xref: /llvm-project/llvm/test/DebugInfo/MIR/X86/merge-inline-loc1.mir (revision 12a7aea6b02288000ba6f5c477284b26df8dca01) 
1# RUN: llc -mtriple=x86_64-pc-linux %s -run-pass=branch-folder -o - | FileCheck %s
2
3--- |
4  ; ModuleID = 'case1.c'
5  source_filename = "case1.c"
6  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
7  target triple = "x86_64-unknown-linux-gnu"
8
9  @q1 = dso_local local_unnamed_addr global i32 1, align 4
10  @q2 = dso_local local_unnamed_addr global i32 4, align 4
11  @q3 = dso_local local_unnamed_addr global i32 2, align 4
12  @g1 = dso_local local_unnamed_addr global i32 0, align 4
13  @g2 = dso_local local_unnamed_addr global i32 0, align 4
14  @g3 = dso_local local_unnamed_addr global i32 0, align 4
15
16  ; Function Attrs: nounwind uwtable
17  define dso_local i32 @multiple_inl_one_loc() local_unnamed_addr #0 !dbg !9 {
18  entry:
19    %0 = load i32, ptr @q1, align 4, !dbg !12, !tbaa !13
20    %cmp.i = icmp sgt i32 %0, 3, !dbg !17
21    br i1 %cmp.i, label %if.then.i, label %inl1.exit, !dbg !20
22
23  if.then.i:                                        ; preds = %entry
24    tail call void @abort() #2, !dbg !21
25    unreachable, !dbg !21
26
27  inl1.exit:                                        ; preds = %entry
28    %mul.i = mul nsw i32 %0, 152, !dbg !22
29    %add.i = add nsw i32 %mul.i, 100, !dbg !23
30    store i32 %add.i, ptr @g1, align 4, !dbg !24, !tbaa !13
31    %1 = load i32, ptr @q2, align 4, !dbg !25, !tbaa !13
32    %cmp.i3 = icmp sgt i32 %1, 3, !dbg !26
33    br i1 %cmp.i3, label %if.then.i4, label %inl1.exit7, !dbg !28
34
35  if.then.i4:                                       ; preds = %inl1.exit
36    tail call void @abort() #2, !dbg !29
37    unreachable, !dbg !29
38
39  inl1.exit7:                                       ; preds = %inl1.exit
40    %mul.i5 = mul nsw i32 %1, 152, !dbg !30
41    %add.i6 = add nsw i32 %mul.i5, 200, !dbg !31
42    store i32 %add.i6, ptr @g2, align 4, !dbg !32, !tbaa !13
43    %2 = load i32, ptr @q3, align 4, !dbg !33, !tbaa !13
44    %cmp.i8 = icmp sgt i32 %2, 3, !dbg !34
45    br i1 %cmp.i8, label %if.then.i9, label %inl1.exit12, !dbg !36
46
47  if.then.i9:                                       ; preds = %inl1.exit7
48    tail call void @abort() #2, !dbg !37
49    unreachable, !dbg !37
50
51  inl1.exit12:                                      ; preds = %inl1.exit7
52    %mul.i10 = mul nsw i32 %2, 152, !dbg !38
53    %add.i11 = add nsw i32 %mul.i10, 300, !dbg !39
54    store i32 %add.i11, ptr @q3, align 4, !dbg !40, !tbaa !13
55    ret i32 0, !dbg !41
56  }
57
58  ; Function Attrs: noreturn nounwind
59  declare !dbg !42 void @abort() local_unnamed_addr #1
60
61  attributes #0 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
62  attributes #1 = { noreturn nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
63  attributes #2 = { noreturn nounwind }
64
65  !llvm.dbg.cu = !{!0}
66  !llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
67  !llvm.ident = !{!8}
68
69  !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 16.0.0.prerel", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
70  !1 = !DIFile(filename: "case1.c", directory: "/", checksumkind: CSK_MD5, checksum: "36d7da9616644fc8b011f5c49108ab31")
71  !2 = !{i32 7, !"Dwarf Version", i32 5}
72  !3 = !{i32 2, !"Debug Info Version", i32 3}
73  !4 = !{i32 1, !"wchar_size", i32 4}
74  !5 = !{i32 8, !"PIC Level", i32 2}
75  !6 = !{i32 7, !"PIE Level", i32 2}
76  !7 = !{i32 7, !"uwtable", i32 2}
77  !8 = !{!"clang version 16.0.0.prerel"}
78  !9 = distinct !DISubprogram(name: "multiple_inl_one_loc", scope: !1, file: !1, line: 13, type: !10, scopeLine: 14, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
79  !10 = !DISubroutineType(types: !11)
80  !11 = !{}
81  !12 = !DILocation(line: 15, column: 13, scope: !9)
82  !13 = !{!14, !14, i64 0}
83  !14 = !{!"int", !15, i64 0}
84  !15 = !{!"omnipotent char", !16, i64 0}
85  !16 = !{!"Simple C/C++ TBAA"}
86  !17 = !DILocation(line: 5, column: 9, scope: !18, inlinedAt: !19)
87  !18 = distinct !DISubprogram(name: "inl1", scope: !1, file: !1, line: 3, type: !10, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
88  !19 = distinct !DILocation(line: 15, column: 8, scope: !9)
89  !20 = !DILocation(line: 5, column: 7, scope: !18, inlinedAt: !19)
90  !21 = !DILocation(line: 6, column: 5, scope: !18, inlinedAt: !19)
91  !22 = !DILocation(line: 7, column: 12, scope: !18, inlinedAt: !19)
92  !23 = !DILocation(line: 7, column: 18, scope: !18, inlinedAt: !19)
93  !24 = !DILocation(line: 15, column: 6, scope: !9)
94  !25 = !DILocation(line: 16, column: 13, scope: !9)
95  !26 = !DILocation(line: 5, column: 9, scope: !18, inlinedAt: !27)
96  !27 = distinct !DILocation(line: 16, column: 8, scope: !9)
97  !28 = !DILocation(line: 5, column: 7, scope: !18, inlinedAt: !27)
98  !29 = !DILocation(line: 6, column: 5, scope: !18, inlinedAt: !27)
99  !30 = !DILocation(line: 7, column: 12, scope: !18, inlinedAt: !27)
100  !31 = !DILocation(line: 7, column: 18, scope: !18, inlinedAt: !27)
101  !32 = !DILocation(line: 16, column: 6, scope: !9)
102  !33 = !DILocation(line: 17, column: 13, scope: !9)
103  !34 = !DILocation(line: 5, column: 9, scope: !18, inlinedAt: !35)
104  !35 = distinct !DILocation(line: 17, column: 8, scope: !9)
105  !36 = !DILocation(line: 5, column: 7, scope: !18, inlinedAt: !35)
106  !37 = !DILocation(line: 6, column: 5, scope: !18, inlinedAt: !35)
107  !38 = !DILocation(line: 7, column: 12, scope: !18, inlinedAt: !35)
108  !39 = !DILocation(line: 7, column: 18, scope: !18, inlinedAt: !35)
109  !40 = !DILocation(line: 17, column: 6, scope: !9)
110  !41 = !DILocation(line: 18, column: 3, scope: !9)
111  !42 = !DISubprogram(name: "abort", scope: !43, file: !43, line: 514, type: !10, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !11)
112  !43 = !DIFile(filename: "/usr/include/stdlib.h", directory: "", checksumkind: CSK_MD5, checksum: "f7a1412d75d9e3df251dfc21b02d59ef")
113
114...
115---
116name:            multiple_inl_one_loc
117alignment:       16
118tracksRegLiveness: true
119tracksDebugUserValues: true
120frameInfo:
121  stackSize:       8
122  offsetAdjustment: -8
123  maxAlignment:    1
124  adjustsStack:    true
125  hasCalls:        true
126  maxCallFrameSize: 0
127machineFunctionInfo: {}
128body:             |
129  bb.0.entry:
130    successors: %bb.1(0x00000800), %bb.2(0x7ffff800)
131
132    frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
133    frame-setup CFI_INSTRUCTION def_cfa_offset 16
134    renamable $eax = MOV32rm $rip, 1, $noreg, @q1, $noreg, debug-location !12 :: (dereferenceable load (s32) from @q1, !tbaa !13)
135    CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !17
136    JCC_1 %bb.2, 12, implicit killed $eflags, debug-location !20
137    JMP_1 %bb.1, debug-location !20
138
139  bb.1.if.then.i:
140    successors:
141
142    CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !21
143
144  bb.2.inl1.exit:
145    successors: %bb.3(0x00000800), %bb.4(0x7ffff800)
146    liveins: $eax
147
148    renamable $eax = nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !22
149    renamable $eax = nsw ADD32ri8 killed renamable $eax, 100, implicit-def dead $eflags, debug-location !23
150    MOV32mr $rip, 1, $noreg, @g1, $noreg, killed renamable $eax, debug-location !24 :: (store (s32) into @g1, !tbaa !13)
151    renamable $eax = MOV32rm $rip, 1, $noreg, @q2, $noreg, debug-location !25 :: (dereferenceable load (s32) from @q2, !tbaa !13)
152    CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !26
153    JCC_1 %bb.4, 12, implicit killed $eflags, debug-location !28
154    JMP_1 %bb.3, debug-location !28
155
156  bb.3.if.then.i4:
157    successors:
158
159    CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !29
160
161  bb.4.inl1.exit7:
162    successors: %bb.5(0x00000800), %bb.6(0x7ffff800)
163    liveins: $eax
164
165    renamable $eax = nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !30
166    renamable $eax = nsw ADD32ri killed renamable $eax, 200, implicit-def dead $eflags, debug-location !31
167    MOV32mr $rip, 1, $noreg, @g2, $noreg, killed renamable $eax, debug-location !32 :: (store (s32) into @g2, !tbaa !13)
168    renamable $eax = MOV32rm $rip, 1, $noreg, @q3, $noreg, debug-location !33 :: (dereferenceable load (s32) from @q3, !tbaa !13)
169    CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !34
170    JCC_1 %bb.6, 12, implicit killed $eflags, debug-location !36
171    JMP_1 %bb.5, debug-location !36
172
173  bb.5.if.then.i9:
174    successors:
175
176    CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !37
177
178  bb.6.inl1.exit12:
179    liveins: $eax
180
181    renamable $eax = nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !38
182    renamable $eax = nsw ADD32ri killed renamable $eax, 300, implicit-def dead $eflags, debug-location !39
183    MOV32mr $rip, 1, $noreg, @q3, $noreg, killed renamable $eax, debug-location !40 :: (store (s32) into @q3, !tbaa !13)
184    $eax = MOV32r0 implicit-def dead $eflags, debug-location !41
185    $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !41
186    frame-destroy CFI_INSTRUCTION def_cfa_offset 8, debug-location !41
187    RET 0, $eax, debug-location !41
188
189...
190
191# In this case we have a abort call block folded from one single location in
192# three inlined instances of inl1():
193#
194#  1 | #include <stdlib.h>
195#  2 |
196#  3 | static inline int inl1(int q, int n)
197#  4 | {
198#  5 |   if (q > 3)
199#  6 |     abort();
200#  7 |   return q * 152 + n;
201#  8 | }
202#  9 |
203# 10 | int q1 = 1, q2 = 4, q3 = 2;
204# 11 | int g1, g2, g3;
205# 12 |
206# 13 | int multiple_inl_one_loc()
207# 14 | {
208# 15 |   g1 = inl1(q1, 100);
209# 16 |   g2 = inl1(q2, 200);
210# 17 |   q3 = inl1(q3, 300);
211# 18 |   return 0;
212# 19 | }
213#
214# We should produce a merged location describing that the abort call is located
215# at line 6 in inl1() inlined at line 0.
216
217# CHECK-DAG: [[INLINER:![0-9]+]] = distinct !DISubprogram(name: "multiple_inl_one_loc"
218# CHECK-DAG: [[INLINEE:![0-9]+]] = distinct !DISubprogram(name: "inl1"
219
220# CHECK-NOT: CALL64pcrel32
221# CHECK: CALL64pcrel32 target-flags(x86-plt) @abort, {{.*}} debug-location !DILocation(line: 6, column: 5, scope: [[INLINEE]], inlinedAt: !DILocation(line: 0, scope: [[INLINER]]))
222# CHECK-NOT: CALL64pcrel32
223