| ; RUN: llc -mtriple=mips64-unknown-freebsd -target-abi n64 -relocation-model pic -verify-machineinstrs -o /dev/null %s -O2 |
| |
| ; Test that the presence of debug information does not cause the branch folder |
| ; to rewrite branches to have negative basic block ids, which would cause the |
| ; long branch pass to crash. |
| |
| @c = external global i32, align 4 |
| |
| define void @e() !dbg !19 { |
| entry: |
| %0 = load i32, ptr @c, align 4, !dbg !28, !tbaa !31 |
| %tobool8 = icmp eq i32 %0, 0, !dbg !35 |
| br i1 %tobool8, label %for.end, label %for.body.preheader, !dbg !35 |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body, !dbg !36 |
| |
| for.body: ; preds = %for.body.preheader |
| %1 = load i8, ptr undef, align 1, !dbg !36, !tbaa !38 |
| %conv = zext i8 %1 to i32, !dbg !36 |
| %cmp = icmp sgt i32 %0, %conv, !dbg !39 |
| br i1 %cmp, label %if.end, label %if.then, !dbg !40 |
| |
| if.then: ; preds = %for.body |
| tail call void @llvm.dbg.value(metadata i32 %conv, metadata !41, metadata !DIExpression()), !dbg !43 |
| %idxprom5 = zext i8 %1 to i64, !dbg !44 |
| %call = tail call i32 @g(i32 signext undef) #3, !dbg !45 |
| br label %if.end, !dbg !46 |
| |
| if.end: ; preds = %if.then, %for.body |
| unreachable |
| |
| for.end: ; preds = %entry |
| ret void |
| } |
| |
| declare i32 @g(...) |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!17, !18} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3) |
| !1 = !DIFile(filename: "/local/scratch/alr48/cheri/llvm/tools/clang/test/CodeGen/<stdin>", directory: "/local/scratch/alr48/cheri/llvm/cmake-build-debug/tools/clang/test/CodeGen") |
| !2 = !{} |
| !3 = !{!4, !9, !13, !15} |
| !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression()) |
| !5 = distinct !DIGlobalVariable(name: "a", scope: !0, file: !6, line: 6, type: !7, isLocal: false, isDefinition: true) |
| !6 = !DIFile(filename: "/crash.c", directory: "/tmp") |
| !7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64) |
| !8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char) |
| !9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression()) |
| !10 = distinct !DIGlobalVariable(name: "b", scope: !0, file: !6, line: 7, type: !11, isLocal: false, isDefinition: true) |
| !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) |
| !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !DIGlobalVariableExpression(var: !14, expr: !DIExpression()) |
| !14 = distinct !DIGlobalVariable(name: "c", scope: !0, file: !6, line: 8, type: !12, isLocal: false, isDefinition: true) |
| !15 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression()) |
| !16 = distinct !DIGlobalVariable(name: "d", scope: !0, file: !6, line: 8, type: !12, isLocal: false, isDefinition: true) |
| !17 = !{i32 2, !"Debug Info Version", i32 3} |
| !18 = !{i32 7, !"PIC Level", i32 2} |
| !19 = distinct !DISubprogram(name: "e", scope: !6, file: !6, line: 9, type: !20, isLocal: false, isDefinition: true, scopeLine: 9, isOptimized: true, unit: !0, retainedNodes: !22) |
| !20 = !DISubroutineType(types: !21) |
| !21 = !{!12} |
| !22 = !{!23} |
| !23 = !DILocalVariable(name: "f", scope: !24, file: !6, line: 12, type: !12) |
| !24 = distinct !DILexicalBlock(scope: !25, file: !6, line: 11, column: 20) |
| !25 = distinct !DILexicalBlock(scope: !26, file: !6, line: 11, column: 9) |
| !26 = distinct !DILexicalBlock(scope: !27, file: !6, line: 10, column: 3) |
| !27 = distinct !DILexicalBlock(scope: !19, file: !6, line: 10, column: 3) |
| !28 = !DILocation(line: 10, column: 10, scope: !29) |
| !29 = distinct !DILexicalBlock(scope: !30, file: !6, line: 10, column: 3) |
| !30 = distinct !DILexicalBlock(scope: !19, file: !6, line: 10, column: 3) |
| !31 = !{!32, !32, i64 0} |
| !32 = !{!"int", !33, i64 0} |
| !33 = !{!"omnipotent char", !34, i64 0} |
| !34 = !{!"Simple C/C++ TBAA"} |
| !35 = !DILocation(line: 10, column: 3, scope: !30) |
| !36 = !DILocation(line: 11, column: 9, scope: !37) |
| !37 = distinct !DILexicalBlock(scope: !29, file: !6, line: 11, column: 9) |
| !38 = !{!33, !33, i64 0} |
| !39 = !DILocation(line: 11, column: 14, scope: !37) |
| !40 = !DILocation(line: 11, column: 9, scope: !29) |
| !41 = !DILocalVariable(name: "f", scope: !42, file: !6, line: 12, type: !12) |
| !42 = distinct !DILexicalBlock(scope: !37, file: !6, line: 11, column: 20) |
| !43 = !DILocation(line: 12, column: 11, scope: !42) |
| !44 = !DILocation(line: 13, column: 9, scope: !42) |
| !45 = !DILocation(line: 13, column: 7, scope: !42) |
| !46 = !DILocation(line: 14, column: 5, scope: !42) |