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TheRock/compiler/amd-llvm/llvm/test/DebugInfo/ARM/selectiondag-deadcode.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

32 lines
1.8 KiB
LLVM

; RUN: llc -filetype=asm < %s | FileCheck %s
target triple = "thumbv7-apple-ios7.0.0"
%class.Matrix3.0.6.10 = type { [9 x float] }
define arm_aapcscc void @_Z9GetMatrixv(ptr noalias nocapture sret(%class.Matrix3.0.6.10) %agg.result) #0 !dbg !39 {
%fmul = fmul float undef, undef
%fadd = fadd float %fmul, %fmul
%fadd2 = fadd float %fadd, %fmul
%fcmp = fcmp oeq float %fadd2, 0.000000e+00
br i1 %fcmp, label %_ZN7Vector39NormalizeEv.exit, label %1
tail call arm_aapcscc void @_ZL4Sqrtd() #3
br label %_ZN7Vector39NormalizeEv.exit
_ZN7Vector39NormalizeEv.exit: ; preds = %1, %0
; rdar://problem/15094721.
;
; When this (partially) dead use gets eliminated (and thus the def
; of the vreg holding %agg.result) the dbg_value becomes dangling
; and SelectionDAGISel crashes. It should definitely not
; crash. Drop the dbg_value instead.
; CHECK-NOT: "matrix"
tail call void @llvm.dbg.declare(metadata ptr %agg.result, metadata !45, metadata !DIExpression())
%2 = getelementptr inbounds %class.Matrix3.0.6.10, ptr %agg.result, i32 0, i32 0, i32 8
ret void
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare arm_aapcscc void @_ZL4Sqrtd() #2
!4 = !DICompositeType(tag: DW_TAG_class_type, name: "Matrix3", line: 20, size: 288, align: 32, file: !5, identifier: "_ZTS7Matrix3")
!5 = !DIFile(filename: "test.ii", directory: "/Volumes/Data/radar/15094721")
!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)
!40 = !DIFile(filename: "test.ii", directory: "/Volumes/Data/radar/15094721")
!41 = !DISubroutineType(types: null)
!45 = !DILocalVariable(name: "matrix", line: 35, scope: !39, file: !40, type: !4)