c383f4d655
Prior to this patch, variadic DIExpressions (i.e. ones that contain DW_OP_LLVM_arg) could only be created by salvaging debug values to create stack value expressions, resulting in a DBG_VALUE_LIST being created. As of the previous patch in this patch stack, DBG_INSTR_REF's syntax has been changed to match DBG_VALUE_LIST in preparation for supporting variadic expressions. This patch adds some minor changes needed to allow variadic expressions that aren't stack values to exist, and allows variadic expressions that are trivially reduceable to non-variadic expressions to be handled similarly to non-variadic expressions. Reviewed by: jmorse Differential Revision: https://reviews.llvm.org/D133926
52 lines
2.4 KiB
LLVM
52 lines
2.4 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -start-after=codegenprepare -stop-before=finalize-isel -o - %s -experimental-debug-variable-locations=true | FileCheck %s --implicit-check-not=DBG_PHI
|
|
|
|
; Test that for multiple dbg.values referring to the same argument, we emit a
|
|
; single DBG_PHI and refer to it twice. (Using more than one DBG_PHI is fine,
|
|
; but inefficient).
|
|
|
|
; CHECK-DAG: ![[LOCAL:.*]] = !DILocalVariable(name: "local"
|
|
; CHECK-DAG: ![[LOCAL2:.*]] = !DILocalVariable(name: "local2"
|
|
|
|
; CHECK: DBG_PHI $edi, 1
|
|
|
|
; CHECK: DBG_INSTR_REF ![[LOCAL]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0)
|
|
; CHECK: DBG_INSTR_REF ![[LOCAL2]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0)
|
|
|
|
declare void @bar(i32)
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
define dso_local void @foo_local(i32 %t1a) local_unnamed_addr !dbg !7 {
|
|
entry:
|
|
tail call void @bar(i32 %t1a) #3, !dbg !17
|
|
%bees = add i32 %t1a, 3
|
|
call void @llvm.dbg.value(metadata i32 %t1a, metadata !13, metadata !DIExpression()), !dbg !14
|
|
call void @llvm.dbg.value(metadata i32 %t1a, metadata !19, metadata !DIExpression()), !dbg !14
|
|
tail call void @bar(i32 %bees) #3, !dbg !17
|
|
ret void, !dbg !18
|
|
}
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5}
|
|
!llvm.ident = !{!6}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
|
|
!1 = !DIFile(filename: "foo.c", directory: "")
|
|
!2 = !{}
|
|
!3 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
|
!6 = !{!"clang"}
|
|
!7 = distinct !DISubprogram(name: "foo_local", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
|
|
!8 = !DISubroutineType(types: !9)
|
|
!9 = !{null, !10}
|
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!11 = !{!12, !13}
|
|
!12 = !DILocalVariable(name: "t1a", arg: 1, scope: !7, file: !1, line: 3, type: !10)
|
|
!13 = !DILocalVariable(name: "local", scope: !7, file: !1, line: 4, type: !10)
|
|
!14 = !DILocation(line: 3, column: 20, scope: !7)
|
|
!15 = !DILocation(line: 4, column: 7, scope: !7)
|
|
!16 = !DILocation(line: 5, column: 3, scope: !7)
|
|
!17 = !DILocation(line: 7, column: 3, scope: !7)
|
|
!18 = !DILocation(line: 8, column: 1, scope: !7)
|
|
!19 = !DILocalVariable(name: "local2", scope: !7, file: !1, line: 4, type: !10)
|