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; RUN: llc < %s - | FileCheck %s
;
; FIXME: A potentially more interesting test case would be:
; %call = @bar()
; dbg.value j=0
; %call2 = @bar()
; dbg.value j=%call
;
; We cannot current handle the above sequence because codegenprepare
; hoists the second dbg.value above %call2, which then appears to
; conflict with j=0. It does this because SelectionDAG cannot handle
; global debug values.
target triple = "x86_64-apple-darwin10.0.0"
;CHECK: ## DW_OP_consts
;CHECK-NEXT: .byte 42
define i32 @foobar() nounwind readonly noinline ssp {
entry:
tail call void @llvm.dbg.value(metadata i32 42, i64 0, metadata !6, metadata !MDExpression()), !dbg !9
%call = tail call i32 @bar(), !dbg !11
tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !6, metadata !MDExpression()), !dbg !11
%call2 = tail call i32 @bar(), !dbg !11
%add = add nsw i32 %call2, %call, !dbg !12
ret i32 %add, !dbg !10
}
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
declare i32 @bar() nounwind readnone
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!17}
!0 = !MDSubprogram(name: "foobar", linkageName: "foobar", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !15, scope: !1, type: !3, function: i32 ()* @foobar, variables: !14)
!1 = !MDFile(filename: "mu.c", directory: "/private/tmp")
!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114183)", isOptimized: true, emissionKind: 1, file: !15, enums: !16, retainedTypes: !16, subprograms: !13, imports: null)
!3 = !MDSubroutineType(types: !4)
!4 = !{!5}
!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!6 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 15, scope: !7, file: !1, type: !5)
!7 = distinct !MDLexicalBlock(line: 12, column: 52, file: !15, scope: !0)
!8 = !{i32 42}
!9 = !MDLocation(line: 15, column: 12, scope: !7)
!10 = !MDLocation(line: 23, column: 3, scope: !7)
!11 = !MDLocation(line: 17, column: 3, scope: !7)
!12 = !MDLocation(line: 18, column: 3, scope: !7)
!13 = !{!0}
!14 = !{!6}
!15 = !MDFile(filename: "mu.c", directory: "/private/tmp")
!16 = !{i32 0}
!17 = !{i32 1, !"Debug Info Version", i32 3}
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