mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
fb3abba237
Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
73 lines
3.4 KiB
LLVM
73 lines
3.4 KiB
LLVM
; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s
|
|
; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %s
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
|
|
; Check origin instrumentation of stores.
|
|
; Check that debug info for origin propagation code is set correctly.
|
|
|
|
; Function Attrs: nounwind
|
|
define void @Store(i32* nocapture %p, i32 %x) #0 !dbg !4 {
|
|
entry:
|
|
tail call void @llvm.dbg.value(metadata i32* %p, i64 0, metadata !11, metadata !DIExpression()), !dbg !16
|
|
tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !16
|
|
store i32 %x, i32* %p, align 4, !dbg !17, !tbaa !18
|
|
ret void, !dbg !22
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
|
|
|
|
attributes #0 = { nounwind sanitize_memory "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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 = !{!13, !14}
|
|
!llvm.ident = !{!15}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (204220)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
|
|
!2 = !{}
|
|
!4 = distinct !DISubprogram(name: "Store", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !10)
|
|
!5 = !DIFile(filename: "../2.cc", directory: "/tmp/build0")
|
|
!6 = !DISubroutineType(types: !7)
|
|
!7 = !{null, !8, !9}
|
|
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
|
|
!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!10 = !{!11, !12}
|
|
!11 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
|
|
!12 = !DILocalVariable(name: "x", line: 1, arg: 2, scope: !4, file: !5, type: !9)
|
|
!13 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!14 = !{i32 1, !"Debug Info Version", i32 3}
|
|
!15 = !{!"clang version 3.5.0 (204220)"}
|
|
!16 = !DILocation(line: 1, scope: !4)
|
|
!17 = !DILocation(line: 2, scope: !4)
|
|
!18 = !{!19, !19, i64 0}
|
|
!19 = !{!"int", !20, i64 0}
|
|
!20 = !{!"omnipotent char", !21, i64 0}
|
|
!21 = !{!"Simple C/C++ TBAA"}
|
|
!22 = !DILocation(line: 3, scope: !4)
|
|
|
|
|
|
; CHECK-LABEL: @Store
|
|
; CHECK: load {{.*}} @__msan_param_tls
|
|
; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
|
|
; CHECK: store {{.*}}!dbg ![[DBG:[01-9]+]]
|
|
; CHECK: icmp
|
|
; CHECK: br i1
|
|
; CHECK: <label>
|
|
|
|
; Origin tracking level 1: simply store the origin value
|
|
; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]],{{.*}}!dbg !{{.*}}[[DBG]]
|
|
|
|
; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result.
|
|
; CHECK-ORIGINS2: [[ORIGIN2:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]])
|
|
; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]],{{.*}}!dbg !{{.*}}[[DBG]]
|
|
|
|
; CHECK: br label{{.*}}!dbg !{{.*}}[[DBG]]
|
|
; CHECK: <label>
|
|
; CHECK: store{{.*}}!dbg !{{.*}}[[DBG]]
|
|
; CHECK: ret void
|