1 files changed, 63 insertions, 0 deletions
diff --git a/test/DebugInfo/X86/dbg-value-range.ll b/test/DebugInfo/X86/dbg-value-range.ll
new file mode 100644
index 0000000000000..d9e7a63826272
--- /dev/null
+++ b/test/DebugInfo/X86/dbg-value-range.ll
@@ -0,0 +1,63 @@
+; 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}
+!llvm.module.flags = !{!24}
+
+!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, null, i32 256, i1 true, i32 (%struct.a*)* @bar, null, null, metadata !21, i32 0} ; [ DW_TAG_subprogram ] [line 5] [def] [scope 0] [bar]
+!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, null, metadata !4, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!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, null, metadata !9, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [a] [line 1, size 32, align 32, offset 0] [def] [from ]
+!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
+!24 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}