mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 23:29:22 +00:00
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
65 lines
4.6 KiB
LLVM
65 lines
4.6 KiB
LLVM
; RUN: llc < %s -march=hexagon -mcpu=hexagonv4 -O2 -disable-lsr | FileCheck %s
|
|
; ModuleID = 'hwloop-dbg.o'
|
|
target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32"
|
|
target triple = "hexagon"
|
|
|
|
define void @foo(i32* nocapture %a, i32* nocapture %b) nounwind {
|
|
entry:
|
|
tail call void @llvm.dbg.value(metadata !{i32* %a}, i64 0, metadata !13, metadata !{i32 786690}), !dbg !17
|
|
tail call void @llvm.dbg.value(metadata !{i32* %b}, i64 0, metadata !14, metadata !{i32 786690}), !dbg !18
|
|
tail call void @llvm.dbg.value(metadata !30, i64 0, metadata !15, metadata !{i32 786690}), !dbg !19
|
|
br label %for.body, !dbg !19
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
; CHECK: loop0(
|
|
; CHECK-NOT: add({{r[0-9]*}}, #
|
|
; CHECK: endloop0
|
|
%arrayidx.phi = phi i32* [ %a, %entry ], [ %arrayidx.inc, %for.body ]
|
|
%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%b.addr.01 = phi i32* [ %b, %entry ], [ %incdec.ptr, %for.body ]
|
|
%incdec.ptr = getelementptr inbounds i32* %b.addr.01, i32 1, !dbg !21
|
|
tail call void @llvm.dbg.value(metadata !{i32* %incdec.ptr}, i64 0, metadata !14, metadata !{i32 786690}), !dbg !21
|
|
%0 = load i32* %b.addr.01, align 4, !dbg !21
|
|
store i32 %0, i32* %arrayidx.phi, align 4, !dbg !21
|
|
%inc = add nsw i32 %i.02, 1, !dbg !26
|
|
tail call void @llvm.dbg.value(metadata !{i32 %inc}, i64 0, metadata !15, metadata !{i32 786690}), !dbg !26
|
|
%exitcond = icmp eq i32 %inc, 10, !dbg !19
|
|
%arrayidx.inc = getelementptr i32* %arrayidx.phi, i32 1
|
|
br i1 %exitcond, label %for.end, label %for.body, !dbg !19
|
|
|
|
for.end: ; preds = %for.body
|
|
ret void, !dbg !27
|
|
}
|
|
|
|
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
|
|
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!29}
|
|
|
|
!0 = metadata !{i32 786449, metadata !28, i32 12, metadata !"QuIC LLVM Hexagon Clang version 6.1-pre-unknown, (git://git-hexagon-aus.quicinc.com/llvm/clang-mainline.git e9382867661454cdf44addb39430741578e9765c) (llvm/llvm-mainline.git 36412bb1fcf03ed426d4437b41198bae066675ac)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, null, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/usr2/kparzysz/s.hex/t/hwloop-dbg.c] [DW_LANG_C99]
|
|
!2 = metadata !{}
|
|
!3 = metadata !{metadata !5}
|
|
!5 = metadata !{i32 786478, metadata !28, null, metadata !"foo", metadata !"foo", metadata !"", i32 1, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32*, i32*)* @foo, null, null, metadata !11, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
|
|
!6 = metadata !{i32 786473, metadata !28} ; [ DW_TAG_file_type ]
|
|
!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
|
|
!8 = metadata !{null, metadata !9, metadata !9}
|
|
!9 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 32, i64 32, i64 0, i32 0, metadata !10} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from int]
|
|
!10 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
|
|
!11 = metadata !{metadata !13, metadata !14, metadata !15}
|
|
!13 = metadata !{i32 786689, metadata !5, metadata !"a", metadata !6, i32 16777217, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [a] [line 1]
|
|
!14 = metadata !{i32 786689, metadata !5, metadata !"b", metadata !6, i32 33554433, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [b] [line 1]
|
|
!15 = metadata !{i32 786688, metadata !16, metadata !"i", metadata !6, i32 2, metadata !10, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [i] [line 2]
|
|
!16 = metadata !{i32 786443, metadata !28, metadata !5, i32 1, i32 26, i32 0} ; [ DW_TAG_lexical_block ] [/usr2/kparzysz/s.hex/t/hwloop-dbg.c]
|
|
!17 = metadata !{i32 1, i32 15, metadata !5, null}
|
|
!18 = metadata !{i32 1, i32 23, metadata !5, null}
|
|
!19 = metadata !{i32 3, i32 8, metadata !20, null}
|
|
!20 = metadata !{i32 786443, metadata !28, metadata !16, i32 3, i32 3, i32 1} ; [ DW_TAG_lexical_block ] [/usr2/kparzysz/s.hex/t/hwloop-dbg.c]
|
|
!21 = metadata !{i32 4, i32 5, metadata !22, null}
|
|
!22 = metadata !{i32 786443, metadata !28, metadata !20, i32 3, i32 28, i32 2} ; [ DW_TAG_lexical_block ] [/usr2/kparzysz/s.hex/t/hwloop-dbg.c]
|
|
!26 = metadata !{i32 3, i32 23, metadata !20, null}
|
|
!27 = metadata !{i32 6, i32 1, metadata !16, null}
|
|
!28 = metadata !{metadata !"hwloop-dbg.c", metadata !"/usr2/kparzysz/s.hex/t"}
|
|
!29 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
|
|
!30 = metadata !{i32 0}
|