1 # RUN: llc %s -o - -run-pass=livedebugvalues -march=x86-64 \
2 # RUN: -experimental-debug-variable-locations=true \
5 ## This test used to crash InstrRefBasedLDV, due to fragment information going
6 ## missing; test for that, and also check what happens when we have assignments
7 ## outside of lexical scope. In the IR below, "_First" is only in scope in the
8 ## entry block, but is assigned in every block. Under current behaviour, that
9 ## means that InstrRefBasedLDV will propagate its location through all blocks.
11 # CHECK: ![[FIRSTVAR:[0-9]+]] = !DILocalVariable(name: "_First",
13 # CHECK-LABEL: bb.0.entry:
14 # CHECK: DBG_VALUE_LIST ![[FIRSTVAR]],
\r
15 # CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), $rbx
\r
17 # CHECK-LABEL: bb.1.if.then.i.i.i.i.i:
18 # CHECK: DBG_VALUE_LIST ![[FIRSTVAR]],
\r
19 # CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), $rbx
\r
20 # CHECK: DBG_INSTR_REF ![[FIRSTVAR]],
\r
21 # CHECK: DBG_VALUE_LIST ![[FIRSTVAR]],
\r
22 # CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), $rbx
\r
24 # CHECK-LABEL: bb.2._Z17do_insert_cv_testI5_TreeEvv.exit:
25 # CHECK: DBG_VALUE_LIST ![[FIRSTVAR]],
\r
26 # CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), $rbx
\r
27 # CHECK: DBG_INSTR_REF ![[FIRSTVAR]],
\r
28 # CHECK: DBG_VALUE_LIST ![[FIRSTVAR]],
\r
29 # CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), $rbx
\r
32 source_filename = "reduced.ll"
33 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
35 %class._Tree = type { i8 }
36 %class._Tree_const_iterator = type { %class._Tree_unchecked_const_iterator }
37 %class._Tree_unchecked_const_iterator = type { %struct._Iterator_base0, i32* }
38 %struct._Iterator_base0 = type { i32 }
40 define i32 @main({ i32, i32* } %call.i) !dbg !6 {
42 call void @llvm.dbg.value(metadata i32 2, metadata !10, metadata !DIExpression()), !dbg !12
43 %call.i1 = call { i32, i32* } undef(%class._Tree* null)
44 %0 = extractvalue { i32, i32* } %call.i, 1
45 call void @llvm.dbg.value(metadata i32* %0, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15
46 %call.i.i.i.i.i = call i8 undef(i32* null), !dbg !15
47 br i1 undef, label %_Z17do_insert_cv_testI5_TreeEvv.exit, label %if.then.i.i.i.i.i
50 %call3.i.i.i.i.i = call i32* undef(i32* null)
51 call void @llvm.dbg.value(metadata i32* %call3.i.i.i.i.i, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15
52 br label %_Z17do_insert_cv_testI5_TreeEvv.exit
54 _Z17do_insert_cv_testI5_TreeEvv.exit:
55 %_First.sroa.2.0.i.i = phi i32* [ %0, %entry ], [ %call3.i.i.i.i.i, %if.then.i.i.i.i.i ]
56 call void @llvm.dbg.value(metadata i32* %_First.sroa.2.0.i.i, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)), !dbg !15
57 call void undef(%class._Tree_const_iterator* null, i32 0, i32* %_First.sroa.2.0.i.i), !dbg !16
61 declare void @llvm.dbg.value(metadata, metadata, metadata)
64 !llvm.module.flags = !{!2, !3, !4, !5}
66 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0 (git@github.com:llvm/llvm-project ffb249520766d4e2ca120c09dae7afa3d64ef81d)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
67 !1 = !DIFile(filename: "toolchain10279.cpp", directory: "/home/jmorse")
68 !2 = !{i32 7, !"Dwarf Version", i32 4}
69 !3 = !{i32 2, !"Debug Info Version", i32 3}
70 !4 = !{i32 1, !"wchar_size", i32 4}
71 !5 = !{i32 7, !"uwtable", i32 1}
72 !6 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 52, type: !7, scopeLine: 52, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
73 !7 = !DISubroutineType(types: !8)
75 !9 = !DIBasicType(name: "int", size: 128, encoding: DW_ATE_signed)
76 !10 = !DILocalVariable(name: "v1", scope: !11, file: !1, line: 47, type: !9)
77 !11 = distinct !DILexicalBlock(scope: !6)
78 !12 = !DILocation(line: 0, scope: !11)
79 !13 = !DILocalVariable(name: "_First", arg: 1, scope: !14, file: !1, line: 11, type: !9)
80 !14 = distinct !DILexicalBlock(scope: !6)
81 !15 = !DILocation(line: 0, scope: !14)
82 !16 = !DILocation(line: 50, column: 11, scope: !11)
88 tracksRegLiveness: true
99 cvBytesOfCalleeSavedRegisters: 16
101 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' }
102 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$r14' }
103 machineFunctionInfo: {}
106 liveins: $rsi, $r14, $rbx
108 frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
109 CFI_INSTRUCTION def_cfa_offset 16
110 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
111 CFI_INSTRUCTION def_cfa_offset 24
112 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
113 CFI_INSTRUCTION def_cfa_offset 32
114 CFI_INSTRUCTION offset $rbx, -24
115 CFI_INSTRUCTION offset $r14, -16
118 DBG_VALUE 2, $noreg, !10, !DIExpression(), debug-location !12
119 renamable $r14d = XOR32rr undef $r14d, undef $r14d, implicit-def dead $eflags, implicit-def $r14
120 dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi
121 CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eax, implicit-def dead $rdx
122 DBG_INSTR_REF !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), dbg-instr-ref(2, 0), debug-location !15
\r
123 dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi, debug-location !15
124 CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def dead $al, debug-location !15
125 TEST8rr renamable $r14b, renamable $r14b, implicit-def $eflags, implicit killed $r14
126 JCC_1 %bb.2, 5, implicit $eflags
128 bb.1.if.then.i.i.i.i.i:
129 dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi
130 CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax, debug-instr-number 3
131 $rbx = MOV64rr killed $rax
132 DBG_INSTR_REF !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), dbg-instr-ref(3, 7), debug-location !15
\r
134 bb.2._Z17do_insert_cv_testI5_TreeEvv.exit:
138 DBG_INSTR_REF !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_fragment, 64, 64), dbg-instr-ref(1, 0), debug-location !15
\r
139 dead $edi = XOR32rr undef $edi, undef $edi, implicit-def dead $eflags, implicit-def $rdi, debug-location !16
140 $esi = XOR32rr undef $esi, undef $esi, implicit-def dead $eflags, debug-location !16
141 $rdx = MOV64rr killed $rbx, debug-location !16
142 CALL64r undef renamable $rax, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit $esi, implicit killed $rdx, implicit-def $rsp, implicit-def $ssp, debug-location !16
143 $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
144 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags
145 CFI_INSTRUCTION def_cfa_offset 24
146 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp
147 CFI_INSTRUCTION def_cfa_offset 16
148 $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp
149 CFI_INSTRUCTION def_cfa_offset 8