llvm-mirror/test/DebugInfo/X86/dbg-value-range.ll

; RUN: llc -mtriple=x86_64-apple-darwin10 < %s | FileCheck %s

%struct.a = type { i32 }

define i32 @bar(%struct.a* nocapture %b) nounwind ssp {
entry:
  tail call void @llvm.dbg.value(metadata !{%struct.a* %b}, i64 0, metadata !6), !dbg !13
  %tmp1 = getelementptr inbounds %struct.a* %b, i64 0, i32 0, !dbg !14
  %tmp2 = load i32* %tmp1, align 4, !dbg !14
  tail call void @llvm.dbg.value(metadata !{i32 %tmp2}, i64 0, metadata !11), !dbg !14
  %call = tail call i32 (...)* @foo(i32 %tmp2) nounwind , !dbg !18
  %add = add nsw i32 %tmp2, 1, !dbg !19
  ret i32 %add, !dbg !19
}

declare i32 @foo(...) 

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

!llvm.dbg.cu = !{!2}

!0 = metadata !{i32 786478, metadata !22, metadata !1, metadata !"bar", metadata !"bar", metadata !"", i32 5, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, i32 (%struct.a*)* @bar, null, null, metadata !21, i32 0} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 786473, metadata !22} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 786449, metadata !22, i32 12, metadata !"clang version 2.9 (trunk 122997)", i1 true, metadata !"", i32 0, metadata !23, metadata !23, metadata !20, null,  null, null} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 786453, metadata !22, metadata !1, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
!4 = metadata !{metadata !5}
!5 = metadata !{i32 786468, null, metadata !2, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!6 = metadata !{i32 786689, metadata !0, metadata !"b", metadata !1, i32 5, metadata !7, i32 0, null} ; [ DW_TAG_arg_variable ]
!7 = metadata !{i32 786447, null, metadata !2, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !8} ; [ DW_TAG_pointer_type ]
!8 = metadata !{i32 786451, metadata !22, metadata !2, metadata !"a", i32 1, i64 32, i64 32, i32 0, i32 0, i32 0, metadata !9, i32 0, i32 0} ; [ DW_TAG_structure_type ]
!9 = metadata !{metadata !10}
!10 = metadata !{i32 786445, metadata !22, metadata !1, metadata !"c", i32 2, i64 32, i64 32, i64 0, i32 0, metadata !5} ; [ DW_TAG_member ]
!11 = metadata !{i32 786688, metadata !12, metadata !"x", metadata !1, i32 6, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!12 = metadata !{i32 786443, metadata !22, metadata !0, i32 5, i32 22, i32 0} ; [ DW_TAG_lexical_block ]
!13 = metadata !{i32 5, i32 19, metadata !0, null}
!14 = metadata !{i32 6, i32 14, metadata !12, null}
!18 = metadata !{i32 7, i32 2, metadata !12, null}
!19 = metadata !{i32 8, i32 2, metadata !12, null}
!20 = metadata !{metadata !0}
!21 = metadata !{metadata !6, metadata !11}
!22 = metadata !{metadata !"bar.c", metadata !"/private/tmp"}
!23 = metadata !{i32 0}

; Check that variable bar:b value range is appropriately truncated in debug info.
; The variable is in %rdi which is clobbered by 'movl %ebx, %edi'
; Here Ltmp7 is the end of the location range.

;CHECK: .loc	1 7 2
;CHECK: movl
;CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]]

;CHECK:Ldebug_loc0:
;CHECK-NEXT:	.quad
;CHECK-NEXT:	.quad	[[CLOBBER]]
;CHECK-NEXT: Lset{{.*}} = Ltmp{{.*}}-Ltmp{{.*}}
;CHECK-NEXT:    .short  Lset
;CHECK-NEXT: Ltmp
;CHECK-NEXT:	.byte	85 ## DW_OP_reg
;CHECK-NEXT: Ltmp
;CHECK-NEXT:	.quad	0
;CHECK-NEXT:	.quad	0