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https://github.com/c64scene-ar/llvm-6502.git
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Update to current output.
PR14039 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193494 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
parent
4d7f7b1bbb
commit
1a57aa4367
@ -650,85 +650,86 @@ Compiled to LLVM, this function would be represented like this:
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.. code-block:: llvm
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define void @_Z3foov() #0 {
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define void @foo() #0 {
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entry:
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%X = alloca i32, align 4 ; [#uses=3 type=i32*]
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%Y = alloca i32, align 4 ; [#uses=2 type=i32*]
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%Z = alloca i32, align 4 ; [#uses=2 type=i32*]
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call void @llvm.dbg.declare(metadata !{i32* %X}, metadata !8), !dbg !10
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%X = alloca i32, align 4
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%Y = alloca i32, align 4
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%Z = alloca i32, align 4
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call void @llvm.dbg.declare(metadata !{i32* %X}, metadata !10), !dbg !12
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; [debug line = 2:7] [debug variable = X]
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store i32 21, i32* %X, align 4, !dbg !11 ; [debug line = 2:13]
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call void @llvm.dbg.declare(metadata !{i32* %Y}, metadata !12), !dbg !13
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store i32 21, i32* %X, align 4, !dbg !12
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call void @llvm.dbg.declare(metadata !{i32* %Y}, metadata !13), !dbg !14
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; [debug line = 3:7] [debug variable = Y]
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store i32 22, i32* %Y, align 4, !dbg !14 ; [debug line = 3:13]
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store i32 22, i32* %Y, align 4, !dbg !14
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call void @llvm.dbg.declare(metadata !{i32* %Z}, metadata !15), !dbg !17
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; [debug line = 5:9] [debug variable = Z]
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store i32 23, i32* %Z, align 4, !dbg !18 ; [debug line = 5:15]
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%0 = load i32* %X, align 4, !dbg !19 ; [#uses=1 type=i32] \
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store i32 23, i32* %Z, align 4, !dbg !17
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%0 = load i32* %X, align 4, !dbg !18
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[debug line = 6:5]
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store i32 %0, i32* %Z, align 4, !dbg !19 ; [debug line = 6:5]
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%1 = load i32* %Y, align 4, !dbg !20 ; [#uses=1 type=i32] \
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store i32 %0, i32* %Z, align 4, !dbg !18
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%1 = load i32* %Y, align 4, !dbg !19
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[debug line = 8:3]
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store i32 %1, i32* %X, align 4, !dbg !20 ; [debug line = 8:3]
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ret void, !dbg !21 ; [debug line = 9:1]
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store i32 %1, i32* %X, align 4, !dbg !19
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ret void, !dbg !20
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}
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; [#uses=3]
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata) #1
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attributes #0 = { optsize zeroext "less-precise-fpmad"="false"
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"no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true"
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"no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false"
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attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false"
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"no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"
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"no-infs-fp-math"="false" "no-nans-fp-math"="false"
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"stack-protector-buffer-size"="8" "unsafe-fp-math"="false"
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"use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8}
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!llvm.ident = !{!9}
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!0 = metadata !{i32 786449, metadata !1, i32 12,
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metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0,
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metadata !2, metadata !2, metadata !3, metadata !2,
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metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] \
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metadata !"clang version 3.4 (trunk 193128) (llvm/trunk 193139)",
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i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3,
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metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] \
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[/private/tmp/foo.c] \
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[DW_LANG_C]
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!1 = metadata !{metadata !"foo.c", metadata !"/private/tmp"}
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[DW_LANG_C99]
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!1 = metadata !{metadata !"t.c", metadata !"/private/tmp"}
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!2 = metadata !{i32 0}
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!3 = metadata !{metadata !4}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"foo",
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metadata !"foo", metadata !"_Z3foov", i32 1, metadata !6,
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i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false,
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void ()* @_Z3foov, null, null, metadata !2, i32 1}
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metadata !"foo", metadata !"", i32 1, metadata !6,
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i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false,
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void ()* @foo, null, null, metadata !2, i32 1}
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; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] \
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[/private/tmp/foo.c]
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!6 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0,
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i64 0, i32 0, null, metadata !7, i32 0, i32 0}
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!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] \
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[/private/tmp/t.c]
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!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0,
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i64 0, i32 0, null, metadata !7, i32 0, null, null, null}
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; [ DW_TAG_subroutine_type ] \
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[line 0, size 0, align 0, offset 0] [from ]
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!7 = metadata !{null}
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!8 = metadata !{i32 786688, metadata !4, metadata !"X", metadata !5, i32 2, \
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metadata !9, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [X] \
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[line 2]
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!9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, \
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i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] \
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[line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!10 = metadata !{i32 2, i32 7, metadata !4, null}
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!11 = metadata !{i32 2, i32 13, metadata !4, null}
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!12 = metadata !{i32 786688, metadata !4, metadata !"Y", metadata !5, i32 3, \
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metadata !9, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [Y] \
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!8 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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!9 = metadata !{metadata !"clang version 3.4 (trunk 193128) (llvm/trunk 193139)"}
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!10 = metadata !{i32 786688, metadata !4, metadata !"X", metadata !5, i32 2,
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metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [X] \
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[line 2]
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!11 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32,
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i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] \
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[line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!12 = metadata !{i32 2, i32 0, metadata !4, null}
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!13 = metadata !{i32 786688, metadata !4, metadata !"Y", metadata !5, i32 3,
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metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [Y] \
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[line 3]
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!13 = metadata !{i32 3, i32 7, metadata !4, null}
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!14 = metadata !{i32 3, i32 13, metadata !4, null}
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!15 = metadata !{i32 786688, metadata !16, metadata !"Z", metadata !5, i32 5, \
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metadata !9, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [Z] \
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!14 = metadata !{i32 3, i32 0, metadata !4, null}
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!15 = metadata !{i32 786688, metadata !16, metadata !"Z", metadata !5, i32 5,
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metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [Z] \
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[line 5]
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!16 = metadata !{i32 786443, metadata !1, metadata !4, i32 4, i32 3, i32 0}
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; [ DW_TAG_lexical_block ] [/private/tmp/foo.c]
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!17 = metadata !{i32 5, i32 9, metadata !16, null}
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!18 = metadata !{i32 5, i32 15, metadata !16, null}
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!19 = metadata !{i32 6, i32 5, metadata !16, null}
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!20 = metadata !{i32 8, i32 3, metadata !4, null}
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!21 = metadata !{i32 9, i32 1, metadata !4, null}
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!16 = metadata !{i32 786443, metadata !1, metadata !4, i32 4, i32 0, i32 0} \
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; [ DW_TAG_lexical_block ] [/private/tmp/t.c]
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!17 = metadata !{i32 5, i32 0, metadata !16, null}
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!18 = metadata !{i32 6, i32 0, metadata !16, null}
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!19 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ]
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!20 = metadata !{i32 9, i32 0, metadata !4, null}
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This example illustrates a few important details about LLVM debugging
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information. In particular, it shows how the ``llvm.dbg.declare`` intrinsic and
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@ -738,23 +739,23 @@ variable definitions, and the code used to implement the function.
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.. code-block:: llvm
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call void @llvm.dbg.declare(metadata !{i32* %X}, metadata !8), !dbg !10
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call void @llvm.dbg.declare(metadata !{i32* %X}, metadata !10), !dbg !12
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; [debug line = 2:7] [debug variable = X]
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The first intrinsic ``%llvm.dbg.declare`` encodes debugging information for the
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variable ``X``. The metadata ``!dbg !10`` attached to the intrinsic provides
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variable ``X``. The metadata ``!dbg !12`` attached to the intrinsic provides
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scope information for the variable ``X``.
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.. code-block:: llvm
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!10 = metadata !{i32 2, i32 7, metadata !4, null}
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!12 = metadata !{i32 2, i32 0, metadata !4, null}
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!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"foo",
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metadata !"foo", metadata !"_Z3foov", i32 1, metadata !6,
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i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false,
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void ()* @_Z3foov, null, null, metadata !2, i32 1}
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; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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metadata !"foo", metadata !"", i32 1, metadata !6,
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i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false,
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void ()* @foo, null, null, metadata !2, i32 1}
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; [ DW_TAG_subprogram ] [line 1] [def] [foo]
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Here ``!10`` is metadata providing location information. It has four fields:
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Here ``!12`` is metadata providing location information. It has four fields:
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line number, column number, scope, and original scope. The original scope
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represents inline location if this instruction is inlined inside a caller, and
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is null otherwise. In this example, scope is encoded by ``!4``, a
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@ -775,12 +776,12 @@ scope information for the variable ``Z``.
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.. code-block:: llvm
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!16 = metadata !{i32 786443, metadata !1, metadata !4, i32 4, i32 3, i32 0}
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; [ DW_TAG_lexical_block ] [/private/tmp/foo.c]
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!17 = metadata !{i32 5, i32 9, metadata !16, null}
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!16 = metadata !{i32 786443, metadata !1, metadata !4, i32 4, i32 0, i32 0}
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; [ DW_TAG_lexical_block ] [/private/tmp/t.c]
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!17 = metadata !{i32 5, i32 0, metadata !16, null}
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Here ``!15`` indicates that ``Z`` is declared at line number 5 and
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column number 9 inside of lexical scope ``!16``. The lexical scope itself
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column number 0 inside of lexical scope ``!16``. The lexical scope itself
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resides inside of subprogram ``!4`` described above.
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The scope information attached with each instruction provides a straightforward
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