
|  | !40 = !DILocation(line: 9, column: 23, scope: !31) | 
|  | !41 = !DILocation(line: 9, column: 41, scope: !31) | 
|  | !42 = distinct !DISubprogram(name: "memcpyInit", linkageName: "_Z10memcpyInitv", scope: !3, file: !3, line: 11, type: !32, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !43) | 
|  | !43 = !{!44} | 
|  | !44 = !DILocalVariable(name: "A", scope: !42, file: !3, line: 11, type: !45) | 
|  | !45 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !46) | 
|  | !46 = !{!47} | 
|  | !47 = !DISubrange(count: 4) | 
|  | !48 = !DILocation(line: 11, column: 21, scope: !42) | 
|  | !49 = !DILocation(line: 11, column: 25, scope: !42) | 
|  | !50 = !DILocation(line: 11, column: 46, scope: !42) | 
|  | !51 = distinct !DISubprogram(name: "setField", linkageName: "_Z8setFieldv", scope: !3, file: !3, line: 13, type: !32, scopeLine: 13, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !52) | 
|  | !52 = !{!53} | 
|  | !53 = !DILocalVariable(name: "O", scope: !51, file: !3, line: 14, type: !54) | 
|  | !54 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Outer", file: !3, line: 2, size: 128, flags: DIFlagTypePassByValue, elements: !55, identifier: "_ZTS5Outer") | 
|  | !55 = !{!56, !57} | 
|  | !56 = !DIDerivedType(tag: DW_TAG_member, name: "A", scope: !54, file: !3, line: 2, baseType: !12, size: 64) | 
|  | !57 = !DIDerivedType(tag: DW_TAG_member, name: "B", scope: !54, file: !3, line: 2, baseType: !12, size: 64, offset: 64) | 
|  | !58 = !DILocation(line: 14, column: 3, scope: !51) | 
|  | !59 = !DILocation(line: 14, column: 9, scope: !51) | 
|  | !60 = !DILocation(line: 15, column: 11, scope: !51) | 
|  | !61 = !{!62, !62, i64 0} | 
|  | !62 = !{!"int", !63, i64 0} | 
|  | !63 = !{!"omnipotent char", !64, i64 0} | 
|  | !64 = !{!"Simple C++ TBAA"} | 
|  | !65 = !DILocation(line: 15, column: 5, scope: !51) | 
|  | !66 = !DILocation(line: 15, column: 7, scope: !51) | 
|  | !67 = !DILocation(line: 15, column: 9, scope: !51) | 
|  | !68 = !{!69, !62, i64 4} | 
|  | !69 = !{!"_ZTS5Outer", !70, i64 0, !70, i64 8} | 
|  | !70 = !{!"_ZTS5Inner", !62, i64 0, !62, i64 4} | 
|  | !71 = !DILocation(line: 16, column: 1, scope: !51) | 
|  | !72 = distinct !DISubprogram(name: "unknownOffset", linkageName: "_Z13unknownOffsetv", scope: !3, file: !3, line: 18, type: !32, scopeLine: 18, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !73) | 
|  | !73 = !{!74} | 
|  | !74 = !DILocalVariable(name: "A", scope: !72, file: !3, line: 19, type: !75) | 
|  | !75 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 64, elements: !76) | 
|  | !76 = !{!77} | 
|  | !77 = !DISubrange(count: 2) | 
|  | !78 = !DILocation(line: 19, column: 3, scope: !72) | 
|  | !79 = !DILocation(line: 19, column: 7, scope: !72) | 
|  | !80 = !DILocation(line: 20, column: 14, scope: !72) | 
|  | !81 = !DILocation(line: 20, column: 5, scope: !72) | 
|  | !82 = !DILocation(line: 20, column: 3, scope: !72) | 
|  | !83 = !DILocation(line: 20, column: 12, scope: !72) | 
|  | !84 = !DILocation(line: 21, column: 1, scope: !72) | 
|  | !85 = distinct !DISubprogram(name: "sharedAlloca", linkageName: "_Z12sharedAllocav", scope: !3, file: !3, line: 23, type: !86, scopeLine: 23, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !88) | 
|  | !86 = !DISubroutineType(types: !87) | 
|  | !87 = !{!12} | 
|  | !88 = !{!89, !92} | 
|  | !89 = !DILocalVariable(name: "A", scope: !90, file: !3, line: 25, type: !12) | 
|  | !90 = distinct !DILexicalBlock(scope: !91, file: !3, line: 24, column: 13) | 
|  | !91 = distinct !DILexicalBlock(scope: !85, file: !3, line: 24, column: 7) | 
|  | !92 = !DILocalVariable(name: "B", scope: !93, file: !3, line: 28, type: !12) | 
|  | !93 = distinct !DILexicalBlock(scope: !91, file: !3, line: 27, column: 10) | 
|  | !94 = !DILocation(line: 24, column: 7, scope: !91) | 
|  | !95 = !DILocation(line: 24, column: 7, scope: !85) | 
|  | !96 = !DILocation(line: 25, column: 11, scope: !90) | 
|  | !97 = !DILocation(line: 25, column: 15, scope: !90) | 
|  | !98 = !{i64 0, i64 4, !61, i64 4, i64 4, !61} | 
|  | !99 = !DILocation(line: 26, column: 5, scope: !90) | 
|  | !100 = !DILocation(line: 28, column: 11, scope: !93) | 
|  | !101 = !DILocation(line: 28, column: 15, scope: !93) | 
|  | !102 = !DILocation(line: 29, column: 5, scope: !93) | 
|  | !103 = !DILocation(line: 31, column: 1, scope: !85) | 
|  | !104 = distinct !DISubprogram(name: "sret", linkageName: "_Z4sretv", scope: !3, file: !3, line: 33, type: !105, scopeLine: 33, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !107) | 
|  | !105 = !DISubroutineType(types: !106) | 
|  | !106 = !{!20} | 
|  | !107 = !{!108} | 
|  | !108 = !DILocalVariable(name: "X", scope: !104, file: !3, line: 34, type: !20) | 
|  | !109 = !DILocation(line: 34, column: 9, scope: !104) | 
|  | !110 = !DILocation(line: 34, column: 13, scope: !104) | 
|  | !111 = !{i64 0, i64 40, !112} | 
|  | !112 = !{!63, !63, i64 0} | 
|  | !113 = !DILocation(line: 35, column: 3, scope: !104) | 
|  | !114 = distinct !DISubprogram(name: "byval", linkageName: "_Z5byval5Large", scope: !3, file: !3, line: 38, type: !115, scopeLine: 38, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !117) | 
|  | !115 = !DISubroutineType(types: !116) | 
|  | !116 = !{null, !20} | 
|  | !117 = !{!118} | 
|  | !118 = !DILocalVariable(name: "X", arg: 1, scope: !114, file: !3, line: 38, type: !20) | 
|  | !119 = !DILocation(line: 38, column: 18, scope: !114) | 
|  | !120 = !DILocation(line: 38, column: 22, scope: !114) | 
|  | !121 = distinct !DISubprogram(name: "indirectReturn", linkageName: "_Z14indirectReturnv", scope: !2, file: !3, line: 41, type: !122, scopeLine: 41, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !125) | 
|  | !122 = !DISubroutineType(types: !123) | 
|  | !123 = !{!124} | 
|  | !124 = !DICompositeType(tag: DW_TAG_structure_type, name: "LCopyCtor", file: !3, line: 4, size: 128, flags: DIFlagFwdDecl | DIFlagNonTrivial, identifier: "_ZTS9LCopyCtor") | 
|  | !125 = !{} | 
|  | !126 = !DILocalVariable(name: "R", scope: !121, file: !3, line: 42, type: !124) | 
|  | !127 = !DILocation(line: 42, column: 13, scope: !121) | 
|  | !128 = !DILocation(line: 43, column: 3, scope: !121) | 
|  | !129 = distinct !DISubprogram(name: "sqr", linkageName: "_Z3sqri", scope: !2, file: !3, line: 2, type: !130, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !132) | 
|  | !130 = !DISubroutineType(types: !131) | 
|  | !131 = !{!7, !7} | 
|  | !132 = !{} | 
|  | !133 = !DILocalVariable(name: "Y", arg: 1, scope: !129, file: !3, line: 2, type: !7) | 
|  | !134 = !DILocation(line: 2, column: 13, scope: !129) | 
|  | !135 = !DILocation(line: 2, column: 25, scope: !129) | 
|  | !136 = !DILocation(line: 2, column: 29, scope: !129) | 
|  | !137 = !DILocation(line: 2, column: 27, scope: !129) | 
|  | !138 = !DILocation(line: 2, column: 18, scope: !129) | 
|  | !139 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funi", scope: !2, file: !3, line: 3, type: !130, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !2, retainedNodes: !132) | 
|  | !140 = !DILocalVariable(name: "X", arg: 1, scope: !139, file: !3, line: 3, type: !7) | 
|  | !141 = !DILocation(line: 3, column: 13, scope: !139) | 
|  | !142 = !DILocation(line: 3, column: 29, scope: !139) | 
|  | !143 = !DILocation(line: 2, column: 13, scope: !129, inlinedAt: !144) | 
|  | !144 = distinct !DILocation(line: 3, column: 25, scope: !139) | 
|  | !145 = !DILocation(line: 2, column: 25, scope: !129, inlinedAt: !144) | 
|  | !146 = !DILocation(line: 2, column: 29, scope: !129, inlinedAt: !144) | 
|  | !147 = !DILocation(line: 2, column: 27, scope: !129, inlinedAt: !144) | 
|  | !148 = !DILocation(line: 3, column: 18, scope: !139) | 
|  | !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} |