--- /dev/null
+; RUN: opt -passes='loop(require<access-info>),function(loop-vectorize)' -disable-output -pass-remarks-analysis=loop-vectorize < %s 2>&1 | FileCheck %s
+; RUN: opt < %s -passes='loop(require<access-info>),function(loop-vectorize)' -o /dev/null -pass-remarks-output=%t.yaml
+; RUN: cat %t.yaml | FileCheck -check-prefix=YAML %s
+
+target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
+
+; // a) Dependence::NoDep
+; // Loop containing only reads (here of the array A) does not hinder vectorization
+; void test_nodep(int n, int* A, int* B) {
+; for(int i = 1; i < n ; ++i) {
+; B[i] = A[i-1] + A[i+2];
+; }
+; }
+
+; CHECK-NOT: remark: source.c:{{0-9]+}}:{{[0-9]+}}:
+
+define void @test_nodep(i64 %n, i32* nocapture readonly %A, i32* nocapture %B) !dbg !44 {
+entry:
+ %cmp12 = icmp sgt i64 %n, 1
+ br i1 %cmp12, label %for.body, label %for.cond.cleanup
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 1, %entry ], [ %indvars.iv.next, %for.body ]
+ %0 = add nsw i64 %indvars.iv, -1
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %0, !dbg !61
+ %1 = load i32, i32* %arrayidx, align 4, !dbg !61
+ %2 = add nuw nsw i64 %indvars.iv, 2
+ %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %2, !dbg !63
+ %3 = load i32, i32* %arrayidx2, align 4, !dbg !63
+ %add3 = add nsw i32 %3, %1
+ %arrayidx5 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
+ store i32 %add3, i32* %arrayidx5, align 4
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+
+; // b) Dependence::Forward
+; // Loop gets vectorized since it contains only a forward
+; // dependency between A[i-2] and A[i]
+; void test_forward(int n, int* A, int* B) {
+; for(int i=1; i < n; ++i) {
+; A[i] = 10;
+; B[i] = A[i-2];
+; }
+; }
+
+; CHECK-NOT: remark: source.c:{{0-9]+}}:{{[0-9]+}}:
+define dso_local void @test_forward(i64 %n, i32* nocapture %A, i32* nocapture %B) !dbg !70 {
+entry:
+ %cmp11 = icmp sgt i64 %n, 1
+ br i1 %cmp11, label %for.body, label %for.cond.cleanup, !dbg !81
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 1, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !83
+ store i32 10, i32* %arrayidx, align 4
+ %0 = add nsw i64 %indvars.iv, -2
+ %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %0, !dbg !87
+ %1 = load i32, i32* %arrayidx2, align 4, !dbg !87
+ %arrayidx4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv, !dbg !88
+ store i32 %1, i32* %arrayidx4, align 4, !dbg !89
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body, !dbg !81
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+
+; // c) Dependence::BackwardVectorizable
+; // Loop gets vectorized since it contains a backward dependency
+; // between A[i] and A[i-4], but the dependency distance (4) is
+; // greater than the minimum possible VF (2 in this case)
+; void test_backwardVectorizable(int n, int* A) {
+; for(int i=4; i < n; ++i) {
+; A[i] = A[i-4] + 1;
+; }
+; }
+
+; CHECK-NOT: remark: source.c:{{0-9]+}}:{{[0-9]+}}:
+
+define dso_local void @test_backwardVectorizable(i64 %n, i32* nocapture %A) !dbg !93 {
+entry:
+ %cmp8 = icmp sgt i64 %n, 4
+ br i1 %cmp8, label %for.body, label %for.cond.cleanup
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 4, %entry ], [ %indvars.iv.next, %for.body ]
+ %0 = add nsw i64 %indvars.iv, -4, !dbg !106
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %0, !dbg !108
+ %1 = load i32, i32* %arrayidx, align 4, !dbg !108
+ %add = add nsw i32 %1, 1
+ %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !110
+ store i32 %add, i32* %arrayidx2, align 4, !dbg !111
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+; // d) Dependence::Backward
+; // Loop does not get vectorized since it contains a backward
+; // dependency between A[i] and A[i+3].
+; void test_backward_dep(int n, int *A) {
+; for (int i = 1; i <= n - 3; i += 3) {
+; A[i] = A[i-1];
+; A[i+1] = A[i+3];
+; }
+; }
+
+; CHECK: remark: source.c:48:14: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
+; CHECK-NEXT: Backward loop carried data dependence. Memory location is the same as accessed at source.c:47:5
+
+define void @test_backward_dep(i64 %n, i32* nocapture %A) {
+entry:
+ %cmp.not19 = icmp slt i64 %n, 4
+ br i1 %cmp.not19, label %for.cond.cleanup, label %for.body.preheader
+
+for.body.preheader: ; preds = %entry
+ %sub = add nsw i64 %n, -3
+ br label %for.body
+
+for.body: ; preds = %for.body.preheader, %for.body
+ %indvars.iv = phi i64 [ 1, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
+ %0 = add nsw i64 %indvars.iv, -1
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %0
+ %1 = load i32, i32* %arrayidx, align 8
+ %arrayidx3 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !157
+ store i32 %1, i32* %arrayidx3, align 8
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 3
+ %arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next, !dbg !160
+ %2 = load i32, i32* %arrayidx5, align 8, !dbg !160
+ %3 = add nuw nsw i64 %indvars.iv, 1
+ %arrayidx8 = getelementptr inbounds i32, i32* %A, i64 %3
+ store i32 %2, i32* %arrayidx8, align 8
+ %cmp.not = icmp ugt i64 %indvars.iv.next, %n
+ br i1 %cmp.not, label %for.cond.cleanup, label %for.body
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+; // e) Dependence::ForwardButPreventsForwarding
+; // Loop does not get vectorized despite only having a forward
+; // dependency between A[i] and A[i-3].
+; // This is because the store-to-load forwarding distance (here 3)
+; // needs to be a multiple of vector factor otherwise the
+; // store (A[5:6] in i=5) and load (A[4:5],A[6:7] in i=7,9) are unaligned.
+; void test_forwardButPreventsForwarding_dep(int n, int* A, int* B) {
+; for(int i=3; i < n; ++i) {
+; A[i] = 10;
+; B[i] = A[i-3];
+; }
+; }
+
+; CHECK: remark: source.c:61:12: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
+; CHECK-NEXT: Forward loop carried data dependence that prevents store-to-load forwarding. Memory location is the same as accessed at source.c:60:5
+
+define void @test_forwardButPreventsForwarding_dep(i64 %n, i32* nocapture %A, i32* nocapture %B) !dbg !166 {
+entry:
+ %cmp11 = icmp sgt i64 %n, 3
+ br i1 %cmp11, label %for.body, label %for.cond.cleanup
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 3, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !179
+ store i32 10, i32* %arrayidx, align 4
+ %0 = add nsw i64 %indvars.iv, -3
+ %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %0, !dbg !183
+ %1 = load i32, i32* %arrayidx2, align 4, !dbg !183
+ %arrayidx4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
+ store i32 %1, i32* %arrayidx4, align 4
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+; // f) Dependence::BackwardVectorizableButPreventsForwarding
+; // Loop does not get vectorized despite having a backward
+; // but vectorizable dependency between A[i] and A[i-15].
+; //
+; // This is because the store-to-load forwarding distance (here 15)
+; // needs to be a multiple of vector factor otherwise
+; // store (A[16:17] in i=16) and load (A[15:16], A[17:18] in i=30,32) are unaligned.
+; void test_backwardVectorizableButPreventsForwarding(int n, int* A) {
+; for(int i=15; i < n; ++i) {
+; A[i] = A[i-2] + A[i-15];
+; }
+; }
+
+; CHECK: remark: source.c:74:5: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
+; CHECK: Backward loop carried data dependence that prevents store-to-load forwarding. Memory location is the same as accessed at source.c:74:21
+
+define void @test_backwardVectorizableButPreventsForwarding(i64 %n, i32* nocapture %A) !dbg !189 {
+entry:
+ %cmp13 = icmp sgt i64 %n, 15
+ br i1 %cmp13, label %for.body, label %for.cond.cleanup
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 15, %entry ], [ %indvars.iv.next, %for.body ]
+ %0 = add nsw i64 %indvars.iv, -2
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %0
+ %1 = load i32, i32* %arrayidx, align 4
+ %2 = add nsw i64 %indvars.iv, -15
+ %arrayidx3 = getelementptr inbounds i32, i32* %A, i64 %2, !dbg !207
+ %3 = load i32, i32* %arrayidx3, align 4
+ %add = add nsw i32 %3, %1
+ %arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !209
+ store i32 %add, i32* %arrayidx5, align 4, !dbg !209
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+; // g) Dependence::Unknown
+; // Different stride lengths
+; void test_unknown_dep(int n, int* A) {
+; for(int i=0; i < n; ++i) {
+; A[(i+1)*4] = 10;
+; A[i] = 100;
+; }
+; }
+
+; CHECK: remark: source.c:83:7: loop not vectorized: unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
+; CHECK: Unknown data dependence. Memory location is the same as accessed at source.c:82:7
+
+define void @test_unknown_dep(i64 %n, i32* nocapture %A) !dbg !214 {
+entry:
+ %cmp8 = icmp sgt i64 %n, 0
+ br i1 %cmp8, label %for.body, label %for.cond.cleanup
+
+for.body: ; preds = %entry, %for.body
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %0 = shl nsw i64 %indvars.iv.next, 2
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %0, !dbg !229
+ store i32 10, i32* %arrayidx, align 4
+ %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !231
+ store i32 100, i32* %arrayidx2, align 4, !dbg !231
+ %exitcond.not = icmp eq i64 %indvars.iv.next, %n
+ br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+ for.cond.cleanup: ; preds = %for.body, %entry
+ ret void
+}
+
+; YAML: --- !Analysis
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: UnsafeDep
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 48, Column: 14 }
+; YAML-NEXT: Function: test_backward_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: 'loop not vectorized: '
+; YAML-NEXT: - String: 'unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop'
+; YAML-NEXT: - String: "\nBackward loop carried data dependence."
+; YAML-NEXT: - String: ' Memory location is the same as accessed at '
+; YAML-NEXT: - Location: 'source.c:47:5'
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 47, Column: 5 }
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Missed
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: MissedDetails
+; YAML-NEXT: Function: test_backward_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: loop not vectorized
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Analysis
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: UnsafeDep
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 61, Column: 12 }
+; YAML-NEXT: Function: test_forwardButPreventsForwarding_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: 'loop not vectorized: '
+; YAML-NEXT: - String: 'unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop'
+; YAML-NEXT: - String: "\nForward loop carried data dependence that prevents store-to-load forwarding."
+; YAML-NEXT: - String: ' Memory location is the same as accessed at '
+; YAML-NEXT: - Location: 'source.c:60:5'
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 60, Column: 5 }
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Missed
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: MissedDetails
+; YAML-NEXT: Function: test_forwardButPreventsForwarding_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: loop not vectorized
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Analysis
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: UnsafeDep
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 74, Column: 5 }
+; YAML-NEXT: Function: test_backwardVectorizableButPreventsForwarding
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: 'loop not vectorized: '
+; YAML-NEXT: - String: 'unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop'
+; YAML-NEXT: - String: "\nBackward loop carried data dependence that prevents store-to-load forwarding."
+; YAML-NEXT: - String: ' Memory location is the same as accessed at '
+; YAML-NEXT: - Location: 'source.c:74:21'
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 74, Column: 21 }
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Missed
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: MissedDetails
+; YAML-NEXT: Function: test_backwardVectorizableButPreventsForwarding
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: loop not vectorized
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Analysis
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: UnsafeDep
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 83, Column: 7 }
+; YAML-NEXT: Function: test_unknown_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: 'loop not vectorized: '
+; YAML-NEXT: - String: 'unsafe dependent memory operations in loop. Use #pragma loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop'
+; YAML-NEXT: - String: "\nUnknown data dependence."
+; YAML-NEXT: - String: ' Memory location is the same as accessed at '
+; YAML-NEXT: - Location: 'source.c:82:7'
+; YAML-NEXT: DebugLoc: { File: source.c, Line: 82, Column: 7 }
+; YAML-NEXT: ...
+; YAML-NEXT: --- !Missed
+; YAML-NEXT: Pass: loop-vectorize
+; YAML-NEXT: Name: MissedDetails
+; YAML-NEXT: Function: test_unknown_dep
+; YAML-NEXT: Args:
+; YAML-NEXT: - String: loop not vectorized
+; YAML-NEXT: ...
+
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!4}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 14.0.0 (https://github.com/llvm/llvm-project.git 54f0f826c5c7d0ff16c230b259cb6aad33e18d97)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "source.c", directory: "")
+!2 = !{}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!44 = distinct !DISubprogram(name: "test_nodep", scope: !1, file: !1, line: 14, type: !45, scopeLine: 14, unit: !0, retainedNodes: !2)
+!45 = !DISubroutineType(types: !46)
+!46 = !{null, !18, !16, !16}
+!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 64)
+!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!18 = !DIBasicType(name: "int", size: 64, encoding: DW_ATE_signed)
+!52 = distinct !DILexicalBlock(scope: !44, file: !1, line: 15, column: 3)
+!56 = distinct !DILexicalBlock(scope: !52, file: !1, line: 15, column: 3)
+!60 = distinct !DILexicalBlock(scope: !56, file: !1, line: 15, column: 31)
+!61 = !DILocation(line: 16, column: 12, scope: !60)
+!63 = !DILocation(line: 16, column: 21, scope: !60)
+!70 = distinct !DISubprogram(name: "test_forward", scope: !1, file: !1, line: 24, type: !45, scopeLine: 24, unit: !0, retainedNodes: !2)
+!77 = distinct !DILexicalBlock(scope: !70, file: !1, line: 25, column: 3)
+!80 = distinct !DILexicalBlock(scope: !77, file: !1, line: 25, column: 3)
+!81 = !DILocation(line: 25, column: 3, scope: !77)
+!83 = !DILocation(line: 26, column: 5, scope: !84)
+!84 = distinct !DILexicalBlock(scope: !80, file: !1, line: 25, column: 28)
+!87 = !DILocation(line: 27, column: 12, scope: !84)
+!88 = !DILocation(line: 27, column: 5, scope: !84)
+!89 = !DILocation(line: 27, column: 10, scope: !84)
+!93 = distinct !DISubprogram(name: "test_backwardVectorizable", scope: !1, file: !1, line: 36, type: !95, scopeLine: 36, unit: !0, retainedNodes: !2)
+!95 = !DISubroutineType(types: !96)
+!96 = !{null, !18, !16}
+!99 = distinct !DILexicalBlock(scope: !93, file: !1, line: 37, column: 3)
+!103 = distinct !DILexicalBlock(scope: !99, file: !1, line: 37, column: 3)
+!106 = !DILocation(line: 38, column: 15, scope: !107)
+!107 = distinct !DILexicalBlock(scope: !103, file: !1, line: 37, column: 28)
+!108 = !DILocation(line: 38, column: 12, scope: !107)
+!110 = !DILocation(line: 38, column: 5, scope: !107)
+!111 = !DILocation(line: 38, column: 10, scope: !107)
+!136 = distinct !DISubprogram(name: "test_backward_dep", scope: !1, file: !1, line: 45, type: !95, scopeLine: 45, unit: !0, retainedNodes: !2)
+!145 = distinct !DILexicalBlock(scope: !136, file: !1, line: 46, column: 3)
+!149 = distinct !DILexicalBlock(scope: !145, file: !1, line: 46, column: 3)
+!153 = distinct !DILexicalBlock(scope: !149, file: !1, line: 46, column: 39)
+!157 = !DILocation(line: 47, column: 5, scope: !153)
+!160 = !DILocation(line: 48, column: 14, scope: !153)
+!166 = distinct !DISubprogram(name: "test_forwardButPreventsForwarding_dep", scope: !1, file: !1, line: 58, type: !45, scopeLine: 58, unit: !0, retainedNodes: !2)
+!172 = distinct !DILexicalBlock(scope: !166, file: !1, line: 59, column: 3)
+!176 = distinct !DILexicalBlock(scope: !172, file: !1, line: 59, column: 3)
+!179 = !DILocation(line: 60, column: 5, scope: !180)
+!180 = distinct !DILexicalBlock(scope: !176, file: !1, line: 59, column: 28)
+!183 = !DILocation(line: 61, column: 12, scope: !180)
+!189 = distinct !DISubprogram(name: "test_backwardVectorizableButPreventsForwarding", scope: !1, file: !1, line: 72, type: !95, scopeLine: 72, unit: !0, retainedNodes: !2)
+!196 = distinct !DILexicalBlock(scope: !189, file: !1, line: 73, column: 3)
+!200 = distinct !DILexicalBlock(scope: !196, file: !1, line: 73, column: 3)
+!204 = distinct !DILexicalBlock(scope: !200, file: !1, line: 73, column: 29)
+!207 = !DILocation(line: 74, column: 21, scope: !204)
+!209 = !DILocation(line: 74, column: 5, scope: !204)
+!214 = distinct !DISubprogram(name: "test_unknown_dep", scope: !1, file: !1, line: 80, type: !95, scopeLine: 80, unit: !0, retainedNodes: !2)
+!219 = distinct !DILexicalBlock(scope: !214, file: !1, line: 81, column: 3)
+!223 = distinct !DILexicalBlock(scope: !219, file: !1, line: 81, column: 3)
+!227 = distinct !DILexicalBlock(scope: !223, file: !1, line: 81, column: 28)
+!229 = !DILocation(line: 82, column: 7, scope: !227)
+!231 = !DILocation(line: 83, column: 7, scope: !227)