1 ; RUN: llc -verify-machineinstrs -filetype=obj -mtriple=aarch64-- \
2 ; RUN: -enable-machine-outliner < %s | llvm-dwarfdump - | FileCheck %s
4 ; Ensure that the MachineOutliner produces valid DWARF when it creates outlined
5 ; functions. Check that the outlined function has a subprogram, and that the
6 ; expected DWARF attributes are present.
8 ; The outlined function appears after bar. Skip past the functions we don't
10 ; CHECK: DW_TAG_compile_unit
11 ; CHECK-DAG: DW_AT_name ("foo")
12 ; CHECK-DAG: DW_AT_name ("p")
14 ; Check the high address of bar. This is one past the end of bar. It should be
15 ; the beginning of the outlined function.
16 ; CHECK: DW_AT_high_pc ([[ONE_PAST_BAR:0x[a-f0-9]+]])
17 ; CHECK-NEXT: DW_AT_frame_base (DW_OP_reg29 W29)
18 ; CHECK-NEXT: DW_AT_name ("bar")
20 ; Check the outlined function's DWARF.
21 ; CHECK-DAG: DW_TAG_subprogram
22 ; CHECK-NEXT: DW_AT_low_pc ([[ONE_PAST_BAR]])
23 ; CHECK-NEXT: DW_AT_high_pc (0x{{[0-9a-f]+}})
24 ; CHECK-NEXT: DW_AT_frame_base (DW_OP_reg29 W29)
25 ; CHECK-NEXT: DW_AT_MIPS_linkage_name ("[[NAME:OUTLINED_FUNCTION_[0-9]+]]")
26 ; CHECK-NEXT: DW_AT_name ("[[NAME]]")
27 ; CHECK-NEXT: DW_AT_artificial (0x01)
28 ; CHECK-NEXT: DW_AT_external (0x01)
30 define void @foo() #0 !dbg !8 {
32 %p = alloca i32*, align 8
33 call void @llvm.dbg.declare(metadata i32** %p, metadata !11, metadata !DIExpression()), !dbg !14
34 %0 = load i32*, i32** %p, align 8, !dbg !15
35 %incdec.ptr = getelementptr inbounds i32, i32* %0, i32 1, !dbg !15
36 store i32* %incdec.ptr, i32** %p, align 8, !dbg !15
37 call void @foo(), !dbg !16
41 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
43 define void @bar() #0 !dbg !18 {
45 %p = alloca i32*, align 8
46 call void @llvm.dbg.declare(metadata i32** %p, metadata !19, metadata !DIExpression()), !dbg !20
47 %0 = load i32*, i32** %p, align 8, !dbg !21
48 %incdec.ptr = getelementptr inbounds i32, i32* %0, i32 1, !dbg !21
49 store i32* %incdec.ptr, i32** %p, align 8, !dbg !21
50 call void @foo(), !dbg !22
54 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
55 attributes #1 = { nounwind readnone speculatable }
58 !llvm.module.flags = !{!3, !4, !5, !6}
61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
62 !1 = !DIFile(filename: "something.c", directory: "somewhere")
64 !3 = !{i32 2, !"Dwarf Version", i32 2}
65 !4 = !{i32 2, !"Debug Info Version", i32 3}
66 !5 = !{i32 1, !"wchar_size", i32 4}
67 !6 = !{i32 7, !"PIC Level", i32 2}
69 !8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
70 !9 = !DISubroutineType(types: !10)
72 !11 = !DILocalVariable(name: "p", scope: !8, file: !1, line: 2, type: !12)
73 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
74 !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
75 !14 = !DILocation(line: 2, column: 8, scope: !8)
76 !15 = !DILocation(line: 3, column: 4, scope: !8)
77 !16 = !DILocation(line: 4, column: 3, scope: !8)
78 !17 = !DILocation(line: 5, column: 1, scope: !8)
79 !18 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 7, type: !9, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
80 !19 = !DILocalVariable(name: "p", scope: !18, file: !1, line: 9, type: !12)
81 !20 = !DILocation(line: 9, column: 8, scope: !18)
82 !21 = !DILocation(line: 10, column: 4, scope: !18)
83 !22 = !DILocation(line: 11, column: 3, scope: !18)
84 !23 = !DILocation(line: 12, column: 1, scope: !18)