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https://github.com/c64scene-ar/llvm-6502.git
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02474a32eb
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
4.6 KiB
LLVM
66 lines
4.6 KiB
LLVM
; RUN: opt -licm -basicaa < %s -S | FileCheck %s
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define void @dgefa() nounwind ssp {
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entry:
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br label %for.body
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for.body: ; preds = %for.cond.backedge, %entry
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br i1 undef, label %if.then, label %for.cond.backedge, !dbg !11
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for.cond.backedge: ; preds = %for.body61, %for.body61.us, %for.body
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br i1 undef, label %for.end104, label %for.body, !dbg !15
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if.then: ; preds = %for.body
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br i1 undef, label %if.then27, label %if.end.if.end.split_crit_edge.critedge, !dbg !16
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if.then27: ; preds = %if.then
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; CHECK: tail call void @llvm.dbg.value
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tail call void @llvm.dbg.value(metadata !18, i64 0, metadata !19, metadata !{}), !dbg !21
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br label %for.body61.us
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if.end.if.end.split_crit_edge.critedge: ; preds = %if.then
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br label %for.body61
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for.body61.us: ; preds = %for.body61.us, %if.then27
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br i1 undef, label %for.cond.backedge, label %for.body61.us, !dbg !23
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for.body61: ; preds = %for.body61, %if.end.if.end.split_crit_edge.critedge
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br i1 undef, label %for.cond.backedge, label %for.body61, !dbg !23
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for.end104: ; preds = %for.cond.backedge
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ret void, !dbg !24
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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!llvm.module.flags = !{!26}
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!llvm.dbg.sp = !{!0, !6, !9, !10}
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!0 = metadata !{i32 589870, metadata !25, metadata !1, metadata !"idamax", metadata !"idamax", metadata !"", i32 112, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
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!1 = metadata !{i32 589865, metadata !25} ; [ DW_TAG_file_type ]
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!2 = metadata !{i32 589841, metadata !25, i32 12, metadata !"clang version 2.9 (trunk 127169)", i1 true, metadata !"", i32 0, metadata !8, metadata !8, metadata !8, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
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!3 = metadata !{i32 589845, metadata !25, metadata !1, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
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!4 = metadata !{metadata !5}
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!5 = metadata !{i32 589860, null, metadata !2, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
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!6 = metadata !{i32 589870, metadata !25, metadata !1, metadata !"dscal", metadata !"dscal", metadata !"", i32 206, metadata !7, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
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!7 = metadata !{i32 589845, metadata !25, metadata !1, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = metadata !{null}
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!9 = metadata !{i32 589870, metadata !25, metadata !1, metadata !"daxpy", metadata !"daxpy", metadata !"", i32 230, metadata !7, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
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!10 = metadata !{i32 589870, metadata !25, metadata !1, metadata !"dgefa", metadata !"dgefa", metadata !"", i32 267, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ] [line 267] [def] [scope 0] [dgefa]
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!11 = metadata !{i32 281, i32 9, metadata !12, null}
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!12 = metadata !{i32 589835, metadata !25, metadata !13, i32 272, i32 5, i32 32} ; [ DW_TAG_lexical_block ]
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!13 = metadata !{i32 589835, metadata !25, metadata !14, i32 271, i32 5, i32 31} ; [ DW_TAG_lexical_block ]
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!14 = metadata !{i32 589835, metadata !25, metadata !10, i32 267, i32 1, i32 30} ; [ DW_TAG_lexical_block ]
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!15 = metadata !{i32 271, i32 5, metadata !14, null}
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!16 = metadata !{i32 284, i32 10, metadata !17, null}
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!17 = metadata !{i32 589835, metadata !25, metadata !12, i32 282, i32 9, i32 33} ; [ DW_TAG_lexical_block ]
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!18 = metadata !{double undef}
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!19 = metadata !{i32 590080, metadata !14, metadata !"temp", metadata !1, i32 268, metadata !20, i32 0} ; [ DW_TAG_auto_variable ]
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!20 = metadata !{i32 589860, null, metadata !2, metadata !"double", i32 0, i64 64, i64 64, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
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!21 = metadata !{i32 286, i32 14, metadata !22, null}
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!22 = metadata !{i32 589835, metadata !25, metadata !17, i32 285, i32 13, i32 34} ; [ DW_TAG_lexical_block ]
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!23 = metadata !{i32 296, i32 13, metadata !17, null}
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!24 = metadata !{i32 313, i32 1, metadata !14, null}
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!25 = metadata !{metadata !"/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/Benchmarks/CoyoteBench/lpbench.c", metadata !"/private/tmp"}
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!26 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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