mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
229943585f
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! llvm-svn: 218778
67 lines
3.9 KiB
LLVM
67 lines
3.9 KiB
LLVM
; REQUIRES: object-emission
|
|
|
|
; RUN: %llc_dwarf -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
|
|
|
|
; generated by clang from:
|
|
; struct foo {
|
|
; void f1();
|
|
; void f2();
|
|
; };
|
|
;
|
|
; void foo::f1() {
|
|
; }
|
|
|
|
; CHECK: DW_TAG_structure_type
|
|
; CHECK-NEXT: DW_AT_name {{.*}} "foo"
|
|
; CHECK-NOT: NULL
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NOT: NULL
|
|
; CHECK: DW_AT_name {{.*}} "f1"
|
|
; CHECK: DW_TAG_subprogram
|
|
; CHECK-NOT: NULL
|
|
; CHECK: DW_AT_name {{.*}} "f2"
|
|
|
|
|
|
%struct.foo = type { i8 }
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define void @_ZN3foo2f1Ev(%struct.foo* %this) #0 align 2 {
|
|
entry:
|
|
%this.addr = alloca %struct.foo*, align 8
|
|
store %struct.foo* %this, %struct.foo** %this.addr, align 8
|
|
call void @llvm.dbg.declare(metadata !{%struct.foo** %this.addr}, metadata !16, metadata !{}), !dbg !18
|
|
%this1 = load %struct.foo** %this.addr
|
|
ret void, !dbg !19
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
|
|
|
attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #1 = { nounwind readnone }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!15, !20}
|
|
|
|
!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !13, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/member-order.cpp] [DW_LANG_C_plus_plus]
|
|
!1 = metadata !{metadata !"member-order.cpp", metadata !"/tmp/dbginfo"}
|
|
!2 = metadata !{}
|
|
!3 = metadata !{metadata !4}
|
|
!4 = metadata !{i32 786451, metadata !1, null, metadata !"foo", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !5, i32 0, null, null, metadata !"_ZTS3foo"} ; [ DW_TAG_structure_type ] [foo] [line 1, size 8, align 8, offset 0] [def] [from ]
|
|
!5 = metadata !{metadata !6, metadata !11}
|
|
!6 = metadata !{i32 786478, metadata !1, metadata !4, metadata !"f1", metadata !"f1", metadata !"_ZN3foo2f1Ev", i32 2, metadata !7, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !10, i32 2} ; [ DW_TAG_subprogram ] [line 2] [f1]
|
|
!7 = metadata !{i32 786453, i32 0, null, metadata !"", 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}
|
|
!9 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS3foo"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS3foo]
|
|
!10 = metadata !{i32 786468}
|
|
!11 = metadata !{i32 786478, metadata !1, metadata !4, metadata !"f2", metadata !"f2", metadata !"_ZN3foo2f2Ev", i32 3, metadata !7, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !12, i32 3} ; [ DW_TAG_subprogram ] [line 3] [f2]
|
|
!12 = metadata !{i32 786468}
|
|
!13 = metadata !{metadata !14}
|
|
!14 = metadata !{i32 786478, metadata !1, null, metadata !"f1", metadata !"f1", metadata !"_ZN3foo2f1Ev", i32 6, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.foo*)* @_ZN3foo2f1Ev, null, metadata !6, metadata !2, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [f1]
|
|
!15 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
|
|
!16 = metadata !{i32 786689, metadata !14, metadata !"this", null, i32 16777216, metadata !17, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
|
|
!17 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS3foo"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS3foo]
|
|
!18 = metadata !{i32 0, i32 0, metadata !14, null}
|
|
!19 = metadata !{i32 7, i32 0, metadata !14, null}
|
|
!20 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
|