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llvm-6502/test/CodeGen/X86/2010-05-26-DotDebugLoc.ll
Jakob Stoklund Olesen 15a3ea0628 Emit less labels for debug info and stop emitting .loc directives for DBG_VALUEs. 
The .dot directives don't need labels, that is a leftover from when we created
line number info manually.

Instructions following a DBG_VALUE can share its label since the DBG_VALUE
doesn't produce any code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128284 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25 17:20:59 +00:00

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; RUN: llc -O2 < %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-darwin"
%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)
%0 = getelementptr inbounds %struct.a* %myvar, i64 0, i32 0, !dbg !28 ; <i32*> [#uses=1]
%1 = load 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) nounwind readnone
!llvm.dbg.gv = !{!0}
!llvm.dbg.lv = !{!4, !8, !18, !25, !26}
!0 = metadata !{i32 524340, i32 0, metadata !1, metadata !"ret", metadata !"ret", metadata !"", metadata !1, i32 7, metadata !3, i1 false, i1 true, null} ; [ DW_TAG_variable ]
!1 = metadata !{i32 524329, metadata !"foo.c", metadata !"/tmp/", metadata !2} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 524305, i32 0, i32 1, metadata !"foo.c", metadata !"/tmp/", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 524324, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!4 = metadata !{i32 524545, metadata !5, metadata !"x", metadata !1, i32 12, metadata !3} ; [ DW_TAG_arg_variable ]
!5 = metadata !{i32 524334, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 13, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true} ; [ DW_TAG_subprogram ]
!6 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null} ; [ DW_TAG_subroutine_type ]
!7 = metadata !{null, metadata !3}
!8 = metadata !{i32 524545, metadata !9, metadata !"myvar", metadata !1, i32 17, metadata !13} ; [ DW_TAG_arg_variable ]
!9 = metadata !{i32 524334, i32 0, metadata !1, metadata !"bar", metadata !"bar", metadata !"bar", metadata !1, i32 17, metadata !10, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true} ; [ DW_TAG_subprogram ]
!10 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !11, i32 0, null} ; [ DW_TAG_subroutine_type ]
!11 = metadata !{metadata !12, metadata !13}
!12 = metadata !{i32 524303, metadata !1, metadata !"", metadata !1, i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ]
!13 = metadata !{i32 524303, metadata !1, metadata !"", metadata !1, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !14} ; [ DW_TAG_pointer_type ]
!14 = metadata !{i32 524307, metadata !1, metadata !"a", metadata !1, i32 2, i64 128, i64 64, i64 0, i32 0, null, metadata !15, i32 0, null} ; [ DW_TAG_structure_type ]
!15 = metadata !{metadata !16, metadata !17}
!16 = metadata !{i32 524301, metadata !14, metadata !"c", metadata !1, i32 3, i64 32, i64 32, i64 0, i32 0, metadata !3} ; [ DW_TAG_member ]
!17 = metadata !{i32 524301, metadata !14, metadata !"d", metadata !1, i32 4, i64 64, i64 64, i64 64, i32 0, metadata !13} ; [ DW_TAG_member ]
!18 = metadata !{i32 524545, metadata !19, metadata !"argc", metadata !1, i32 22, metadata !3} ; [ DW_TAG_arg_variable ]
!19 = metadata !{i32 524334, i32 0, metadata !1, metadata !"main", metadata !"main", metadata !"main", metadata !1, i32 22, metadata !20, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true} ; [ DW_TAG_subprogram ]
!20 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !21, i32 0, null} ; [ DW_TAG_subroutine_type ]
!21 = metadata !{metadata !3, metadata !3, metadata !22}
!22 = metadata !{i32 524303, metadata !1, metadata !"", metadata !1, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !23} ; [ DW_TAG_pointer_type ]
!23 = metadata !{i32 524303, metadata !1, metadata !"", metadata !1, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !24} ; [ DW_TAG_pointer_type ]
!24 = metadata !{i32 524324, metadata !1, metadata !"char", metadata !1, i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ]
!25 = metadata !{i32 524545, metadata !19, metadata !"argv", metadata !1, i32 22, metadata !22} ; [ DW_TAG_arg_variable ]
!26 = metadata !{i32 524544, metadata !27, metadata !"e", metadata !1, i32 23, metadata !14} ; [ DW_TAG_auto_variable ]
!27 = metadata !{i32 524299, metadata !19, i32 22, i32 0} ; [ DW_TAG_lexical_block ]
!28 = metadata !{i32 18, i32 0, metadata !29, null}
!29 = metadata !{i32 524299, metadata !9, i32 17, i32 0} ; [ DW_TAG_lexical_block ]
!30 = metadata !{i32 19, i32 0, metadata !29, null}
; 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: .quad Lfunc_begin0
; CHECK-NEXT: .quad [[LABEL]]
; CHECK-NEXT: .short 1
; CHECK-NEXT: .byte 85
; CHECK-NEXT: .quad [[LABEL]]
; CHECK-NEXT: .quad [[CLOBBER]]
; CHECK-NEXT: .short 1
; CHECK-NEXT: .byte 83
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