| --- | |
| ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE |
| |
| ; Check that DBG_VALUE instructions are not propagated into a loop that |
| ; explicitly terminates its location. |
| |
| ; CHECK: ![[VARNO:[0-9]+]] = !DILocalVariable(name: "myVar" |
| ; CHECK-LABEL: bb.0.entry: |
| ; CHECK: DBG_VALUE $ebx, $noreg, ![[VARNO]], !DIExpression(), |
| ; CHECK-LABEL: bb.2.bb2: |
| ; CHECK: DBG_VALUE $noreg, $noreg, ![[VARNO]], !DIExpression(), |
| |
| define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 { |
| entry: |
| br label %bb1, !dbg !17 |
| bb1: |
| br label %bb2, !dbg !17 |
| bb2: |
| br label %bb3, !dbg !17 |
| bb3: |
| ret i32 0, !dbg !17 |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!7, !8, !9, !10} |
| !llvm.ident = !{!11} |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None) |
| !1 = !DIFile(filename: "main.cpp", directory: "F:\test") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression()) |
| !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true) |
| !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !7 = !{i32 2, !"Dwarf Version", i32 4} |
| !8 = !{i32 2, !"Debug Info Version", i32 3} |
| !9 = !{i32 1, !"wchar_size", i32 2} |
| !10 = !{i32 7, !"PIC Level", i32 2} |
| !11 = !{!"clang version 10.0.0"} |
| !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15) |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{!6, !6} |
| !15 = !{!16} |
| !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6) |
| !17 = !DILocation(line: 10, scope: !12) |
| |
| ... |
| --- |
| name: _Z8bb_to_bb |
| body: | |
| bb.0.entry: |
| successors: %bb.1 |
| $ebx = MOV32ri 0, debug-location !17 |
| DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17 |
| |
| bb.1.bb1: |
| successors: %bb.2 |
| $eax = MOV32ri 0, debug-location !17 |
| |
| bb.2.bb2: |
| successors: %bb.1, %bb.3 |
| $ecx = MOV32ri 1, debug-location !17 |
| DBG_VALUE $noreg, $noreg, !16, !DIExpression(), debug-location !17 |
| JCC_1 %bb.1, 4, implicit killed $eflags |
| |
| bb.3.bb3: |
| RET64 $eax, debug-location !17 |
| ... |