1# RUN: llc -start-after=livedebugvalues --filetype=obj %s -o - \
2# RUN:     | llvm-dwarfdump -v -name=parama - | FileCheck %s
3#
4# Generated with -O2, llc -stop-after=livedebugvalues, with IR modified from
5# this source:
6#
7# int globa, globb;
8# void ext();
9# static void set(int parama, int paramb) {
10#   globa = parama;
11#   globb = paramb;
12# }
13# void funone(int one, int two) {
14#   two = two + one;
15#   // 'two = ...' sunk between the inlined assignments to globa and globa.
16#   set(one, two);
17#   if (two > 0)
18#     return ext();
19# }
20# void funtwo(int one, int two) {
21#   two = one + two;
22#   // 'two = ...' sunk between the inlined assignments to globa and globa,
23#   // and rdi is clobbered by the sunk 'two = ...'.
24#   set(one, two);
25#   if (one < two)
26#     return ext();
27# }
28#
29# Check that the 'parama' is available for the entire inlined scope in funone,
30# and that it is unavailable in the second DW_AT_ranges segment of the inlined
31# scope in funtwo. In both cases the inlined scope 'set' is intrerrupted by an
32# instruction from the calling function.
33#
34# Except for 'parama', all DILocalVariable metadata has been removed.
35#
36# Ignore first entry (abstract), we want to look at the concrete instances.
37# CHECK:       DW_TAG_formal_parameter [
38# CHECK:       DW_TAG_formal_parameter [
39# CHECK-NEXT:    DW_AT_location [DW_FORM_exprloc] (DW_OP_reg5 RDI)
40# CHECK-NEXT:    DW_AT_abstract_origin {{.*}} "parama"
41# CHECK:       DW_TAG_formal_parameter [
42# CHECK-NEXT:    DW_AT_location [DW_FORM_sec_offset]
43# CHECK-NEXT:      [0x{{[0-9a-b]+}}, 0x{{[0-9a-b]+}})
44# CHECK-NEXT:    DW_AT_abstract_origin {{.*}} "parama"
45
46--- |
47  target triple = "x86_64-unknown-linux-gnu"
48
49  @globa = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
50  @globb = dso_local local_unnamed_addr global i32 0, align 4, !dbg !10
51
52  declare !dbg !6 dso_local void @ext(...) local_unnamed_addr
53  declare void @llvm.dbg.value(metadata, metadata, metadata)
54
55  define dso_local void @funone(i32 %one, i32 %two) local_unnamed_addr !dbg !17 {
56  entry:
57    call void @llvm.dbg.value(metadata i32 %one, metadata !20, metadata !DIExpression()), !dbg !23
58    store i32 %one, i32* @globa, align 4, !dbg !25
59    %add = add nsw i32 %two, %one, !dbg !30
60    store i32 %add, i32* @globb, align 4, !dbg !31
61    %cmp = icmp sgt i32 %add, 0, !dbg !32
62    br i1 %cmp, label %if.then, label %if.end, !dbg !34
63
64  if.then:                                          ; preds = %entry
65    tail call void (...) @ext(), !dbg !35
66    ret void, !dbg !36
67
68  if.end:                                           ; preds = %entry
69    ret void, !dbg !36
70  }
71
72  define dso_local void @funtwo(i32 %one, i32 %two) local_unnamed_addr !dbg !37 {
73  entry:
74    call void @llvm.dbg.value(metadata i32 %one, metadata !20, metadata !DIExpression()), !dbg !41
75    store i32 %one, i32* @globa, align 4, !dbg !43
76    %add = add nsw i32 %two, %one, !dbg !44
77    store i32 %add, i32* @globb, align 4, !dbg !45
78    %cmp = icmp sgt i32 %two, 0, !dbg !46
79    br i1 %cmp, label %if.then, label %if.end, !dbg !48
80
81  if.then:                                          ; preds = %entry
82    tail call void (...) @ext(), !dbg !49
83    ret void, !dbg !50
84
85  if.end:                                           ; preds = %entry
86    ret void, !dbg !50
87  }
88
89  !llvm.dbg.cu = !{!2}
90  !llvm.module.flags = !{!13, !14, !15}
91  !llvm.ident = !{!16}
92
93  !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
94  !1 = distinct !DIGlobalVariable(name: "globa", scope: !2, file: !3, line: 16, type: !12, isLocal: false, isDefinition: true)
95  !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !9, splitDebugInlining: false, nameTableKind: None)
96  !3 = !DIFile(filename: "test.c", directory: "/")
97  !4 = !{}
98  !5 = !{!6}
99  !6 = !DISubprogram(name: "ext", scope: !3, file: !3, line: 17, type: !7, spFlags: DISPFlagOptimized, retainedNodes: !4)
100  !7 = !DISubroutineType(types: !8)
101  !8 = !{null, null}
102  !9 = !{!0, !10}
103  !10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
104  !11 = distinct !DIGlobalVariable(name: "globb", scope: !2, file: !3, line: 16, type: !12, isLocal: false, isDefinition: true)
105  !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
106  !13 = !{i32 7, !"Dwarf Version", i32 4}
107  !14 = !{i32 2, !"Debug Info Version", i32 3}
108  !15 = !{i32 1, !"wchar_size", i32 4}
109  !16 = !{!"clang version 11.0.0"}
110  !17 = distinct !DISubprogram(name: "funone", scope: !3, file: !3, line: 22, type: !18, scopeLine: 22, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
111  !18 = !DISubroutineType(types: !19)
112  !19 = !{null, !12, !12}
113  !20 = !DILocalVariable(name: "parama", arg: 1, scope: !21, file: !3, line: 18, type: !12)
114  !21 = distinct !DISubprogram(name: "set", scope: !3, file: !3, line: 18, type: !18, scopeLine: 18, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !22)
115  !22 = !{!20}
116  !23 = !DILocation(line: 0, scope: !21, inlinedAt: !24)
117  !24 = distinct !DILocation(line: 24, column: 3, scope: !17)
118  !25 = !DILocation(line: 19, column: 9, scope: !21, inlinedAt: !24)
119  !30 = !DILocation(line: 23, column: 13, scope: !17)
120  !31 = !DILocation(line: 20, column: 9, scope: !21, inlinedAt: !24)
121  !32 = !DILocation(line: 25, column: 11, scope: !33)
122  !33 = distinct !DILexicalBlock(scope: !17, file: !3, line: 25, column: 7)
123  !34 = !DILocation(line: 25, column: 7, scope: !17)
124  !35 = !DILocation(line: 26, column: 12, scope: !33)
125  !36 = !DILocation(line: 27, column: 1, scope: !17)
126  !37 = distinct !DISubprogram(name: "funtwo", scope: !3, file: !3, line: 28, type: !18, scopeLine: 28, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !38)
127  !38 = !{}
128  !41 = !DILocation(line: 0, scope: !21, inlinedAt: !42)
129  !42 = distinct !DILocation(line: 30, column: 3, scope: !37)
130  !43 = !DILocation(line: 19, column: 9, scope: !21, inlinedAt: !42)
131  !44 = !DILocation(line: 29, column: 13, scope: !37)
132  !45 = !DILocation(line: 20, column: 9, scope: !21, inlinedAt: !42)
133  !46 = !DILocation(line: 31, column: 11, scope: !47)
134  !47 = distinct !DILexicalBlock(scope: !37, file: !3, line: 31, column: 7)
135  !48 = !DILocation(line: 31, column: 7, scope: !37)
136  !49 = !DILocation(line: 32, column: 12, scope: !47)
137  !50 = !DILocation(line: 33, column: 1, scope: !37)
138
139...
140---
141name:            funone
142body:             |
143  bb.0.entry:
144    successors: %bb.2(0x50000000), %bb.1(0x30000000)
145    liveins: $edi, $esi
146
147    DBG_VALUE $edi, $noreg, !20, !DIExpression(), debug-location !23
148    MOV32mr $rip, 1, $noreg, @globa, $noreg, renamable $edi, debug-location !25 :: (store 4 into @globa)
149    renamable $esi = ADD32rr killed renamable $esi, killed renamable $edi, implicit-def $eflags, debug-location !32
150    MOV32mr $rip, 1, $noreg, @globb, $noreg, killed renamable $esi, debug-location !31 :: (store 4 into @globb)
151    JCC_1 %bb.1, 14, implicit $eflags, debug-location !34
152
153  bb.2.if.then:
154    dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !35
155    TAILJMPd64 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit killed $al, debug-location !35
156
157  bb.1.if.end:
158    RETQ debug-location !36
159
160...
161---
162name:            funtwo
163body:             |
164  bb.0.entry:
165    successors: %bb.2(0x50000000), %bb.1(0x30000000)
166    liveins: $edi, $esi
167
168    DBG_VALUE $edi, $noreg, !20, !DIExpression(), debug-location !41
169    MOV32mr $rip, 1, $noreg, @globa, $noreg, renamable $edi, debug-location !43 :: (store 4 into @globa)
170    renamable $edi = nsw ADD32rr killed renamable $edi, renamable $esi, implicit-def dead $eflags, debug-location !44
171    MOV32mr $rip, 1, $noreg, @globb, $noreg, killed renamable $edi, debug-location !45 :: (store 4 into @globb)
172    TEST32rr killed renamable $esi, renamable $esi, implicit-def $eflags, debug-location !46
173    JCC_1 %bb.1, 14, implicit $eflags, debug-location !48
174
175  bb.2.if.then:
176    dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !49
177    TAILJMPd64 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit killed $al, debug-location !49
178
179  bb.1.if.end:
180    RETQ debug-location !50
181
182...
183