1; RUN: llc -filetype=asm < %s | FileCheck %s
2target triple = "thumbv7-apple-ios7.0.0"
3%class.Matrix3.0.6.10 = type { [9 x float] }
4define arm_aapcscc void @_Z9GetMatrixv(%class.Matrix3.0.6.10* noalias nocapture sret %agg.result) #0 {
5  br i1 fcmp oeq (float fadd (float fadd (float fmul (float undef, float undef), float fmul (float undef, float undef)), float fmul (float undef, float undef)), float 0.000000e+00), label %_ZN7Vector39NormalizeEv.exit, label %1
6  tail call arm_aapcscc void @_ZL4Sqrtd() #3
7  br label %_ZN7Vector39NormalizeEv.exit
8_ZN7Vector39NormalizeEv.exit:                     ; preds = %1, %0
9  ; rdar://problem/15094721.
10  ;
11  ; When this (partially) dead use gets eliminated (and thus the def
12  ; of the vreg holding %agg.result) the dbg_value becomes dangling
13  ; and SelectionDAGISel crashes.  It should definitely not
14  ; crash. Drop the dbg_value instead.
15  ; CHECK-NOT: "matrix"
16  tail call void @llvm.dbg.declare(metadata %class.Matrix3.0.6.10* %agg.result, metadata !45, metadata !{!"0x102"})
17  %2 = getelementptr inbounds %class.Matrix3.0.6.10* %agg.result, i32 0, i32 0, i32 8
18  ret void
19}
20declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
21declare arm_aapcscc void @_ZL4Sqrtd() #2
22!4 = !{!"0x2\00Matrix3\0020\00288\0032\000\000\000", !5, null, null, null, null, null, !"_ZTS7Matrix3"} ; [ DW_TAG_class_type ] [Matrix3] [line 20, size 288, align 32, offset 0] [def] [from ]
23!5 = !{!"test.ii", !"/Volumes/Data/radar/15094721"}
24!39 = !{!"0x2e\00GetMatrix\00GetMatrix\00_Z9GetMatrixv\0032\000\001\000\006\00256\001\0032", !5, !40, !41, null, void (%class.Matrix3.0.6.10*)* @_Z9GetMatrixv, null, null, null} ; [ DW_TAG_subprogram ] [line 32] [def] [GetMatrix]
25!40 = !{!"0x29", !5}         ; [ DW_TAG_file_type ] [/Volumes/Data/radar/15094721/test.ii]
26!41 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, null, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
27!45 = !{!"0x100\00matrix\0035\008192", !39, !40, !4} ; [ DW_TAG_auto_variable ] [matrix] [line 35]
28