; RUN: llc -O2 < %s | FileCheck %s
; RUN: llc -O2 -regalloc=basic < %s | FileCheck %s
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"
target triple = "x86_64-apple-darwin10"

%struct.a = type { i32, %struct.a* }

@llvm.used = appending global [1 x i8*] [i8* bitcast (i8* (%struct.a*)* @bar to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]

define i8* @bar(%struct.a* %myvar) nounwind optsize noinline ssp {
entry:
  tail call void @llvm.dbg.value(metadata %struct.a* %myvar, i64 0, metadata !8, metadata !{!"0x102"})
  %0 = getelementptr inbounds %struct.a, %struct.a* %myvar, i64 0, i32 0, !dbg !28 ; <i32*> [#uses=1]
  %1 = load i32, i32* %0, align 8, !dbg !28            ; <i32> [#uses=1]
  tail call void @foo(i32 %1) nounwind optsize noinline ssp, !dbg !28
  %2 = bitcast %struct.a* %myvar to i8*, !dbg !30 ; <i8*> [#uses=1]
  ret i8* %2, !dbg !30
}

declare void @foo(i32) nounwind optsize noinline ssp

declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone

!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!38}

!0 = !{!"0x34\00ret\00ret\00\007\000\001", !1, !1, !3, null, null} ; [ DW_TAG_variable ]
!1 = !{!"0x29", !36} ; [ DW_TAG_file_type ]
!2 = !{!"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\001\00\000\00\001", !36, !37, !37, !32, !31,  !37} ; [ DW_TAG_compile_unit ]
!3 = !{!"0x24\00int\000\0032\0032\000\000\005", !36, !1} ; [ DW_TAG_base_type ]
!4 = !{!"0x101\00x\0012\000", !5, !1, !3} ; [ DW_TAG_arg_variable ]
!5 = !{!"0x2e\00foo\00foo\00foo\0013\000\001\000\006\000\001\0013", !36, !1, !6, null, void (i32)* @foo, null, null, !33} ; [ DW_TAG_subprogram ]
!6 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!7 = !{null, !3}
!8 = !{!"0x101\00myvar\0017\000", !9, !1, !13} ; [ DW_TAG_arg_variable ]
!9 = !{!"0x2e\00bar\00bar\00bar\0017\000\001\000\006\000\001\0017", !36, !1, !10, null, i8* (%struct.a*)* @bar, null, null, !34} ; [ DW_TAG_subprogram ]
!10 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!11 = !{!12, !13}
!12 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, null} ; [ DW_TAG_pointer_type ]
!13 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !14} ; [ DW_TAG_pointer_type ]
!14 = !{!"0x13\00a\002\00128\0064\000\000\000", !36, !1, null, !15, null, null, null} ; [ DW_TAG_structure_type ] [a] [line 2, size 128, align 64, offset 0] [def] [from ]
!15 = !{!16, !17}
!16 = !{!"0xd\00c\003\0032\0032\000\000", !36, !14, !3} ; [ DW_TAG_member ]
!17 = !{!"0xd\00d\004\0064\0064\0064\000", !36, !14, !13} ; [ DW_TAG_member ]
!18 = !{!"0x101\00argc\0022\000", !19, !1, !3} ; [ DW_TAG_arg_variable ]
!19 = !{!"0x2e\00main\00main\00main\0022\000\001\000\006\000\001\0022", !36, !1, !20, null, null, null, null, !35} ; [ DW_TAG_subprogram ]
!20 = !{!"0x15\00\000\000\000\000\000\000", !36, !1, null, !21, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!21 = !{!3, !3, !22}
!22 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !23} ; [ DW_TAG_pointer_type ]
!23 = !{!"0xf\00\000\0064\0064\000\000", !36, !1, !24} ; [ DW_TAG_pointer_type ]
!24 = !{!"0x24\00char\000\008\008\000\000\006", !36, !1} ; [ DW_TAG_base_type ]
!25 = !{!"0x101\00argv\0022\000", !19, !1, !22} ; [ DW_TAG_arg_variable ]
!26 = !{!"0x100\00e\0023\000", !27, !1, !14} ; [ DW_TAG_auto_variable ]
!27 = !{!"0xb\0022\000\000", !36, !19} ; [ DW_TAG_lexical_block ]
!28 = !MDLocation(line: 18, scope: !29)
!29 = !{!"0xb\0017\000\001", !36, !9} ; [ DW_TAG_lexical_block ]
!30 = !MDLocation(line: 19, scope: !29)
!31 = !{!0}
!32 = !{!5, !9, !19}
!33 = !{!4}
!34 = !{!8}
!35 = !{!18, !25, !26}
!36 = !{!"foo.c", !"/tmp/"}
!37 = !{}

; The variable bar:myvar changes registers after the first movq.
; It is cobbered by popq %rbx
; CHECK: movq
; CHECK-NEXT: [[LABEL:Ltmp[0-9]*]]
; CHECK: .loc	1 19 0
; CHECK: popq
; CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]]


; CHECK: Ldebug_loc0:
; CHECK-NEXT: [[SET1:.*]] = Lfunc_begin0-Lfunc_begin0
; CHECK-NEXT: .quad   [[SET1]]
; CHECK-NEXT: [[SET2:.*]] = [[LABEL]]-Lfunc_begin0
; CHECK-NEXT: .quad   [[SET2]]
; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}}               ## Loc expr size
; CHECK-NEXT: .short  Lset{{.*}}
; CHECK-NEXT: Ltmp{{.*}}:
; CHECK-NEXT: .byte   85
; CHECK-NEXT: Ltmp{{.*}}:
; CHECK-NEXT: [[SET3:.*]] = [[LABEL]]-Lfunc_begin0
; CHECK-NEXT: .quad   [[SET3]]
; CHECK-NEXT: [[SET4:.*]] = [[CLOBBER]]-Lfunc_begin0
; CHECK-NEXT: .quad   [[SET4]]
; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}}               ## Loc expr size
; CHECK-NEXT: .short  Lset{{.*}}
; CHECK-NEXT: Ltmp{{.*}}:
; CHECK-NEXT: .byte   83
; CHECK-NEXT: Ltmp{{.*}}:
!38 = !{i32 1, !"Debug Info Version", i32 2}