| ; RUN: llc < %s -filetype=obj | llvm-dwarfdump -v - --debug-info | FileCheck %s |
| ; |
| ; IR module created as follows: |
| ; clang -emit-llvm -S db-abs-1.cpp -o db-abs-1.ll -g |
| ; clang -emit-llvm -S db-abs-2.cpp -o db-abs-2.ll -gmlt |
| ; llvm-link db-abs-1.ll db-abs-2.ll -S -o db-abs-3.ll |
| ; --- db-abs-1.cpp --- |
| ; void f1(); |
| ; inline __attribute__((always_inline)) void f2(int) { |
| ; f1(); |
| ; } |
| ; void f3() { |
| ; f2(0); |
| ; } |
| ; --- db-abs-2.cpp --- |
| ; void f() { |
| ; } |
| ; --- |
| ; The point is that f3() is compiled -g and we get an abstract variable for the |
| ; unnamed parameter to f2(); then f() is compiled -gmlt and it's okay to have |
| ; the abstract variable still there. |
| ; PR31437. |
| ; |
| ; (The 'always_inline' attribute forces f2() to be inlined even at -O0, the |
| ; 'inline' keyword means the non-inlined definition of f2() can be omitted from |
| ; the IR. These are just tactics to simplify the generated test case.) |
| ; |
| ; Verify we see the formal parameter in the first compile-unit, and nothing in |
| ; the second compile-unit. |
| ; |
| ; CHECK: DW_TAG_compile_unit |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "db-abs-1.cpp" |
| ; CHECK-NOT: NULL |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NEXT: DW_AT_linkage_name {{.*}} "_Z2f2i" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_AT_name |
| ; CHECK: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "_Z2f2i" |
| |
| ; CHECK: DW_TAG_compile_unit |
| ; CHECK-NOT: DW_TAG |
| |
| ; ModuleID = 'llvm-link' |
| source_filename = "llvm-link" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: noinline uwtable |
| define void @_Z2f3v() #0 !dbg !8 { |
| entry: |
| %.addr.i = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata ptr %.addr.i, metadata !11, metadata !16), !dbg !17 |
| store i32 0, ptr %.addr.i, align 4 |
| call void @_Z2f1v(), !dbg !19 |
| ret void, !dbg !20 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| declare void @_Z2f1v() #2 |
| |
| ; Function Attrs: noinline nounwind uwtable |
| define void @_Z1fv() #3 !dbg !21 { |
| entry: |
| ret void, !dbg !23 |
| } |
| |
| attributes #0 = { noinline uwtable } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |
| attributes #3 = { noinline nounwind uwtable } |
| |
| !llvm.dbg.cu = !{!0, !3} |
| !llvm.ident = !{!5, !5} |
| !llvm.module.flags = !{!6, !7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 293745)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "db-abs-1.cpp", directory: "/home/probinson/projects/scratch/pr31437") |
| !2 = !{} |
| !3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 5.0.0 (trunk 293745)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2) |
| !4 = !DIFile(filename: "db-abs-2.cpp", directory: "/home/probinson/projects/scratch/pr31437") |
| !5 = !{!"clang version 5.0.0 (trunk 293745)"} |
| !6 = !{i32 2, !"Dwarf Version", i32 4} |
| !7 = !{i32 2, !"Debug Info Version", i32 3} |
| !8 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !1, file: !1, line: 5, type: !9, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null} |
| !11 = !DILocalVariable(arg: 1, scope: !12, file: !1, line: 2, type: !15) |
| !12 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !13, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{null, !15} |
| !15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !16 = !DIExpression() |
| !17 = !DILocation(line: 2, column: 50, scope: !12, inlinedAt: !18) |
| !18 = distinct !DILocation(line: 6, column: 3, scope: !8) |
| !19 = !DILocation(line: 3, column: 3, scope: !12, inlinedAt: !18) |
| !20 = !DILocation(line: 7, column: 1, scope: !8) |
| !21 = distinct !DISubprogram(name: "f", scope: !4, file: !4, line: 1, type: !22, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2) |
| !22 = !DISubroutineType(types: !2) |
| !23 = !DILocation(line: 2, column: 1, scope: !21) |