1; Test dwarf codegen of DW_OP_minus.
2; RUN: llc -filetype=obj < %s | llvm-dwarfdump -v - | FileCheck %s
3; RUN: llc -dwarf-version=2 -filetype=obj < %s | llvm-dwarfdump -v - \
4; RUN:   | FileCheck %s --check-prefix=DWARF2
5; RUN: llc -dwarf-version=3 -filetype=obj < %s | llvm-dwarfdump -v - \
6; RUN:   | FileCheck %s --check-prefix=DWARF2
7
8; This was derived manually from:
9; int inc(int i) {
10;  return i+1;
11; }
12
13; DWARF2: .debug_info
14; DWARF2: DW_TAG_formal_parameter
15; DWARF2-NEXT: DW_AT_name {{.*}}"i"
16; DWARF2-NOT:      DW_AT_location
17
18; CHECK: .debug_loc contents:
19; CHECK: 0x00000000:
20; CHECK-NEXT:   (0x0000000000000003, 0x0000000000000004): DW_OP_breg0 RAX+0, DW_OP_constu 0xffffffff, DW_OP_and, DW_OP_lit1, DW_OP_minus, DW_OP_stack_value
21;        rax+0, constu 0xffffffff, and, constu 0x00000001, minus, stack-value
22
23source_filename = "minus.c"
24target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
25target triple = "x86_64-apple-macosx10.12.0"
26
27define i32 @inc(i32 %i) local_unnamed_addr #1 !dbg !7 {
28entry:
29  %add = add nsw i32 %i, 1, !dbg !15
30  tail call void @llvm.dbg.value(metadata i32 %add, metadata !12, metadata !13), !dbg !14
31  ret i32 %add, !dbg !16
32}
33
34declare void @llvm.dbg.value(metadata, metadata, metadata) #1
35
36attributes #1 = { nounwind readnone }
37
38!llvm.dbg.cu = !{!0}
39!llvm.module.flags = !{!3, !4, !5}
40!llvm.ident = !{!6}
41
42!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 286322) (llvm/trunk 286305)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
43!1 = !DIFile(filename: "minus.c", directory: "/tmp")
44!2 = !{}
45!3 = !{i32 2, !"Dwarf Version", i32 4}
46!4 = !{i32 2, !"Debug Info Version", i32 3}
47!5 = !{i32 1, !"PIC Level", i32 2}
48!6 = !{!"clang version 4.0.0 (trunk 286322) (llvm/trunk 286305)"}
49!7 = distinct !DISubprogram(name: "inc", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
50!8 = !DISubroutineType(types: !9)
51!9 = !{!10, !10}
52!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
53!11 = !{!12}
54!12 = !DILocalVariable(name: "i", arg: 1, scope: !7, file: !1, line: 1, type: !10)
55!13 = !DIExpression(DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value)
56!14 = !DILocation(line: 1, column: 13, scope: !7)
57!15 = !DILocation(line: 2, column: 11, scope: !7)
58!16 = !DILocation(line: 2, column: 3, scope: !7)
59