1; RUN: llc -O2 < %s | FileCheck %s
2; RUN: llc -O2 -regalloc=basic < %s | FileCheck %s
3target 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"
4target triple = "x86_64-apple-darwin10"
5
6%struct.a = type { i32, %struct.a* }
7
8@llvm.used = appending global [1 x i8*] [i8* bitcast (i8* (%struct.a*)* @bar to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
9
10define i8* @bar(%struct.a* %myvar) nounwind optsize noinline ssp {
11entry:
12  tail call void @llvm.dbg.value(metadata !{%struct.a* %myvar}, i64 0, metadata !8)
13  %0 = getelementptr inbounds %struct.a* %myvar, i64 0, i32 0, !dbg !28 ; <i32*> [#uses=1]
14  %1 = load i32* %0, align 8, !dbg !28            ; <i32> [#uses=1]
15  tail call void @foo(i32 %1) nounwind optsize noinline ssp, !dbg !28
16  %2 = bitcast %struct.a* %myvar to i8*, !dbg !30 ; <i8*> [#uses=1]
17  ret i8* %2, !dbg !30
18}
19
20declare void @foo(i32) nounwind optsize noinline ssp
21
22declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
23
24!llvm.dbg.cu = !{!2}
25
26!0 = metadata !{i32 786484, i32 0, metadata !1, metadata !"ret", metadata !"ret", metadata !"", metadata !1, i32 7, metadata !3, i1 false, i1 true, null, null} ; [ DW_TAG_variable ]
27!1 = metadata !{i32 786473, metadata !36} ; [ DW_TAG_file_type ]
28!2 = metadata !{i32 786449, metadata !36, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, metadata !"", i32 0, metadata !37, metadata !37, metadata !32, metadata !31,  metadata !31, metadata !""} ; [ DW_TAG_compile_unit ]
29!3 = metadata !{i32 786468, metadata !36, metadata !1, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
30!4 = metadata !{i32 786689, metadata !5, metadata !"x", metadata !1, i32 12, metadata !3, i32 0, null} ; [ DW_TAG_arg_variable ]
31!5 = metadata !{i32 786478, metadata !36, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", i32 13, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true, void (i32)* @foo, null, null, metadata !33, i32 13} ; [ DW_TAG_subprogram ]
32!6 = metadata !{i32 786453, metadata !36, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
33!7 = metadata !{null, metadata !3}
34!8 = metadata !{i32 786689, metadata !9, metadata !"myvar", metadata !1, i32 17, metadata !13, i32 0, null} ; [ DW_TAG_arg_variable ]
35!9 = metadata !{i32 786478, metadata !36, metadata !1, metadata !"bar", metadata !"bar", metadata !"bar", i32 17, metadata !10, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true, i8* (%struct.a*)* @bar, null, null, metadata !34, i32 17} ; [ DW_TAG_subprogram ]
36!10 = metadata !{i32 786453, metadata !36, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !11, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
37!11 = metadata !{metadata !12, metadata !13}
38!12 = metadata !{i32 786447, metadata !36, metadata !1, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ]
39!13 = metadata !{i32 786447, metadata !36, metadata !1, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !14} ; [ DW_TAG_pointer_type ]
40!14 = metadata !{i32 786451, metadata !36, metadata !1, metadata !"a", i32 2, i64 128, i64 64, i64 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [a] [line 2, size 128, align 64, offset 0] [def] [from ]
41!15 = metadata !{metadata !16, metadata !17}
42!16 = metadata !{i32 786445, metadata !36, metadata !14, metadata !"c", i32 3, i64 32, i64 32, i64 0, i32 0, metadata !3} ; [ DW_TAG_member ]
43!17 = metadata !{i32 786445, metadata !36, metadata !14, metadata !"d", i32 4, i64 64, i64 64, i64 64, i32 0, metadata !13} ; [ DW_TAG_member ]
44!18 = metadata !{i32 786689, metadata !19, metadata !"argc", metadata !1, i32 22, metadata !3, i32 0, null} ; [ DW_TAG_arg_variable ]
45!19 = metadata !{i32 786478, metadata !36, metadata !1, metadata !"main", metadata !"main", metadata !"main", i32 22, metadata !20, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true, null, null, null, metadata !35, i32 22} ; [ DW_TAG_subprogram ]
46!20 = metadata !{i32 786453, metadata !36, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !21, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
47!21 = metadata !{metadata !3, metadata !3, metadata !22}
48!22 = metadata !{i32 786447, metadata !36, metadata !1, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !23} ; [ DW_TAG_pointer_type ]
49!23 = metadata !{i32 786447, metadata !36, metadata !1, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !24} ; [ DW_TAG_pointer_type ]
50!24 = metadata !{i32 786468, metadata !36, metadata !1, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ]
51!25 = metadata !{i32 786689, metadata !19, metadata !"argv", metadata !1, i32 22, metadata !22, i32 0, null} ; [ DW_TAG_arg_variable ]
52!26 = metadata !{i32 786688, metadata !27, metadata !"e", metadata !1, i32 23, metadata !14, i32 0, null} ; [ DW_TAG_auto_variable ]
53!27 = metadata !{i32 786443, metadata !36, metadata !19, i32 22, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
54!28 = metadata !{i32 18, i32 0, metadata !29, null}
55!29 = metadata !{i32 786443, metadata !36, metadata !9, i32 17, i32 0, i32 1} ; [ DW_TAG_lexical_block ]
56!30 = metadata !{i32 19, i32 0, metadata !29, null}
57!31 = metadata !{metadata !0}
58!32 = metadata !{metadata !5, metadata !9, metadata !19}
59!33 = metadata !{metadata !4}
60!34 = metadata !{metadata !8}
61!35 = metadata !{metadata !18, metadata !25, metadata !26}
62!36 = metadata !{metadata !"foo.c", metadata !"/tmp/"}
63!37 = metadata !{i32 0}
64
65; The variable bar:myvar changes registers after the first movq.
66; It is cobbered by popq %rbx
67; CHECK: movq
68; CHECK-NEXT: [[LABEL:Ltmp[0-9]*]]
69; CHECK: .loc	1 19 0
70; CHECK: popq
71; CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]]
72
73
74; CHECK: Ldebug_loc0:
75; CHECK-NEXT: .quad   Lfunc_begin0
76; CHECK-NEXT: .quad   [[LABEL]]
77; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}}               ## Loc expr size
78; CHECK-NEXT: .short  Lset{{.*}}
79; CHECK-NEXT: Ltmp{{.*}}:
80; CHECK-NEXT: .byte   85
81; CHECK-NEXT: Ltmp{{.*}}:
82; CHECK-NEXT: .quad   [[LABEL]]
83; CHECK-NEXT: .quad   [[CLOBBER]]
84; CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}}               ## Loc expr size
85; CHECK-NEXT: .short  Lset{{.*}}
86; CHECK-NEXT: Ltmp{{.*}}:
87; CHECK-NEXT: .byte   83
88; CHECK-NEXT: Ltmp{{.*}}:
89