1 ; RUN: llc -O0 %s -mtriple=aarch64 -o - | FileCheck %s
3 ; Test that a DEBUG_VALUE node is create for variable c after the phi has been
4 ; converted to a ldr. The DEBUG_VALUE must be *after* the ldr and not before it.
6 ; Created from the C code, compiled with -O0 -g and then passed through opt -mem2reg:
17 ; Function Attrs: nounwind
18 define i32 @func(i32) #0 !dbg !8 {
19 call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !12, metadata !13), !dbg !14
20 call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !15, metadata !13), !dbg !16
21 %2 = icmp slt i32 %0, 0, !dbg !17
22 br i1 %2, label %3, label %4, !dbg !19
24 ; <label>:3: ; preds = %1
25 call void @llvm.dbg.value(metadata i32 12, i64 0, metadata !15, metadata !13), !dbg !16
28 ; <label>:4: ; preds = %3, %1
29 %.0 = phi i32 [ 12, %3 ], [ 1, %1 ]
30 ; CHECK: ldr w[[REG:[0-9]+]], [sp, #8]
32 call void @llvm.dbg.value(metadata i32 %.0, i64 0, metadata !15, metadata !13), !dbg !16
33 ; CHECK-NEXT: //DEBUG_VALUE: func:c <- %w[[REG]]
34 %5 = add nsw i32 %.0, %0, !dbg !22
35 call void @llvm.dbg.value(metadata i32 %5, i64 0, metadata !15, metadata !13), !dbg !16
39 ; Function Attrs: nounwind readnone
40 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
42 ; Function Attrs: nounwind readnone
43 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
45 attributes #0 = { nounwind }
46 attributes #1 = { nounwind readnone }
49 !llvm.module.flags = !{!3, !4, !5, !6}
52 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
53 !1 = !DIFile(filename: "a.c", directory: "/tmp")
55 !3 = !{i32 2, !"Dwarf Version", i32 4}
56 !4 = !{i32 2, !"Debug Info Version", i32 3}
57 !5 = !{i32 1, !"wchar_size", i32 4}
58 !6 = !{i32 1, !"min_enum_size", i32 4}
60 !8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
61 !9 = !DISubroutineType(types: !10)
63 !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
64 !12 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)
66 !14 = !DILocation(line: 1, column: 14, scope: !8)
67 !15 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 3, type: !11)
68 !16 = !DILocation(line: 3, column: 13, scope: !8)
69 !17 = !DILocation(line: 4, column: 15, scope: !18)
70 !18 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 13)
71 !19 = !DILocation(line: 4, column: 13, scope: !8)
72 !20 = !DILocation(line: 6, column: 9, scope: !21)
73 !21 = distinct !DILexicalBlock(scope: !18, file: !1, line: 4, column: 21)
74 !22 = !DILocation(line: 7, column: 4, scope: !8)
75 !23 = !DILocation(line: 8, column: 9, scope: !8)