; LLVM IR from banach-space/llvm-tutor :: inputs (input_for_fcmp_eq)

; 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"

; Function Attrs: nounwind uwtable
define dso_local double @sqrt_impl(double noundef %0, double noundef %1, double noundef %2) #0 {
  %4 = alloca double, align 8
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca double, align 8
  %9 = alloca i32, align 4
  store double %0, ptr %5, align 8, !tbaa !5
  store double %1, ptr %6, align 8, !tbaa !5
  store double %2, ptr %7, align 8, !tbaa !5
  %10 = load double, ptr %6, align 8, !tbaa !5
  %11 = load double, ptr %7, align 8, !tbaa !5
  %12 = fcmp oeq double %10, %11
  br i1 %12, label %13, label %15

13:                                               ; preds = %3
  %14 = load double, ptr %7, align 8, !tbaa !5
  store double %14, ptr %4, align 8
  br label %38

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %16 = load double, ptr %7, align 8, !tbaa !5
  %17 = load double, ptr %6, align 8, !tbaa !5
  %18 = fadd double %16, %17
  %19 = fadd double %18, 1.000000e+00
  %20 = fdiv double %19, 2.000000e+00
  store double %20, ptr %8, align 8, !tbaa !5
  %21 = load double, ptr %5, align 8, !tbaa !5
  %22 = load double, ptr %8, align 8, !tbaa !5
  %23 = fdiv double %21, %22
  %24 = load double, ptr %8, align 8, !tbaa !5
  %25 = fcmp olt double %23, %24
  br i1 %25, label %26, label %32

26:                                               ; preds = %15
  %27 = load double, ptr %5, align 8, !tbaa !5
  %28 = load double, ptr %7, align 8, !tbaa !5
  %29 = load double, ptr %8, align 8, !tbaa !5
  %30 = fsub double %29, 1.000000e+00
  %31 = call double @sqrt_impl(double noundef %27, double noundef %28, double noundef %30)
  store double %31, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %37

32:                                               ; preds = %15
  %33 = load double, ptr %5, align 8, !tbaa !5
  %34 = load double, ptr %8, align 8, !tbaa !5
  %35 = load double, ptr %6, align 8, !tbaa !5
  %36 = call double @sqrt_impl(double noundef %33, double noundef %34, double noundef %35)
  store double %36, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %37

37:                                               ; preds = %32, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %38

38:                                               ; preds = %37, %13
  %39 = load double, ptr %4, align 8
  ret double %39
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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"

; Function Attrs: nofree norecurse nosync nounwind memory(none) uwtable
define dso_local double @sqrt_impl(double noundef %0, double noundef %1, double noundef %2) local_unnamed_addr #0 {
  %4 = fcmp oeq double %1, %2
  br i1 %4, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.tr2123 = phi double [ %.tr21.be, %.lr.ph ], [ %2, %3 ]
  %.tr2022 = phi double [ %.tr20.be, %.lr.ph ], [ %1, %3 ]
  %5 = fadd double %.tr2022, %.tr2123
  %6 = fadd double %5, 1.000000e+00
  %7 = fmul double %6, 5.000000e-01
  %8 = fdiv double %0, %7
  %9 = fcmp olt double %8, %7
  %10 = fadd double %7, -1.000000e+00
  %.tr20.be = select i1 %9, double %.tr2123, double %7
  %.tr21.be = select i1 %9, double %10, double %.tr2022
  %11 = fcmp oeq double %.tr20.be, %.tr21.be
  br i1 %11, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %.lr.ph, %3
  %.tr21.lcssa = phi double [ %2, %3 ], [ %.tr21.be, %.lr.ph ]
  ret double %.tr21.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(none) 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" }

!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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass