; LLVM IR from sp-nitech/SPTK :: src/conversion (line_spectral_pairs_to_linear_predictive_coefficients)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients" = type <{ ptr, i32, i32, i32, i8, [3 x i8] }>

@_ZTVN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE = external dso_local unnamed_addr constant { [4 x ptr] }, align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsC2Ei(ptr noundef nonnull align 8 dereferenceable(21) %0, i32 noundef %1) unnamed_addr #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8
  store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTVN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE, i32 0, i32 0, i32 2), ptr %5, align 8, !tbaa !11
  %6 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %7, ptr %6, align 8, !tbaa !13
  %8 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 2
  %9 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 1
  %10 = load i32, ptr %9, align 8, !tbaa !13
  %11 = sitofp i32 %10 to double
  %12 = fmul double %11, 5.000000e-01
  %13 = call double @llvm.ceil.f64(double %12)
  %14 = fptosi double %13 to i32
  store i32 %14, ptr %8, align 4, !tbaa !16
  %15 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 3
  %16 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 1
  %17 = load i32, ptr %16, align 8, !tbaa !13
  %18 = sitofp i32 %17 to double
  %19 = fmul double %18, 5.000000e-01
  %20 = call double @llvm.floor.f64(double %19)
  %21 = fptosi double %20 to i32
  store i32 %21, ptr %15, align 8, !tbaa !17
  %22 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 4
  store i8 1, ptr %22, align 4, !tbaa !18
  %23 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 1
  %24 = load i32, ptr %23, align 8, !tbaa !13
  %25 = icmp slt i32 %24, 0
  br i1 %25, label %26, label %28

26:                                               ; preds = %2
  %27 = getelementptr inbounds %"class.sptk::LineSpectralPairsToLinearPredictiveCoefficients", ptr %5, i32 0, i32 4
  store i8 0, ptr %27, align 4, !tbaa !18
  br label %28

28:                                               ; preds = %26, %2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.ceil.f64(double) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.floor.f64(double) #1

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"vtable pointer", !8, i64 0}
!13 = !{!14, !10, i64 8}
!14 = !{!"_ZTSN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE", !10, i64 8, !10, i64 12, !10, i64 16, !15, i64 20}
!15 = !{!"bool", !7, i64 0}
!16 = !{!14, !10, i64 12}
!17 = !{!14, !10, i64 16}
!18 = !{!14, !15, i64 20}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@_ZTVN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE = external dso_local unnamed_addr constant { [4 x ptr] }, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @_ZN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsC2Ei(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(21) %0, i32 noundef %1) unnamed_addr #0 align 2 {
  store ptr getelementptr inbounds inrange(-16, 16) (i8, ptr @_ZTVN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE, i64 16), ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 %1, ptr %3, align 8, !tbaa !8
  %4 = getelementptr inbounds i8, ptr %0, i64 12
  %5 = sitofp i32 %1 to double
  %6 = fmul double %5, 5.000000e-01
  %7 = tail call double @llvm.ceil.f64(double %6)
  %8 = tail call double @llvm.floor.f64(double %6)
  %9 = insertelement <2 x double> poison, double %7, i64 0
  %10 = insertelement <2 x double> %9, double %8, i64 1
  %11 = fptosi <2 x double> %10 to <2 x i32>
  store <2 x i32> %11, ptr %4, align 4, !tbaa !13
  %12 = getelementptr inbounds i8, ptr %0, i64 20
  %13 = icmp sgt i32 %1, -1
  %spec.store.select = zext i1 %13 to i8
  store i8 %spec.store.select, ptr %12, align 4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.ceil.f64(double) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.floor.f64(double) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !10, i64 8}
!9 = !{!"_ZTSN4sptk47LineSpectralPairsToLinearPredictiveCoefficientsE", !10, i64 8, !10, i64 12, !10, i64 16, !12, i64 20}
!10 = !{!"int", !11, i64 0}
!11 = !{!"omnipotent char", !7, i64 0}
!12 = !{!"bool", !11, i64 0}
!13 = !{!10, !10, i64 0}


; Effective O3 passes: EarlyCSEPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass