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
121 lines
5.8 KiB
LLVM
121 lines
5.8 KiB
LLVM
; RUN: opt < %s -always-inline -S | FileCheck %s
|
|
|
|
; Original input generated from clang -emit-llvm -S -c -mllvm -disable-llvm-optzns
|
|
;
|
|
; #define CALLS1 f2(); f2();
|
|
; #define CALLS2 f4(); f4();
|
|
; void f1();
|
|
; inline __attribute__((always_inline)) void f2() {
|
|
; f1();
|
|
; }
|
|
; inline __attribute__((always_inline)) void f3() {
|
|
; CALLS1
|
|
; }
|
|
; inline __attribute__((always_inline)) void f4() {
|
|
; f3();
|
|
; }
|
|
; void f() {
|
|
; CALLS2
|
|
; }
|
|
|
|
; There should be unique locations for all 4 of these instructions, correctly
|
|
; describing the inlining that has occurred, even in the face of duplicate call
|
|
; site locations.
|
|
|
|
; The nomenclature used for the tags here is <function name>[cs<number>] where
|
|
; 'cs' is an abbreviation for 'call site' and the number indicates which call
|
|
; site from within the named function this is. (so, given the above inlining, we
|
|
; should have 4 calls to 'f1', two from the first call to f4 and two from the
|
|
; second call to f4)
|
|
|
|
; CHECK: call void @_Z2f1v(), !dbg [[fcs1_f4_f3cs1_f2:![0-9]+]]
|
|
; CHECK: call void @_Z2f1v(), !dbg [[fcs1_f4_f3cs2_f2:![0-9]+]]
|
|
; CHECK: call void @_Z2f1v(), !dbg [[fcs2_f4_f3cs1_f2:![0-9]+]]
|
|
; CHECK: call void @_Z2f1v(), !dbg [[fcs2_f4_f3cs2_f2:![0-9]+]]
|
|
|
|
; CHECK-DAG: [[F:![0-9]+]] = distinct !DISubprogram(name: "f"
|
|
; CHECK-DAG: [[F2:![0-9]+]] = distinct !DISubprogram(name: "f2"
|
|
; CHECK-DAG: [[F3:![0-9]+]] = distinct !DISubprogram(name: "f3"
|
|
; CHECK-DAG: [[F4:![0-9]+]] = distinct !DISubprogram(name: "f4"
|
|
|
|
; CHECK-DAG: [[fcs1_f4_f3cs1_f2]] = {{.*}}, scope: [[F2]], inlinedAt: [[fcs1_f4_f3cs1:![0-9]+]])
|
|
; CHECK-DAG: [[fcs1_f4_f3cs1]] = {{.*}}, scope: [[F3]], inlinedAt: [[fcs1_f4:![0-9]+]])
|
|
; CHECK-DAG: [[fcs1_f4]] = {{.*}}, scope: [[F4]], inlinedAt: [[fcs1:![0-9]+]])
|
|
; CHECK-DAG: [[fcs1]] = {{.*}}, scope: [[F]])
|
|
; CHECK-DAG: [[fcs1_f4_f3cs2_f2]] = {{.*}}, scope: [[F2]], inlinedAt: [[fcs1_f4_f3cs2:![0-9]+]])
|
|
; CHECK-DAG: [[fcs1_f4_f3cs2]] = {{.*}}, scope: [[F3]], inlinedAt: [[fcs1_f4]])
|
|
|
|
; CHECK-DAG: [[fcs2_f4_f3cs1_f2]] = {{.*}}, scope: [[F2]], inlinedAt: [[fcs2_f4_f3cs1:![0-9]+]])
|
|
; CHECK-DAG: [[fcs2_f4_f3cs1]] = {{.*}}, scope: [[F3]], inlinedAt: [[fcs2_f4:![0-9]+]])
|
|
; CHECK-DAG: [[fcs2_f4]] = {{.*}}, scope: [[F4]], inlinedAt: [[fcs2:![0-9]+]])
|
|
; CHECK-DAG: [[fcs2]] = {{.*}}, scope: [[F]])
|
|
; CHECK-DAG: [[fcs2_f4_f3cs2_f2]] = {{.*}}, scope: [[F2]], inlinedAt: [[fcs2_f4_f3cs2:![0-9]+]])
|
|
; CHECK-DAG: [[fcs2_f4_f3cs2]] = {{.*}}, scope: [[F3]], inlinedAt: [[fcs2_f4]])
|
|
|
|
$_Z2f4v = comdat any
|
|
|
|
$_Z2f3v = comdat any
|
|
|
|
$_Z2f2v = comdat any
|
|
|
|
; Function Attrs: uwtable
|
|
define void @_Z1fv() #0 !dbg !4 {
|
|
entry:
|
|
call void @_Z2f4v(), !dbg !13
|
|
call void @_Z2f4v(), !dbg !13
|
|
ret void, !dbg !14
|
|
}
|
|
|
|
; Function Attrs: alwaysinline inlinehint uwtable
|
|
define linkonce_odr void @_Z2f4v() #1 comdat !dbg !7 {
|
|
entry:
|
|
call void @_Z2f3v(), !dbg !15
|
|
ret void, !dbg !16
|
|
}
|
|
|
|
; Function Attrs: alwaysinline inlinehint uwtable
|
|
define linkonce_odr void @_Z2f3v() #1 comdat !dbg !8 {
|
|
entry:
|
|
call void @_Z2f2v(), !dbg !17
|
|
call void @_Z2f2v(), !dbg !17
|
|
ret void, !dbg !18
|
|
}
|
|
|
|
; Function Attrs: alwaysinline inlinehint uwtable
|
|
define linkonce_odr void @_Z2f2v() #1 comdat !dbg !9 {
|
|
entry:
|
|
call void @_Z2f1v(), !dbg !19
|
|
ret void, !dbg !20
|
|
}
|
|
|
|
declare void @_Z2f1v() #2
|
|
|
|
attributes #0 = { 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 = { alwaysinline inlinehint 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 #2 = { "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" }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!10, !11}
|
|
!llvm.ident = !{!12}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 226474) (llvm/trunk 226478)", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "debug-info-duplicate-calls.cpp", directory: "/tmp/dbginfo")
|
|
!2 = !{}
|
|
!4 = distinct !DISubprogram(name: "f", line: 13, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 13, file: !1, scope: !5, type: !6, variables: !2)
|
|
!5 = !DIFile(filename: "debug-info-duplicate-calls.cpp", directory: "/tmp/dbginfo")
|
|
!6 = !DISubroutineType(types: !2)
|
|
!7 = distinct !DISubprogram(name: "f4", line: 10, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, variables: !2)
|
|
!8 = distinct !DISubprogram(name: "f3", line: 7, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 7, file: !1, scope: !5, type: !6, variables: !2)
|
|
!9 = distinct !DISubprogram(name: "f2", line: 4, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !1, scope: !5, type: !6, variables: !2)
|
|
!10 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!11 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!12 = !{!"clang version 3.7.0 (trunk 226474) (llvm/trunk 226478)"}
|
|
!13 = !DILocation(line: 14, column: 3, scope: !4)
|
|
!14 = !DILocation(line: 15, column: 1, scope: !4)
|
|
!15 = !DILocation(line: 11, column: 3, scope: !7)
|
|
!16 = !DILocation(line: 12, column: 1, scope: !7)
|
|
!17 = !DILocation(line: 8, column: 3, scope: !8)
|
|
!18 = !DILocation(line: 9, column: 1, scope: !8)
|
|
!19 = !DILocation(line: 5, column: 3, scope: !9)
|
|
!20 = !DILocation(line: 6, column: 1, scope: !9)
|