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277 lines
13 KiB
277 lines
13 KiB
# RUN: llc -o - %s -start-after=patchable-function -filetype=obj -O0 -mtriple=i386-unknown-linux-gnu -dwarf-version=4 | llvm-dwarfdump -v - | FileCheck %s
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# From the code:
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#
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# debug-loc-offset1.cc
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# int bar (int b) {
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# return b+4;
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# }
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#
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# debug-loc-offset2.cc
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# struct A {
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# int var;
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# virtual char foo();
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# };
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#
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# void baz(struct A a) {
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# int z = 2;
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# if (a.var > 2)
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# z++;
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# if (a.foo() == 'a')
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# z++;
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# }
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#
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# Compiled separately for i386-pc-linux-gnu and linked together.
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# This ensures that we have multiple compile units and multiple location lists
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# so that we can verify that
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# debug_loc entries are relative to the low_pc of the CU. The loc entry for
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# the byval argument in foo.cpp is in the second CU and so should have
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# an offset relative to that CU rather than from the beginning of the text
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# section.
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#
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# Checking that we have two compile units with two sets of high/lo_pc.
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# CHECK: .debug_info contents
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# CHECK: DW_TAG_compile_unit
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# CHECK: DW_AT_low_pc {{.*}} (0x00000020 ".text")
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# CHECK: DW_AT_high_pc
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#
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# CHECK: DW_TAG_subprogram
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# CHECK-NOT: DW_TAG
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# CHECK: DW_AT_linkage_name [DW_FORM_strp]{{.*}}"_Z3baz1A"
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# CHECK-NOT: {{DW_TAG|NULL}}
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# CHECK: DW_TAG_formal_parameter
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# CHECK-NOT: DW_TAG
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# CHECK: DW_AT_location [DW_FORM_sec_offset] ({{.*}}
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# CHECK-NEXT: [0x00000029, 0x00000037) ".text": DW_OP_breg0 EAX+0, DW_OP_deref
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# CHECK-NEXT: [0x00000037, 0x00000063) ".text": DW_OP_breg5 EBP-8, DW_OP_deref, DW_OP_deref
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# CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}}"a"
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#
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# CHECK: DW_TAG_variable
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# CHECK: DW_AT_location [DW_FORM_exprloc]
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# CHECK-NOT: DW_AT_location
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#
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# CHECK: DW_TAG_compile_unit
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# CHECK: DW_AT_low_pc {{.*}} (0x00000000 ".text")
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# CHECK: DW_AT_high_pc
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#
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# CHECK: DW_TAG_subprogram
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# CHECK-NOT: DW_TAG
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# CHECK: DW_AT_linkage_name [DW_FORM_strp]{{.*}}"_Z3bari"
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# CHECK-NOT: {{DW_TAG|NULL}}
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# CHECK: DW_TAG_formal_parameter
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# CHECK-NOT: DW_TAG
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# CHECK: DW_AT_location [DW_FORM_sec_offset] ({{.*}}
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# CHECK-NEXT: [0x00000000, 0x0000000a) ".text": DW_OP_consts +0, DW_OP_stack_value
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# CHECK-NEXT: [0x0000000a, 0x00000017) ".text": DW_OP_consts +1, DW_OP_stack_value)
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# CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}}"b"
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#
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# CHECK: .debug_loc contents:
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# CHECK: 0x00000000:
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# CHECK-NEXT: (0x00000000, 0x0000000a): DW_OP_consts +0, DW_OP_stack_value
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# CHECK-NEXT: (0x0000000a, 0x00000017): DW_OP_consts +1, DW_OP_stack_value
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# CHECK: 0x00000022:
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# CHECK-NEXT: (0x00000009, 0x00000017): DW_OP_breg0 EAX+0, DW_OP_deref
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# CHECK-NEXT: (0x00000017, 0x00000043): DW_OP_breg5 EBP-8, DW_OP_deref, DW_OP_deref
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--- |
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target triple = "i386-unknown-linux-gnu"
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%struct.A = type { i32 (...)**, i32 }
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; Function Attrs: nounwind
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define i32 @_Z3bari(i32 %b) #0 !dbg !10 {
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entry:
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%b.addr = alloca i32, align 4
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store i32 %b, i32* %b.addr, align 4
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call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression()), !dbg !15
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%0 = load i32, i32* %b.addr, align 4, !dbg !16
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call void @llvm.dbg.value(metadata i32 1, metadata !14, metadata !DIExpression()), !dbg !15
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%add = add nsw i32 %0, 4, !dbg !16
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ret i32 %add, !dbg !16
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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define void @_Z3baz1A(%struct.A* %a) #2 !dbg !17 {
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entry:
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%z = alloca i32, align 4
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call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !20, metadata !DIExpression(DW_OP_deref)), !dbg !21
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call void @llvm.dbg.declare(metadata i32* %z, metadata !22, metadata !DIExpression()), !dbg !23
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store i32 2, i32* %z, align 4, !dbg !23
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%var = getelementptr inbounds %struct.A, %struct.A* %a, i32 0, i32 1, !dbg !24
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%0 = load i32, i32* %var, align 4, !dbg !24
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%cmp = icmp sgt i32 %0, 2, !dbg !24
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br i1 %cmp, label %if.then, label %if.end, !dbg !24
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if.then: ; preds = %entry
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%1 = load i32, i32* %z, align 4, !dbg !26
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%inc = add nsw i32 %1, 1, !dbg !26
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store i32 %inc, i32* %z, align 4, !dbg !26
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br label %if.end, !dbg !26
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if.end: ; preds = %if.then, %entry
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%call = call signext i8 @_ZN1A3fooEv(%struct.A* %a), !dbg !27
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%conv = sext i8 %call to i32, !dbg !27
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%cmp1 = icmp eq i32 %conv, 97, !dbg !27
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br i1 %cmp1, label %if.then2, label %if.end4, !dbg !27
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if.then2: ; preds = %if.end
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%2 = load i32, i32* %z, align 4, !dbg !29
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%inc3 = add nsw i32 %2, 1, !dbg !29
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store i32 %inc3, i32* %z, align 4, !dbg !29
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br label %if.end4, !dbg !29
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if.end4: ; preds = %if.then2, %if.end
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ret void, !dbg !30
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}
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declare signext i8 @_ZN1A3fooEv(%struct.A*) #2
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #3
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attributes #0 = { nounwind "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 = { nounwind readnone speculatable }
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attributes #2 = { "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 #3 = { nounwind }
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!llvm.dbg.cu = !{!0, !3}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9, !9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.5.0 (210479)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc")
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!2 = !{}
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!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 3.5.0 (210479)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !5, globals: !2, imports: !2)
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!4 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc")
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!5 = !{!6}
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!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !4, line: 1, flags: DIFlagFwdDecl, identifier: "_ZTS1A")
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.5.0 (210479)"}
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!10 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", scope: !1, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true, scopeLine: 1, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!13, !13}
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!13 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!14 = !DILocalVariable(name: "b", arg: 1, scope: !10, file: !1, line: 1, type: !13)
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!15 = !DILocation(line: 1, scope: !10)
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!16 = !DILocation(line: 2, scope: !10)
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!17 = distinct !DISubprogram(name: "baz", linkageName: "_Z3baz1A", scope: !4, file: !4, line: 6, type: !18, isLocal: false, isDefinition: true, scopeLine: 6, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2)
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!18 = !DISubroutineType(types: !19)
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!19 = !{null, !6}
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!20 = !DILocalVariable(name: "a", arg: 1, scope: !17, file: !4, line: 6, type: !6)
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!21 = !DILocation(line: 6, scope: !17)
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!22 = !DILocalVariable(name: "z", scope: !17, file: !4, line: 7, type: !13)
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!23 = !DILocation(line: 7, scope: !17)
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!24 = !DILocation(line: 8, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !17, file: !4, line: 8)
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!26 = !DILocation(line: 9, scope: !25)
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!27 = !DILocation(line: 10, scope: !28)
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!28 = distinct !DILexicalBlock(scope: !17, file: !4, line: 10)
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!29 = !DILocation(line: 11, scope: !28)
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!30 = !DILocation(line: 12, scope: !17)
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...
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---
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name: _Z3bari
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alignment: 16
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tracksRegLiveness: true
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frameInfo:
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stackSize: 8
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offsetAdjustment: -4
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maxAlignment: 4
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maxCallFrameSize: 0
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fixedStack:
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- { id: 0, type: spill-slot, offset: -8, size: 4, alignment: 8, stack-id: default }
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- { id: 1, size: 4, alignment: 16, stack-id: default }
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stack:
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- { id: 0, type: spill-slot, offset: -12, size: 4, alignment: 4, stack-id: default }
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body: |
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bb.0.entry:
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frame-setup PUSH32r killed $ebp, implicit-def $esp, implicit $esp
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CFI_INSTRUCTION def_cfa_offset 8
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CFI_INSTRUCTION offset $ebp, -8
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$ebp = frame-setup MOV32rr $esp
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CFI_INSTRUCTION def_cfa_register $ebp
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frame-setup PUSH32r undef $eax, implicit-def $esp, implicit $esp
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renamable $eax = MOV32rm $ebp, 1, $noreg, 8, $noreg :: (load 4 from %fixed-stack.1)
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DBG_VALUE 0, 0, !14, !DIExpression(), debug-location !15
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renamable $ecx = MOV32rm $ebp, 1, $noreg, 8, $noreg, debug-location !16 :: (load 4 from %ir.b.addr)
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DBG_VALUE 1, 0, !14, !DIExpression(), debug-location !15
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renamable $ecx = ADD32ri8 renamable $ecx, 4, implicit-def $eflags, debug-location !16
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MOV32mr $ebp, 1, $noreg, -4, $noreg, killed $eax :: (store 4 into %fixed-stack.1)
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$eax = MOV32rr killed $ecx, debug-location !16
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$esp = frame-destroy ADD32ri8 $esp, 4, implicit-def dead $eflags, debug-location !16
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$ebp = frame-destroy POP32r implicit-def $esp, implicit $esp, debug-location !16
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CFI_INSTRUCTION def_cfa $esp, 4, debug-location !16
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RETL implicit killed $eax, debug-location !16
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...
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---
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name: _Z3baz1A
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alignment: 16
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tracksRegLiveness: true
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frameInfo:
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stackSize: 28
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offsetAdjustment: -24
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maxAlignment: 4
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adjustsStack: true
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hasCalls: true
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maxCallFrameSize: 4
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fixedStack:
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- { id: 0, type: spill-slot, offset: -8, size: 4, alignment: 8, stack-id: default }
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- { id: 1, size: 4, alignment: 16, stack-id: default, isImmutable: true }
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stack:
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- { id: 0, name: z, offset: -12, size: 4, alignment: 4, stack-id: default,
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debug-info-variable: '!22', debug-info-expression: '!DIExpression()',
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debug-info-location: '!23' }
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- { id: 1, type: spill-slot, offset: -16, size: 4, alignment: 4, stack-id: default }
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body: |
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bb.0.entry:
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frame-setup PUSH32r killed $ebp, implicit-def $esp, implicit $esp
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CFI_INSTRUCTION def_cfa_offset 8
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CFI_INSTRUCTION offset $ebp, -8
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$ebp = frame-setup MOV32rr $esp
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CFI_INSTRUCTION def_cfa_register $ebp
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$esp = frame-setup SUB32ri8 $esp, 24, implicit-def dead $eflags
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renamable $eax = MOV32rm $ebp, 1, $noreg, 8, $noreg :: (load 4 from %fixed-stack.1)
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DBG_VALUE renamable $eax, 0, !20, !DIExpression(DW_OP_deref), debug-location !21
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MOV32mi $ebp, 1, $noreg, -4, $noreg, 2, debug-location !23 :: (store 4 into %ir.z)
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CMP32mi8 renamable $eax, 1, $noreg, 4, $noreg, 2, implicit-def $eflags, debug-location !24 :: (load 4 from %ir.var)
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MOV32mr $ebp, 1, $noreg, -8, $noreg, killed $eax :: (store 4 into %stack.1)
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DBG_VALUE $ebp, 0, !20, !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !21
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JCC_1 %bb.2, 14, implicit $eflags, debug-location !24
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bb.1.if.then:
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DBG_VALUE $ebp, 0, !20, !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !21
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renamable $eax = MOV32rm $ebp, 1, $noreg, -4, $noreg, debug-location !26 :: (load 4 from %ir.z)
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renamable $eax = ADD32ri8 renamable $eax, 1, implicit-def $eflags, debug-location !26
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MOV32mr $ebp, 1, $noreg, -4, $noreg, killed renamable $eax, debug-location !26 :: (store 4 into %ir.z)
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bb.2.if.end:
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DBG_VALUE $ebp, 0, !20, !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !21
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$eax = MOV32rm $ebp, 1, $noreg, -8, $noreg :: (load 4 from %stack.1)
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MOV32mr $esp, 1, $noreg, 0, $noreg, killed renamable $eax, debug-location !27 :: (store 4 into stack)
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CALLpcrel32 @_ZN1A3fooEv, csr_32, implicit $esp, implicit $ssp, implicit-def $al, debug-location !27
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renamable $ecx = MOVSX32rr8 killed renamable $al, debug-location !27
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CMP32ri8 killed renamable $ecx, 97, implicit-def $eflags, debug-location !27
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JCC_1 %bb.4, 5, implicit $eflags, debug-location !27
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bb.3.if.then2:
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DBG_VALUE $ebp, 0, !20, !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !21
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renamable $eax = MOV32rm $ebp, 1, $noreg, -4, $noreg, debug-location !29 :: (load 4 from %ir.z)
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renamable $eax = ADD32ri8 renamable $eax, 1, implicit-def $eflags, debug-location !29
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MOV32mr $ebp, 1, $noreg, -4, $noreg, killed renamable $eax, debug-location !29 :: (store 4 into %ir.z)
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bb.4.if.end4:
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DBG_VALUE $ebp, 0, !20, !DIExpression(DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_deref), debug-location !21
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$esp = frame-destroy ADD32ri8 $esp, 24, implicit-def dead $eflags, debug-location !30
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$ebp = frame-destroy POP32r implicit-def $esp, implicit $esp, debug-location !30
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CFI_INSTRUCTION def_cfa $esp, 4, debug-location !30
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RETL debug-location !30
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...
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