1 ; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
2 ; RUN: -experimental-debug-variable-locations=false \
3 ; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE
4 ; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
5 ; RUN: -experimental-debug-variable-locations=true \
6 ; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF
8 ; Test that dbg.values of an SSA variable that's not used in a basic block,
9 ; is converted to a DBG_VALUE in that same basic block. We know that %1 is
10 ; live from the entry bb to the exit bb, is allocated a vreg because it's
11 ; used across basic blocks. We should be able to produce a DBG_VALUE that
12 ; refers to it in the nextbb block.
14 source_filename = "debug.c"
15 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
16 target triple = "x86_64-unknown-linux-gnu"
18 ; Function Attrs: nounwind uwtable
19 define dso_local i32 @main(i32 %arg0, i32 %arg1) local_unnamed_addr !dbg !11 {
21 ; CHECK-LABEL: bb.0.entry:
22 ; INSTRREF: ADD32ri {{.*}} debug-instr-number 1
23 %0 = add i32 %arg0, 42, !dbg !26
24 %1 = add i32 %arg1, 101, !dbg !26
25 %cmp = icmp eq i32 %1, 0
26 br i1 %cmp, label %nextbb, label %exit, !dbg !26
29 ; CHECK-LABEL: bb.{{.*}}.nextbb
30 %2 = mul i32 %0, %arg1, !dbg !26
32 call void @llvm.dbg.value(metadata i32 %1, metadata !16, metadata !DIExpression()), !dbg !27
33 ; INSTRREF-NEXT: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)
\r
34 ; DBGVALUE-NEXT: DBG_VALUE
35 br label %exit, !dbg !26
37 ; CHECK-LABEL: bb.{{.*}}.exit
39 %3 = phi i32 [ 12, %entry ], [ %2, %nextbb ], !dbg !26
40 %4 = add i32 %1, %3, !dbg !26
44 declare void @llvm.dbg.value(metadata, metadata, metadata)
47 !llvm.module.flags = !{!7, !8, !9}
50 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4)
51 !3 = !DIFile(filename: "debug.c", directory: "")
53 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
54 !7 = !{i32 2, !"Dwarf Version", i32 4}
55 !8 = !{i32 2, !"Debug Info Version", i32 3}
56 !9 = !{i32 1, !"wchar_size", i32 4}
57 !10 = !{!"clang version 7.0.0 (x)"}
58 !11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !14)
59 !12 = !DISubroutineType(types: !13)
62 !16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6)
63 !26 = !DILocation(line: 4, column: 7, scope: !11)
64 !27 = !DILocation(line: 5, column: 7, scope: !11)
65 !31 = !{!32, !32, i64 0}
66 !32 = !{!"int", !33, i64 0}
67 !33 = !{!"omnipotent char", !34, i64 0}
68 !34 = !{!"Simple C/C++ TBAA"}