1 ; RUN: llc -mtriple=x86_64-linux-gnu -filetype=obj -o - %s | llvm-dwarfdump -debug-loc - | FileCheck %s
3 ; The test inlines the function F four times, with each inlined variable for
4 ; "i4" sharing the same virtual register. This means the live interval of the
5 ; register spans all of the inlined callsites, extending beyond the lexical
6 ; scope of each. Later during register allocation the live interval is split
7 ; into multiple intervals. Check that this does not generate multiple entries
8 ; within the debug location (see PR33730).
12 ; extern int foobar(int, int, int, int, int);
14 ; int F(int i1, int i2, int i3, int i4, int i5) {
15 ; return foobar(i1, i2, i3, i4, i5);
18 ; int foo(int a, int b, int c, int d, int e) {
19 ; return F(a,b,c,d,e) +
25 ; CHECK: .debug_loc contents:
26 ; CHECK-NEXT: 0x00000000:
27 ; We currently emit an entry for the function prologue, too, which could be optimized away.
28 ; CHECK: [0x0000000000000010, 0x0000000000000072): DW_OP_reg3 RBX
29 ; We should only have one entry inside the function.
32 declare i32 @foobar(i32, i32, i32, i32, i32)
34 define i32 @foo(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) !dbg !25 {
36 tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !15, metadata !17) #3, !dbg !41
37 %call.i = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !43
38 %call.i21 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !50
39 %add = add nsw i32 %call.i21, %call.i, !dbg !51
40 %call.i22 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !58
41 %add3 = add nsw i32 %add, %call.i22, !dbg !59
42 %call.i23 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !66
43 %add5 = add nsw i32 %add3, %call.i23, !dbg !67
44 ret i32 %add5, !dbg !68
47 declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
50 !llvm.module.flags = !{!3, !4, !5}
53 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 (trunk 308976)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
54 !1 = !DIFile(filename: "foo.c", directory: "")
56 !3 = !{i32 2, !"Dwarf Version", i32 4}
57 !4 = !{i32 2, !"Debug Info Version", i32 3}
58 !5 = !{i32 1, !"wchar_size", i32 4}
59 !6 = !{!"clang version 6.0.0 (trunk 308976)"}
60 !7 = distinct !DISubprogram(name: "F", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
61 !8 = !DISubroutineType(types: !9)
62 !9 = !{!10, !10, !10, !10, !10, !10}
63 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
65 !15 = !DILocalVariable(name: "i4", arg: 4, scope: !7, file: !1, line: 3, type: !10)
67 !25 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 7, type: !8, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !26)
69 !38 = distinct !DILocation(line: 8, column: 10, scope: !25)
70 !41 = !DILocation(line: 3, column: 35, scope: !7, inlinedAt: !38)
71 !43 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !38)
72 !45 = distinct !DILocation(line: 9, column: 10, scope: !25)
73 !50 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !45)
74 !51 = !DILocation(line: 8, column: 23, scope: !25)
75 !53 = distinct !DILocation(line: 10, column: 10, scope: !25)
76 !58 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !53)
77 !59 = !DILocation(line: 9, column: 23, scope: !25)
78 !61 = distinct !DILocation(line: 11, column: 10, scope: !25)
79 !66 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !61)
80 !67 = !DILocation(line: 10, column: 23, scope: !25)
81 !68 = !DILocation(line: 8, column: 3, scope: !25)