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e240cc0b4b
frontends to use a DIExpression with a DW_OP_deref instead. This is not only a much more natural place for this informationl; there is also a technical reason: The FlagIndirectVariable is used to mark a variable that is turned into a reference by virtue of the calling convention; this happens for example to aggregate return values. The inliner, for example, may actually need to undo this indirection to correctly represent the value in its new context. This is impossible to implement because the DIVariable can't be safely modified. We can however safely construct a new DIExpression on the fly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226476 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
2.0 KiB
LLVM
28 lines
2.0 KiB
LLVM
; RUN: llc -filetype=asm < %s | FileCheck %s
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target triple = "thumbv7-apple-ios7.0.0"
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%class.Matrix3.0.6.10 = type { [9 x float] }
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define arm_aapcscc void @_Z9GetMatrixv(%class.Matrix3.0.6.10* noalias nocapture sret %agg.result) #0 {
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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
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tail call arm_aapcscc void @_ZL4Sqrtd() #3
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br label %_ZN7Vector39NormalizeEv.exit
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_ZN7Vector39NormalizeEv.exit: ; preds = %1, %0
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; rdar://problem/15094721.
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;
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; When this (partially) dead use gets eliminated (and thus the def
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; of the vreg holding %agg.result) the dbg_value becomes dangling
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; and SelectionDAGISel crashes. It should definitely not
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; crash. Drop the dbg_value instead.
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; CHECK-NOT: "matrix"
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tail call void @llvm.dbg.declare(metadata %class.Matrix3.0.6.10* %agg.result, metadata !45, metadata !{!"0x102\006"})
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%2 = getelementptr inbounds %class.Matrix3.0.6.10* %agg.result, i32 0, i32 0, i32 8
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ret void
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare arm_aapcscc void @_ZL4Sqrtd() #2
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!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 ]
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!5 = !{!"test.ii", !"/Volumes/Data/radar/15094721"}
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!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]
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!40 = !{!"0x29", !5} ; [ DW_TAG_file_type ] [/Volumes/Data/radar/15094721/test.ii]
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!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 ]
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!45 = !{!"0x100\00matrix\0035\000", !39, !40, !4} ; [ DW_TAG_auto_variable ] [matrix] [line 35]
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