mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 04:52:54 +02:00
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
57 lines
2.8 KiB
LLVM
57 lines
2.8 KiB
LLVM
; RUN: opt < %s -S -inline -inline-threshold=2 | FileCheck %s
|
|
; RUN: opt < %s -S -strip-debug -inline -inline-threshold=2 | FileCheck %s
|
|
;
|
|
; The purpose of this test is to check that debug info doesn't influence
|
|
; inlining decisions.
|
|
|
|
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"
|
|
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
|
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
|
|
|
|
define <4 x float> @inner_vectors(<4 x float> %a, <4 x float> %b) {
|
|
entry:
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
%mul = fmul <4 x float> %a, <float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00>
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
%mul1 = fmul <4 x float> %b, <float 5.000000e+00, float 5.000000e+00, float 5.000000e+00, float 5.000000e+00>
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
%add = fadd <4 x float> %mul, %mul1
|
|
ret <4 x float> %add
|
|
}
|
|
|
|
define float @outer_vectors(<4 x float> %a, <4 x float> %b) {
|
|
; CHECK-LABEL: @outer_vectors(
|
|
; CHECK-NOT: call <4 x float> @inner_vectors(
|
|
; CHECK: ret float
|
|
|
|
entry:
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
%call = call <4 x float> @inner_vectors(<4 x float> %a, <4 x float> %b)
|
|
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !DILocalVariable(scope: !6), metadata !DIExpression()), !dbg !DILocation(scope: !6)
|
|
%vecext = extractelement <4 x float> %call, i32 0
|
|
%vecext1 = extractelement <4 x float> %call, i32 1
|
|
%add = fadd float %vecext, %vecext1
|
|
%vecext2 = extractelement <4 x float> %call, i32 2
|
|
%add3 = fadd float %add, %vecext2
|
|
%vecext4 = extractelement <4 x float> %call, i32 3
|
|
%add5 = fadd float %add3, %vecext4
|
|
ret float %add5
|
|
}
|
|
|
|
attributes #0 = { nounwind readnone }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4}
|
|
!llvm.ident = !{!5}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "test.c", directory: "")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 1, !"Debug Info Version", i32 3}
|
|
!5 = !{!""}
|
|
!6 = distinct !DISubprogram(unit: !0)
|