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140 lines
6.1 KiB
140 lines
6.1 KiB
4 months ago
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; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump -v -debug-info - | FileCheck -implicit-check-not=DW_TAG %s
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; RUN: %llc_dwarf -accel-tables=Apple -dwarf-linkage-names=All -O0 -filetype=obj < %s | llvm-dwarfdump -v - | FileCheck --check-prefix=CHECK-ACCEL --check-prefix=CHECK %s
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; Build from source:
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; $ clang++ a.cpp b.cpp -g -c -emit-llvm
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; $ llvm-link a.bc b.bc -o ab.bc
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; $ opt -inline ab.bc -o ab-opt.bc
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; $ cat a.cpp
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; extern int i;
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; int func(int);
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; int main() {
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; return func(i);
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; }
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; $ cat b.cpp
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; int __attribute__((always_inline)) func(int x) {
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; return x * 2;
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; }
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; Ensure that func inlined into main is described and references the abstract
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; definition in b.cpp's CU.
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_AT_name {{.*}} "a.cpp"
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_type [DW_FORM_ref_addr] (0x00000000[[INT:[a-f0-9]+]]
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; CHECK: 0x[[INLINED:[0-9a-f]*]]:{{.*}}DW_TAG_inlined_subroutine
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; CHECK: DW_AT_abstract_origin {{.*}}[[ABS_FUNC:........]] "_Z4funci"
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_abstract_origin {{.*}}[[ABS_VAR:........]] "x"
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; Check the abstract definition is in the 'b.cpp' CU and doesn't contain any
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; concrete information (address range or variable location)
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_AT_name {{.*}} "b.cpp"
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; CHECK: 0x[[ABS_FUNC]]: DW_TAG_subprogram
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; CHECK-NOT: DW_AT_low_pc
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; CHECK: 0x[[ABS_VAR]]: DW_TAG_formal_parameter
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; CHECK-NOT: DW_AT_location
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; CHECK: DW_AT_type [DW_FORM_ref4] {{.*}} {0x[[INT]]}
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; CHECK-NOT: DW_AT_location
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; CHECK: 0x[[INT]]: DW_TAG_base_type
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; CHECK: DW_AT_name {{.*}} "int"
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; Check the concrete out of line definition references the abstract and
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; provides the address range and variable location
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; CHECK: 0x[[FUNC:[0-9a-f]*]]{{.*}}DW_TAG_subprogram
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; CHECK: DW_AT_low_pc
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; CHECK: DW_AT_abstract_origin {{.*}} {0x[[ABS_FUNC]]} "_Z4funci"
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_location
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; CHECK: DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]} "x"
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; Check that both the inline and the non out of line version of func are
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; correctly referenced in the accelerator table. Before r221837, the one
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; in the second compilation unit had a wrong offset
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; CHECK-ACCEL: .apple_names contents:
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; CHECK-ACCEL: String{{.*}}"func"
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; CHECK-ACCEL-NOT: String
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; CHECK-ACCEL: Atom[0]{{.*}}[[INLINED]]
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; CHECK-ACCEL-NOT: String
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; CHECK-ACCEL: Atom[0]{{.*}}[[FUNC]]
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@i = external global i32
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; Function Attrs: uwtable
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define i32 @main() #0 !dbg !4 {
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entry:
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%x.addr.i = alloca i32, align 4
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%retval = alloca i32, align 4
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store i32 0, i32* %retval
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%0 = load i32, i32* @i, align 4, !dbg !19
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%1 = bitcast i32* %x.addr.i to i8*
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call void @llvm.lifetime.start(i64 4, i8* %1)
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store i32 %0, i32* %x.addr.i, align 4
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call void @llvm.dbg.declare(metadata i32* %x.addr.i, metadata !120, metadata !DIExpression()), !dbg !21
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%2 = load i32, i32* %x.addr.i, align 4, !dbg !22
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%mul.i = mul nsw i32 %2, 2, !dbg !22
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%3 = bitcast i32* %x.addr.i to i8*, !dbg !22
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call void @llvm.lifetime.end(i64 4, i8* %3), !dbg !22
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ret i32 %mul.i, !dbg !19
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}
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; Function Attrs: alwaysinline nounwind uwtable
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define i32 @_Z4funci(i32 %x) #1 !dbg !12 {
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !20, metadata !DIExpression()), !dbg !23
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%0 = load i32, i32* %x.addr, align 4, !dbg !24
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%mul = mul nsw i32 %0, 2, !dbg !24
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ret i32 %mul, !dbg !24
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
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; Function Attrs: nounwind
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declare void @llvm.lifetime.start(i64, i8* nocapture) #3
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; Function Attrs: nounwind
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declare void @llvm.lifetime.end(i64, i8* nocapture) #3
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attributes #0 = { uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { alwaysinline nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0, !9}
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!llvm.module.flags = !{!16, !17}
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!llvm.ident = !{!18, !18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, retainedNodes: !2)
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!5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo")
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8}
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !10, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!10 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
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!12 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !9, scopeLine: 1, file: !10, scope: !13, type: !14, retainedNodes: !2)
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!13 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo")
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!14 = !DISubroutineType(types: !15)
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!15 = !{!8, !8}
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!16 = !{i32 2, !"Dwarf Version", i32 4}
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!17 = !{i32 2, !"Debug Info Version", i32 3}
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!18 = !{!"clang version 3.5.0 "}
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!19 = !DILocation(line: 4, scope: !4)
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!20 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)
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!120 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8)
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!21 = !DILocation(line: 1, scope: !12, inlinedAt: !19)
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!22 = !DILocation(line: 2, scope: !12, inlinedAt: !19)
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!23 = !DILocation(line: 1, scope: !12)
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!24 = !DILocation(line: 2, scope: !12)
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