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1; RUN: llc -filetype=asm < %s | FileCheck %s2target triple = "thumbv7-apple-ios7.0.0"3%class.Matrix3.0.6.10 = type { [9 x float] }4define arm_aapcscc void @_Z9GetMatrixv(ptr noalias nocapture sret(%class.Matrix3.0.6.10) %agg.result) #0 !dbg !39 {5 %fmul = fmul float undef, undef6 %fadd = fadd float %fmul, %fmul7 %fadd2 = fadd float %fadd, %fmul8 %fcmp = fcmp oeq float %fadd2, 0.000000e+009 br i1 %fcmp, label %_ZN7Vector39NormalizeEv.exit, label %110 tail call arm_aapcscc void @_ZL4Sqrtd() #311 br label %_ZN7Vector39NormalizeEv.exit12_ZN7Vector39NormalizeEv.exit: ; preds = %1, %013 ; rdar://problem/15094721.14 ;15 ; When this (partially) dead use gets eliminated (and thus the def16 ; of the vreg holding %agg.result) the dbg_value becomes dangling17 ; and SelectionDAGISel crashes. It should definitely not18 ; crash. Drop the dbg_value instead.19 ; CHECK-NOT: "matrix"20 tail call void @llvm.dbg.declare(metadata ptr %agg.result, metadata !45, metadata !DIExpression())21 %2 = getelementptr inbounds %class.Matrix3.0.6.10, ptr %agg.result, i32 0, i32 0, i32 822 ret void23}24declare void @llvm.dbg.declare(metadata, metadata, metadata) #125declare arm_aapcscc void @_ZL4Sqrtd() #226!4 = !DICompositeType(tag: DW_TAG_class_type, name: "Matrix3", line: 20, size: 288, align: 32, file: !5, identifier: "_ZTS7Matrix3")27!5 = !DIFile(filename: "test.ii", directory: "/Volumes/Data/radar/15094721")28!39 = distinct !DISubprogram(name: "GetMatrix", linkageName: "_Z9GetMatrixv", line: 32, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 32, file: !5, scope: !40, type: !41)29!40 = !DIFile(filename: "test.ii", directory: "/Volumes/Data/radar/15094721")30!41 = !DISubroutineType(types: null)31!45 = !DILocalVariable(name: "matrix", line: 35, scope: !39, file: !40, type: !4)32