| ; RUN: opt -loop-reduce -S %s | FileCheck %s |
| |
| ;; This test ensures that no attempt is made to translate long SCEVs into |
| ;; DIExpressions. Attempting the translation can use excessive resources and |
| ;; result in crashes. |
| |
| 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" |
| |
| @c = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0 |
| @b = dso_local local_unnamed_addr global i32 0, align 4, !dbg !9 |
| @a = dso_local local_unnamed_addr global i32 0, align 4, !dbg !5 |
| |
| define dso_local i32 @d() local_unnamed_addr #0 !dbg !16 { |
| entry: |
| %b.promoted = load i32, ptr @b, align 4, !tbaa !29 |
| %mul = mul nsw i32 %b.promoted, %b.promoted, !dbg !33 |
| %mul.1 = mul nsw i32 %mul, %mul, !dbg !33 |
| %mul.2 = mul nsw i32 %mul.1, %mul.1, !dbg !33 |
| %mul.3 = mul nsw i32 %mul.2, %mul.2, !dbg !33 |
| %mul.4 = mul nsw i32 %mul.3, %mul.3, !dbg !33 |
| %mul.5 = mul nsw i32 %mul.4, %mul.4, !dbg !33 |
| %mul.6 = mul nsw i32 %mul.5, %mul.5, !dbg !33 |
| %mul.7 = mul nsw i32 %mul.6, %mul.6, !dbg !33 |
| %mul.8 = mul nsw i32 %mul.7, %mul.7, !dbg !33 |
| %mul.9 = mul nsw i32 %mul.8, %mul.8, !dbg !33 |
| store i32 49, ptr @c, align 4, !dbg !36, !tbaa !29 |
| store i32 %mul.9, ptr @b, align 4, !dbg !37, !tbaa !29 |
| %.pr = load i32, ptr @a, align 4, !dbg !38, !tbaa !29 |
| %tobool.not8 = icmp eq i32 %.pr, 0, !dbg !39 |
| br i1 %tobool.not8, label %for.end3, label %for.body2.preheader, !dbg !39 |
| |
| for.body2.preheader: ; preds = %entry |
| br label %for.body2, !dbg !39 |
| |
| for.body2: ; preds = %for.body2.preheader, %for.body2 |
| %0 = phi i32 [ %sub, %for.body2 ], [ %.pr, %for.body2.preheader ] |
| %sub = sub nsw i32 %0, %mul.9, !dbg !40 |
| ; CHECK: call void @llvm.dbg.value(metadata !DIArgList(i32 poison, i32 %mul.9), metadata ![[VAR_e:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_minus, DW_OP_LLVM_convert, 32, DW_ATE_signed, DW_OP_LLVM_convert, 64, DW_ATE_signed, DW_OP_stack_value)) |
| call void @llvm.dbg.value(metadata i32 %sub, metadata !20, metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_signed, DW_OP_LLVM_convert, 64, DW_ATE_signed, DW_OP_stack_value)), !dbg !41 |
| %tobool.not = icmp eq i32 %sub, 0, !dbg !39 |
| br i1 %tobool.not, label %for.cond1.for.end3_crit_edge, label %for.body2, !dbg !39, !llvm.loop !42 |
| |
| for.cond1.for.end3_crit_edge: ; preds = %for.body2 |
| store i32 0, ptr @a, align 4, !dbg !40, !tbaa !29 |
| br label %for.end3, !dbg !39 |
| |
| for.end3: ; preds = %for.cond1.for.end3_crit_edge, %entry |
| ret i32 poison, !dbg !45 |
| } |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| !llvm.dbg.cu = !{!2} |
| !llvm.module.flags = !{!11, !12, !13, !14} |
| !llvm.ident = !{!15} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !7, line: 2, type: !8, isLocal: false, isDefinition: true) |
| !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None) |
| !3 = !DIFile(filename: "test.c", directory: "/test") |
| !4 = !{!5, !9, !0} |
| !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression()) |
| !6 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !7, line: 2, type: !8, isLocal: false, isDefinition: true) |
| !7 = !DIFile(filename: "./test.c", directory: "/test") |
| !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression()) |
| !10 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !7, line: 2, type: !8, isLocal: false, isDefinition: true) |
| !11 = !{i32 7, !"Dwarf Version", i32 4} |
| !12 = !{i32 2, !"Debug Info Version", i32 3} |
| !13 = !{i32 1, !"wchar_size", i32 4} |
| !14 = !{i32 7, !"uwtable", i32 1} |
| !15 = !{!"clang version 14.0.0"} |
| !16 = distinct !DISubprogram(name: "d", scope: !7, file: !7, line: 3, type: !17, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !19) |
| !17 = !DISubroutineType(types: !18) |
| !18 = !{!8} |
| !19 = !{!20} |
| ; CHECK: ![[VAR_e]] = !DILocalVariable(name: "e", scope: !21, file: !7, line: 8, type: !24) |
| !20 = !DILocalVariable(name: "e", scope: !21, file: !7, line: 8, type: !24) |
| !21 = distinct !DILexicalBlock(scope: !22, file: !7, line: 7, column: 14) |
| !22 = distinct !DILexicalBlock(scope: !23, file: !7, line: 7, column: 3) |
| !23 = distinct !DILexicalBlock(scope: !16, file: !7, line: 7, column: 3) |
| !24 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint64_t", file: !25, line: 27, baseType: !26) |
| !25 = !DIFile(filename: "/usr/include/x86_64-linux-gnu/bits/stdint-uintn.h", directory: "") |
| !26 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint64_t", file: !27, line: 44, baseType: !28) |
| !27 = !DIFile(filename: "/usr/include/x86_64-linux-gnu/bits/types.h", directory: "") |
| !28 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) |
| !29 = !{!30, !30, i64 0} |
| !30 = !{!"int", !31, i64 0} |
| !31 = !{!"omnipotent char", !32, i64 0} |
| !32 = !{!"Simple C/C++ TBAA"} |
| !33 = !DILocation(line: 6, column: 7, scope: !34) |
| !34 = distinct !DILexicalBlock(scope: !35, file: !7, line: 5, column: 3) |
| !35 = distinct !DILexicalBlock(scope: !16, file: !7, line: 5, column: 3) |
| !36 = !DILocation(line: 0, scope: !16) |
| !37 = !DILocation(line: 0, scope: !34) |
| !38 = !DILocation(line: 7, column: 10, scope: !22) |
| !39 = !DILocation(line: 7, column: 3, scope: !23) |
| !40 = !DILocation(line: 8, column: 20, scope: !21) |
| !41 = !DILocation(line: 0, scope: !21) |
| !42 = distinct !{!42, !39, !43, !44} |
| !43 = !DILocation(line: 9, column: 3, scope: !23) |
| !44 = !{!"llvm.loop.mustprogress"} |
| !45 = !DILocation(line: 10, column: 1, scope: !16) |
