1 # RUN: llc -start-after=livedebugvalues -filetype=obj -o - %s \
2 # RUN: | llvm-dwarfdump - | FileCheck %s
3 # CHECK: .debug_info contents:
4 # CHECK: DW_TAG_formal_parameter
5 # CHECK: DW_TAG_formal_parameter
6 # CHECK-NEXT: DW_AT_location
7 # CHECK-NEXT: [0x0000000000000010, 0x0000000000000014): DW_OP_reg1 W1
8 # CHECK-NEXT: [0x0000000000000014, 0x0000000000000038): DW_OP_breg31 WSP+8
9 # CHECK-NEXT: DW_AT_name {{.*}}"y"
12 ; Generated at -Os from:
16 ; void g(struct Rect);
18 ; int f(int x, int y, struct Rect s) {
24 source_filename = "/tmp/clobber.c"
25 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
26 target triple = "arm64-apple-ios"
28 %struct.Rect = type { double, double, double, double }
30 ; Function Attrs: nounwind optsize ssp
31 define i32 @f(i32 %x, i32 %y, [4 x double] %s.coerce) local_unnamed_addr #0 !dbg !7 {
33 %x.addr = alloca i32, align 4
34 tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !19, metadata !22), !dbg !23
35 store i32 %x, i32* %x.addr, align 4, !tbaa !24
36 tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !20, metadata !22), !dbg !28
37 tail call void @llvm.dbg.declare(metadata %struct.Rect* undef, metadata !21, metadata !22), !dbg !29
38 tail call void @g([4 x double] %s.coerce) #4, !dbg !30
39 %tobool = icmp eq i32 %y, 0, !dbg !31
40 br i1 %tobool, label %if.end, label %if.then, !dbg !33
42 if.then: ; preds = %entry
43 tail call void @llvm.dbg.value(metadata i32* %x.addr, i64 0, metadata !19, metadata !22), !dbg !23
44 call void @h(i32* nonnull %x.addr) #4, !dbg !34
45 br label %if.end, !dbg !34
47 if.end: ; preds = %if.then, %entry
51 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
52 declare void @g([4 x double]) local_unnamed_addr #2
53 declare void @h(i32*) local_unnamed_addr #2
54 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
55 declare void @llvm.stackprotector(i8*, i8**) #3
57 attributes #0 = { nounwind optsize ssp }
58 attributes #1 = { nounwind readnone speculatable }
59 attributes #2 = { optsize }
60 attributes #3 = { nounwind }
61 attributes #4 = { nounwind optsize }
64 !llvm.module.flags = !{!3, !4, !5}
67 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 302682) (llvm/trunk 302683)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
68 !1 = !DIFile(filename: "/tmp/clobber.c", directory: "/Volumes/Data/apple-internal/swift")
70 !3 = !{i32 2, !"Dwarf Version", i32 2}
71 !4 = !{i32 2, !"Debug Info Version", i32 3}
72 !5 = !{i32 1, !"PIC Level", i32 2}
73 !6 = !{!"clang version 5.0.0 (trunk 302682) (llvm/trunk 302683)"}
74 !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 7, type: !8, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !18)
75 !8 = !DISubroutineType(types: !9)
76 !9 = !{!10, !10, !10, !11}
77 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
78 !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Rect", file: !1, line: 1, size: 256, elements: !12)
79 !12 = !{!13, !15, !16, !17}
80 !13 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !11, file: !1, line: 2, baseType: !14, size: 64)
81 !14 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)
82 !15 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 64)
83 !16 = !DIDerivedType(tag: DW_TAG_member, name: "w", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 128)
84 !17 = !DIDerivedType(tag: DW_TAG_member, name: "h", scope: !11, file: !1, line: 2, baseType: !14, size: 64, offset: 192)
85 !18 = !{!19, !20, !21}
86 !19 = !DILocalVariable(name: "x", arg: 1, scope: !7, file: !1, line: 7, type: !10)
87 !20 = !DILocalVariable(name: "y", arg: 2, scope: !7, file: !1, line: 7, type: !10)
88 !21 = !DILocalVariable(name: "s", arg: 3, scope: !7, file: !1, line: 7, type: !11)
90 !23 = !DILocation(line: 7, column: 11, scope: !7)
91 !24 = !{!25, !25, i64 0}
92 !25 = !{!"int", !26, i64 0}
93 !26 = !{!"omnipotent char", !27, i64 0}
94 !27 = !{!"Simple C/C++ TBAA"}
95 !28 = !DILocation(line: 7, column: 18, scope: !7)
96 !29 = !DILocation(line: 7, column: 33, scope: !7)
97 !30 = !DILocation(line: 8, column: 3, scope: !7)
98 !31 = !DILocation(line: 9, column: 7, scope: !32)
99 !32 = distinct !DILexicalBlock(scope: !7, file: !1, line: 9, column: 7)
100 !33 = !DILocation(line: 9, column: 7, scope: !7)
101 !34 = !DILocation(line: 10, column: 5, scope: !32)
102 !35 = !DILocation(line: 12, column: 3, scope: !7)
103 !36 = !DIExpression(DW_OP_constu, 8, DW_OP_plus)
109 exposesReturnsTwice: false
111 regBankSelected: false
113 tracksRegLiveness: true
122 isFrameAddressTaken: false
123 isReturnAddressTaken: false
132 hasOpaqueSPAdjustment: false
134 hasMustTailInVarArgFunc: false
136 - { id: 0, name: x.addr, offset: -20, size: 4, alignment: 4, local-offset: -4 }
137 - { id: 1, type: spill-slot, offset: -24, size: 4, alignment: 4 }
138 - { id: 2, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' }
139 - { id: 3, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' }
142 successors: %bb.2.if.end(0x40000000), %bb.1.if.then(0x40000000)
143 liveins: $w0, $w1, $d0, $d1, $d2, $d3, $lr
145 $sp = frame-setup SUBXri $sp, 32, 0
146 frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store 8 into %stack.3), (store 8 into %stack.2)
147 $fp = frame-setup ADDXri $sp, 16, 0
148 DBG_VALUE $w0, _, !19, !22, debug-location !23
149 STURWi killed $w0, $fp, -4 :: (store 4 into %stack.0.x.addr)
150 DBG_VALUE $w1, _, !20, !22, debug-location !28
151 STRWui killed $w1, $sp, 2, debug-location !30 :: (store 4 into %stack.1)
152 DBG_VALUE $sp, 0, !20, !36, debug-location !28
153 BL @g, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $d0, implicit killed $d1, implicit killed $d2, implicit killed $d3, implicit-def $sp, debug-location !30
154 $w0 = LDRWui $sp, 2, debug-location !33 :: (load 4 from %stack.1)
155 CBZW killed $w0, %bb.2.if.end, debug-location !33
158 successors: %bb.2.if.end(0x80000000)
160 DBG_VALUE $sp, 0, !20, !36, debug-location !28
161 $x0 = SUBXri $fp, 4, 0
162 DBG_VALUE $x0, _, !19, !22, debug-location !23
163 BL @h, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, debug-location !34
166 DBG_VALUE $sp, 0, !20, !36, debug-location !28
168 $x0 = ORRXrs $xzr, undef $x8, 0, implicit killed $w8, debug-location !35
169 $fp, $lr = LDPXi $sp, 2, debug-location !35 :: (load 8 from %stack.3), (load 8 from %stack.2)
170 $sp = ADDXri $sp, 32, 0, debug-location !35
171 RET undef $lr, implicit killed $w0, debug-location !35