1 ; RUN: llc -mtriple=x86_64-linux-gnu -filetype=obj -o - %s -experimental-debug-variable-locations=false | llvm-dwarfdump -name i4 - \
4 ; The test inlines the function F four times, with each inlined variable for
5 ; "i4" sharing the same virtual register. This means the live interval of the
6 ; register spans all of the inlined callsites, extending beyond the lexical
7 ; scope of each. Later during register allocation the live interval is split
8 ; into multiple intervals. Check that this does not generate multiple entries
9 ; within the debug location (see PR33730).
13 ; extern int foobar(int, int, int, int, int);
15 ; int F(int i1, int i2, int i3, int i4, int i5) {
16 ; return foobar(i1, i2, i3, i4, i5);
19 ; int foo(int a, int b, int c, int d, int e) {
20 ; return F(a,b,c,d,e) +
26 ; Ignore the abstract entry.
27 ; CHECK: DW_TAG_formal_parameter
28 ; Check concrete entry has a single location.
29 ; CHECK: DW_TAG_formal_parameter
30 ; CHECK-NEXT: DW_AT_location (DW_OP_reg6 RBP)
31 ; CHECK-NEXT: DW_AT_abstract_origin
32 ; CHECK-NOT: DW_TAG_formal_parameter
34 declare i32 @foobar(i32, i32, i32, i32, i32)
36 define i32 @foo(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) !dbg !25 {
38 tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !15, metadata !17) #3, !dbg !41
39 %call.i = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !43
40 %call.i21 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !50
41 %add = add nsw i32 %call.i21, %call.i, !dbg !51
42 %call.i22 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !58
43 %add3 = add nsw i32 %add, %call.i22, !dbg !59
44 %call.i23 = tail call i32 @foobar(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #3, !dbg !66
45 %add5 = add nsw i32 %add3, %call.i23, !dbg !67
46 ret i32 %add5, !dbg !68
49 declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
52 !llvm.module.flags = !{!3, !4, !5}
55 !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)
56 !1 = !DIFile(filename: "foo.c", directory: "")
58 !3 = !{i32 2, !"Dwarf Version", i32 4}
59 !4 = !{i32 2, !"Debug Info Version", i32 3}
60 !5 = !{i32 1, !"wchar_size", i32 4}
61 !6 = !{!"clang version 6.0.0 (trunk 308976)"}
62 !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)
63 !8 = !DISubroutineType(types: !9)
64 !9 = !{!10, !10, !10, !10, !10, !10}
65 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
67 !15 = !DILocalVariable(name: "i4", arg: 4, scope: !7, file: !1, line: 3, type: !10)
69 !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)
71 !38 = distinct !DILocation(line: 8, column: 10, scope: !25)
72 !41 = !DILocation(line: 3, column: 35, scope: !7, inlinedAt: !38)
73 !43 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !38)
74 !45 = distinct !DILocation(line: 9, column: 10, scope: !25)
75 !50 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !45)
76 !51 = !DILocation(line: 8, column: 23, scope: !25)
77 !53 = distinct !DILocation(line: 10, column: 10, scope: !25)
78 !58 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !53)
79 !59 = !DILocation(line: 9, column: 23, scope: !25)
80 !61 = distinct !DILocation(line: 11, column: 10, scope: !25)
81 !66 = !DILocation(line: 4, column: 10, scope: !7, inlinedAt: !61)
82 !67 = !DILocation(line: 10, column: 23, scope: !25)
83 !68 = !DILocation(line: 8, column: 3, scope: !25)