140e1894f2
Patch 1/4 adding bitcode support. Store whether or not a function is using Key Instructions in its DISubprogram so that we don't need to rely on the -mllvm flag -dwarf-use-key-instructions to determine whether or not to interpret Key Instructions metadata to decide is_stmt placement at DWARF emission time. This makes bitcode support simple and enables well defined mixing of non-key-instructions and key-instructions functions in an LTO context. This patch adds the bit (using DISubprogram::SubclassData1). PR 144104 and 144103 use it during DWARF emission. PR 44102 adds bitcode support. See pull request for overview of alternative attempts.
46 lines
1.6 KiB
LLVM
46 lines
1.6 KiB
LLVM
; RUN: opt %s -passes=inline -S -o - | FileCheck %s
|
|
|
|
;; $ cat test.cpp
|
|
;; int g;
|
|
;; [[clang::always_inline, gnu::nodebug]] void a() { g = 1; }
|
|
;; void b() { a(); }
|
|
;;
|
|
;; Check the inlined instructions don't inherit the call's atom info.
|
|
;; FIXME: Perhaps we want to do actually do that, to preserve existing
|
|
;; behaviour? Unclear what's best.
|
|
|
|
; CHECK: _Z1bv()
|
|
; CHECK: store i32 1, ptr @g, align 4, !dbg [[DBG:!.*]]
|
|
|
|
; CHECK: distinct !DISubprogram(name: "b", {{.*}}keyInstructions: true)
|
|
; CHECK: [[DBG]] = !DILocation(line: 3, scope: ![[#]])
|
|
|
|
@g = hidden global i32 0, align 4
|
|
|
|
define hidden void @_Z1av() {
|
|
entry:
|
|
store i32 1, ptr @g, align 4
|
|
ret void
|
|
}
|
|
|
|
define hidden void @_Z1bv() !dbg !15 {
|
|
entry:
|
|
call void @_Z1av(), !dbg !18
|
|
ret void, !dbg !19
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!2, !3}
|
|
!llvm.ident = !{!10}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_17, file: !1, producer: "clang version 19.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, nameTableKind: None)
|
|
!1 = !DIFile(filename: "test.cpp", directory: "/")
|
|
!2 = !{i32 7, !"Dwarf Version", i32 5}
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!10 = !{!"clang version 19.0.0"}
|
|
!15 = distinct !DISubprogram(name: "b", scope: !1, file: !1, line: 3, type: !16, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
|
|
!16 = !DISubroutineType(types: !17)
|
|
!17 = !{}
|
|
!18 = !DILocation(line: 3, scope: !15, atomGroup: 1, atomRank: 1)
|
|
!19 = !DILocation(line: 3, scope: !15, atomGroup: 2, atomRank: 1)
|