| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu --basic-block-sections=all < %s | FileCheck %s |
| ; |
| ; Verify that AsmPrinter does not optimize debug line directives |
| ; across two distinct sections. Such optimization will lead |
| ; to incorrect debug line number if the memory layout of those |
| ; sections does not strictly mirror the order in the Asm file. |
| ; |
| ; int G; |
| ; void func(int x) { |
| ; if (x) G=0; |
| ; } |
| ; |
| ; Reduced from the above example, the IR has been modified so that |
| ; the store and return instructions have the same DebugLoc; in this |
| ; context, we should see 2 different directives for line #4 |
| ; |
| ; CHECK-COUNT-2: .loc 0 4 1 |
| |
| define void @func(i1 %0) !dbg !8 { |
| br i1 %0, label %3, label %2 |
| |
| 2: ; preds = %1 |
| store i32 0, ptr null, align 4, !dbg !12 |
| br label %3 |
| |
| 3: ; preds = %2, %1 |
| ret void, !dbg !12 |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!6, !7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 16.0.2", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "test.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "fd2935e6157b382ad81da17a61f24bb1") |
| !2 = !{!3} |
| !3 = !DIGlobalVariableExpression(var: !4, expr: !DIExpression()) |
| !4 = distinct !DIGlobalVariable(name: "G", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true) |
| !5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !6 = !{i32 7, !"Dwarf Version", i32 5} |
| !7 = !{i32 2, !"Debug Info Version", i32 3} |
| !8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !9, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null} |
| !11 = !{} |
| !12 = !DILocation(line: 4, column: 1, scope: !8) |
