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