mirror of
https://github.com/RPCS3/llvm.git
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a42211335a
Originally committed in r211723, reverted in r211724 due to failure cases found and fixed (ArgumentPromotion: r211872, Inlining: r212065), committed again in r212085 and reverted again in r212089 after fixing some other cases, such as debug info subprogram lists not keeping track of the function they represent (r212128) and then short-circuiting things like LiveDebugVariables that build LexicalScopes for functions that might not have full debug info. And again, I believe the invariant actually holds for some reasonable amount of code (but I'll keep an eye on the buildbots and see what happens... ). Original commit message: PR20038: DebugInfo: Inlined call sites where the caller has debug info but the call itself has no debug location. This situation does bad things when inlined, so I've fixed Clang not to produce inlinable call sites without locations when the caller has debug info (in the one case where I could find that this occurred). This updates the PR20038 test case to be what clang now produces, and readds the assertion that had to be removed due to this bug. I've also beefed up the debug info verifier to help diagnose these issues in the future, and I hope to add checks to the inliner to just assert-fail if it encounters this situation. If, in the future, we decide we have to cope with this situation, the right thing to do is probably to just remove all the DebugLocs from the inlined instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212205 91177308-0d34-0410-b5e6-96231b3b80d8
169 lines
9.3 KiB
LLVM
169 lines
9.3 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; IR generated from clang -O0 with:
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; struct C {
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; ~C();
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; };
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; extern bool b;
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; void fun4() { b && (C(), 1); }
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; __attribute__((always_inline)) C::~C() { }
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; CHECK: DW_TAG_structure_type
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "C"
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: [[C_DTOR_DECL:.*]]: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "~C"
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; CHECK: [[D1_ABS:.*]]: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_MIPS_linkage_name {{.*}} "_ZN1CD1Ev"
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: [[D1_THIS_ABS:.*]]: DW_TAG_formal_parameter
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "this"
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "fun4"
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_lexical_block
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; CHECK-NOT: {{DW_TAG|NULL}}
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_abstract_origin {{.*}} {[[D1_ABS]]}
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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_abstract_origin {{.*}} {[[D1_THIS_ABS]]}
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; FIXME: D2 is actually inlined into D1 but doesn't show up here, possibly due
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; to there being no work in D2 (calling another member function from the dtor
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; causes D2 to show up, calling a free function doesn't).
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; CHECK-NOT: DW_TAG
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; CHECK: NULL
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; CHECK-NOT: DW_TAG
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; CHECK: NULL
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; CHECK-NOT: DW_TAG
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; CHECK: NULL
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%struct.C = type { i8 }
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@b = external global i8
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; Function Attrs: nounwind
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define void @_Z4fun4v() #0 {
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entry:
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%this.addr.i.i = alloca %struct.C*, align 8, !dbg !21
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%this.addr.i = alloca %struct.C*, align 8, !dbg !22
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%agg.tmp.ensured = alloca %struct.C, align 1
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%cleanup.cond = alloca i1
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%0 = load i8* @b, align 1, !dbg !24
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%tobool = trunc i8 %0 to i1, !dbg !24
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store i1 false, i1* %cleanup.cond
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br i1 %tobool, label %land.rhs, label %land.end, !dbg !24
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land.rhs: ; preds = %entry
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store i1 true, i1* %cleanup.cond, !dbg !25
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br label %land.end
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land.end: ; preds = %land.rhs, %entry
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%1 = phi i1 [ false, %entry ], [ true, %land.rhs ]
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%cleanup.is_active = load i1* %cleanup.cond, !dbg !27
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br i1 %cleanup.is_active, label %cleanup.action, label %cleanup.done, !dbg !27
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cleanup.action: ; preds = %land.end
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store %struct.C* %agg.tmp.ensured, %struct.C** %this.addr.i, align 8, !dbg !22
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call void @llvm.dbg.declare(metadata !{%struct.C** %this.addr.i}, metadata !29), !dbg !31
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%this1.i = load %struct.C** %this.addr.i, !dbg !22
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store %struct.C* %this1.i, %struct.C** %this.addr.i.i, align 8, !dbg !21
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call void @llvm.dbg.declare(metadata !{%struct.C** %this.addr.i.i}, metadata !32), !dbg !33
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%this1.i.i = load %struct.C** %this.addr.i.i, !dbg !21
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br label %cleanup.done, !dbg !22
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cleanup.done: ; preds = %cleanup.action, %land.end
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ret void, !dbg !34
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}
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; Function Attrs: alwaysinline nounwind
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define void @_ZN1CD1Ev(%struct.C* %this) unnamed_addr #1 align 2 {
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entry:
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%this.addr.i = alloca %struct.C*, align 8, !dbg !37
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%this.addr = alloca %struct.C*, align 8
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store %struct.C* %this, %struct.C** %this.addr, align 8
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call void @llvm.dbg.declare(metadata !{%struct.C** %this.addr}, metadata !29), !dbg !38
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%this1 = load %struct.C** %this.addr
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store %struct.C* %this1, %struct.C** %this.addr.i, align 8, !dbg !37
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call void @llvm.dbg.declare(metadata !{%struct.C** %this.addr.i}, metadata !32), !dbg !39
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%this1.i = load %struct.C** %this.addr.i, !dbg !37
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ret void, !dbg !37
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}
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; Function Attrs: alwaysinline nounwind
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define void @_ZN1CD2Ev(%struct.C* %this) unnamed_addr #1 align 2 {
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entry:
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%this.addr = alloca %struct.C*, align 8
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store %struct.C* %this, %struct.C** %this.addr, align 8
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call void @llvm.dbg.declare(metadata !{%struct.C** %this.addr}, metadata !32), !dbg !40
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%this1 = load %struct.C** %this.addr
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ret void, !dbg !41
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata) #2
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attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { alwaysinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!18, !19}
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!llvm.ident = !{!20}
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!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !11, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/<stdin>] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"<stdin>", metadata !"/tmp/dbginfo"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786451, metadata !5, null, metadata !"C", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !6, i32 0, null, null, metadata !"_ZTS1C"} ; [ DW_TAG_structure_type ] [C] [line 1, size 8, align 8, offset 0] [def] [from ]
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!5 = metadata !{metadata !"PR20038.cpp", metadata !"/tmp/dbginfo"}
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!6 = metadata !{metadata !7}
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!7 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1C", metadata !"~C", metadata !"~C", metadata !"", i32 2, metadata !8, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, null, i32 2} ; [ DW_TAG_subprogram ] [line 2] [~C]
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!8 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !9, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!9 = metadata !{null, metadata !10}
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!10 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
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!11 = metadata !{metadata !12, metadata !16, metadata !17}
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!12 = metadata !{i32 786478, metadata !5, metadata !13, metadata !"fun4", metadata !"fun4", metadata !"_Z4fun4v", i32 5, metadata !14, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_Z4fun4v, null, null, metadata !2, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [fun4]
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!13 = metadata !{i32 786473, metadata !5} ; [ DW_TAG_file_type ] [/tmp/dbginfo/PR20038.cpp]
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!14 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!15 = metadata !{null}
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!16 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1C", metadata !"~C", metadata !"~C", metadata !"_ZN1CD2Ev", i32 6, metadata !8, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.C*)* @_ZN1CD2Ev, null, metadata !7, metadata !2, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [~C]
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!17 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1C", metadata !"~C", metadata !"~C", metadata !"_ZN1CD1Ev", i32 6, metadata !8, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.C*)* @_ZN1CD1Ev, null, metadata !7, metadata !2, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [~C]
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!18 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
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!19 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
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!20 = metadata !{metadata !"clang version 3.5.0 "}
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!21 = metadata !{i32 6, i32 0, metadata !17, metadata !22}
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!22 = metadata !{i32 5, i32 0, metadata !23, null}
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!23 = metadata !{i32 786443, metadata !5, metadata !12, i32 5, i32 0, i32 3, i32 3} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/PR20038.cpp]
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!24 = metadata !{i32 5, i32 0, metadata !12, null}
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!25 = metadata !{i32 5, i32 0, metadata !26, null}
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!26 = metadata !{i32 786443, metadata !5, metadata !12, i32 5, i32 0, i32 1, i32 1} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/PR20038.cpp]
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!27 = metadata !{i32 5, i32 0, metadata !28, null}
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!28 = metadata !{i32 786443, metadata !5, metadata !12, i32 5, i32 0, i32 2, i32 2} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/PR20038.cpp]
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!29 = metadata !{i32 786689, metadata !17, metadata !"this", null, i32 16777216, metadata !30, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
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!30 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1C]
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!31 = metadata !{i32 0, i32 0, metadata !17, metadata !22}
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!32 = metadata !{i32 786689, metadata !16, metadata !"this", null, i32 16777216, metadata !30, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
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!33 = metadata !{i32 0, i32 0, metadata !16, metadata !21}
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!34 = metadata !{i32 5, i32 0, metadata !35, null}
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!35 = metadata !{i32 786443, metadata !5, metadata !36, i32 5, i32 0, i32 5, i32 5} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/PR20038.cpp]
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!36 = metadata !{i32 786443, metadata !5, metadata !12, i32 5, i32 0, i32 4, i32 4} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/PR20038.cpp]
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!37 = metadata !{i32 6, i32 0, metadata !17, null}
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!38 = metadata !{i32 0, i32 0, metadata !17, null}
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!39 = metadata !{i32 0, i32 0, metadata !16, metadata !37}
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!40 = metadata !{i32 0, i32 0, metadata !16, null}
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!41 = metadata !{i32 6, i32 0, metadata !16, null}
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