; LLVM IR from o0o0o0o0o0o0o/image-processing-from-scratch :: ImageMatting/Eigen/blas (double)

; 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.Eigen::Map.9" = type { %"class.Eigen::MapBase.base.19", [7 x i8] }
%"class.Eigen::MapBase.base.19" = type { %"class.Eigen::MapBase.base.18" }
%"class.Eigen::MapBase.base.18" = type <{ ptr, %"class.Eigen::internal::variable_if_dynamic", i8 }>
%"class.Eigen::internal::variable_if_dynamic" = type { i64 }
%"class.Eigen::Map.36" = type { %"class.Eigen::MapBase.base.46", %"class.Eigen::InnerStride" }
%"class.Eigen::MapBase.base.46" = type { %"class.Eigen::MapBase.base.45" }
%"class.Eigen::MapBase.base.45" = type <{ ptr, %"class.Eigen::internal::variable_if_dynamic", i8 }>
%"class.Eigen::InnerStride" = type { %"class.Eigen::Stride" }
%"class.Eigen::Stride" = type { [8 x i8], %"class.Eigen::internal::variable_if_dynamic" }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_6StrideILi0ELi0EEEEEPS3_i(ptr dead_on_unwind noalias writable sret(%"class.Eigen::Map.9") align 8, ptr noundef, i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_11InnerStrideILin1EEEEEPS3_ii(ptr dead_on_unwind noalias writable sret(%"class.Eigen::Map.36") align 8, ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #2

; Function Attrs: mustprogress uwtable
define dso_local double @dnrm2_(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca double, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca %"class.Eigen::Map.9", align 8
  %10 = alloca i32, align 4
  %11 = alloca %"class.Eigen::Map.36", align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = icmp sle i32 %13, 0
  br i1 %14, label %15, label %16

15:                                               ; preds = %3
  store double 0.000000e+00, ptr %4, align 8
  br label %35

16:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %17, ptr %8, align 8, !tbaa !5
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = load i32, ptr %18, align 4, !tbaa !9
  %20 = icmp eq i32 %19, 1
  br i1 %20, label %21, label %26

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 24, ptr %9) #4
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i32, ptr %23, align 4, !tbaa !9
  call void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_6StrideILi0ELi0EEEEEPS3_i(ptr dead_on_unwind writable sret(%"class.Eigen::Map.9") align 8 %9, ptr noundef %22, i32 noundef %24)
  %25 = call noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_6StrideILi0ELi0EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1) %9)
  store double %25, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 24, ptr %9) #4
  store i32 1, ptr %10, align 4
  br label %34

26:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 40, ptr %11) #4
  %27 = load ptr, ptr %8, align 8, !tbaa !5
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = call i32 @llvm.abs.i32(i32 %31, i1 true)
  call void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_11InnerStrideILin1EEEEEPS3_ii(ptr dead_on_unwind writable sret(%"class.Eigen::Map.36") align 8 %11, ptr noundef %27, i32 noundef %29, i32 noundef %32)
  %33 = call noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_11InnerStrideILin1EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1) %11)
  store double %33, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 40, ptr %11) #4
  store i32 1, ptr %10, align 4
  br label %34

34:                                               ; preds = %26, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  br label %35

35:                                               ; preds = %34, %15
  %36 = load double, ptr %4, align 8
  ret double %36
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_6StrideILi0ELi0EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1)) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_11InnerStrideILin1EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { inlinehint mustprogress 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 #4 = { nounwind }

!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}


; 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"

%"class.Eigen::Map.9" = type { %"class.Eigen::MapBase.base.19", [7 x i8] }
%"class.Eigen::MapBase.base.19" = type { %"class.Eigen::MapBase.base.18" }
%"class.Eigen::MapBase.base.18" = type <{ ptr, %"class.Eigen::internal::variable_if_dynamic", i8 }>
%"class.Eigen::internal::variable_if_dynamic" = type { i64 }
%"class.Eigen::Map.36" = type { %"class.Eigen::MapBase.base.46", %"class.Eigen::InnerStride" }
%"class.Eigen::MapBase.base.46" = type { %"class.Eigen::MapBase.base.45" }
%"class.Eigen::MapBase.base.45" = type <{ ptr, %"class.Eigen::internal::variable_if_dynamic", i8 }>
%"class.Eigen::InnerStride" = type { %"class.Eigen::Stride" }
%"class.Eigen::Stride" = type { [8 x i8], %"class.Eigen::internal::variable_if_dynamic" }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_6StrideILi0ELi0EEEEEPS3_i(ptr dead_on_unwind noalias writable sret(%"class.Eigen::Map.9") align 8, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_11InnerStrideILin1EEEEEPS3_ii(ptr dead_on_unwind noalias writable sret(%"class.Eigen::Map.36") align 8, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef double @dnrm2_(ptr nocapture noundef readonly %0, ptr noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #1 {
  %4 = alloca %"class.Eigen::Map.9", align 8
  %5 = alloca %"class.Eigen::Map.36", align 8
  %6 = load i32, ptr %0, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 1
  br i1 %7, label %16, label %8

8:                                                ; preds = %3
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %11, label %13

11:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #4
  call void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_6StrideILi0ELi0EEEEEPS3_i(ptr dead_on_unwind nonnull writable sret(%"class.Eigen::Map.9") align 8 %4, ptr noundef %1, i32 noundef %6)
  %12 = call noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_6StrideILi0ELi0EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1) %4)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #4
  br label %16

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %5) #4
  %14 = tail call i32 @llvm.abs.i32(i32 %9, i1 true)
  call void @_Z11make_vectorIdEN5Eigen3MapINS0_6MatrixIT_Lin1ELi1ELi0ELin1ELi1EEELi0ENS0_11InnerStrideILin1EEEEEPS3_ii(ptr dead_on_unwind nonnull writable sret(%"class.Eigen::Map.36") align 8 %5, ptr noundef %1, i32 noundef %6, i32 noundef %14)
  %15 = call noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_11InnerStrideILin1EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1) %5)
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #4
  br label %16

16:                                               ; preds = %11, %13, %3
  %.1 = phi double [ 0.000000e+00, %3 ], [ %12, %11 ], [ %15, %13 ]
  ret double %.1
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_6StrideILi0ELi0EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef double @_ZNK5Eigen10MatrixBaseINS_3MapINS_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS_11InnerStrideILin1EEEEEE10stableNormEv(ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 #2 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { inlinehint mustprogress 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 #4 = { nounwind }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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