; LLVM IR from VAR-solutions/Algorithms :: Numerical Methods/secant_method/C (bisection)

; 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"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [47 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [16 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local double @F(float noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca float, align 4
  %3 = alloca float, align 4
  %4 = alloca float, align 4
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #4
  store i32 1, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2)
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3)
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %14

14:                                               ; preds = %46, %0
  %15 = load float, ptr %2, align 4, !tbaa !9
  %16 = load float, ptr %3, align 4, !tbaa !9
  %17 = fadd float %15, %16
  %18 = fdiv float %17, 2.000000e+00
  store float %18, ptr %4, align 4, !tbaa !9
  %19 = load i32, ptr %1, align 4, !tbaa !5
  %20 = load float, ptr %2, align 4, !tbaa !9
  %21 = fpext float %20 to double
  %22 = load float, ptr %3, align 4, !tbaa !9
  %23 = fpext float %22 to double
  %24 = load float, ptr %4, align 4, !tbaa !9
  %25 = fpext float %24 to double
  %26 = load float, ptr %2, align 4, !tbaa !9
  %27 = call double @F(float noundef %26)
  %28 = load float, ptr %3, align 4, !tbaa !9
  %29 = call double @F(float noundef %28)
  %30 = load float, ptr %4, align 4, !tbaa !9
  %31 = call double @F(float noundef %30)
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %19, double noundef %21, double noundef %23, double noundef %25, double noundef %27, double noundef %29, double noundef %31)
  %33 = load float, ptr %2, align 4, !tbaa !9
  %34 = call double @F(float noundef %33)
  %35 = load float, ptr %4, align 4, !tbaa !9
  %36 = call double @F(float noundef %35)
  %37 = fmul double %34, %36
  %38 = fcmp olt double %37, 0.000000e+00
  br i1 %38, label %39, label %41

39:                                               ; preds = %14
  %40 = load float, ptr %4, align 4, !tbaa !9
  store float %40, ptr %3, align 4, !tbaa !9
  br label %43

41:                                               ; preds = %14
  %42 = load float, ptr %4, align 4, !tbaa !9
  store float %42, ptr %2, align 4, !tbaa !9
  br label %43

43:                                               ; preds = %41, %39
  %44 = load i32, ptr %1, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %1, align 4, !tbaa !5
  br label %46

46:                                               ; preds = %43
  %47 = load float, ptr %4, align 4, !tbaa !9
  %48 = call double @F(float noundef %47)
  %49 = call double @llvm.fabs.f64(double %48)
  %50 = fcmp ogt double %49, 1.000000e-03
  br i1 %50, label %14, label %51, !llvm.loop !11

51:                                               ; preds = %46
  %52 = load float, ptr %4, align 4, !tbaa !9
  %53 = fpext float %52 to double
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.5, double noundef %53)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #4
  ret void
}

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

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #3

; 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 = { "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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

@.str = external hidden unnamed_addr constant [25 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [47 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [16 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local double @F(float noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @main() local_unnamed_addr #0 {
  %1 = alloca float, align 4
  %2 = alloca float, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1)
  %5 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %7 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %8

8:                                                ; preds = %28, %0
  %.0 = phi i32 [ 1, %0 ], [ %29, %28 ]
  %9 = load float, ptr %1, align 4, !tbaa !5
  %10 = load float, ptr %2, align 4, !tbaa !5
  %11 = fadd float %9, %10
  %12 = fmul float %11, 5.000000e-01
  %13 = fpext float %9 to double
  %14 = fpext float %10 to double
  %15 = fpext float %12 to double
  %16 = call double @F(float noundef %9)
  %17 = load float, ptr %2, align 4, !tbaa !5
  %18 = call double @F(float noundef %17)
  %19 = call double @F(float noundef %12)
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %.0, double noundef %13, double noundef %14, double noundef %15, double noundef %16, double noundef %18, double noundef %19)
  %21 = load float, ptr %1, align 4, !tbaa !5
  %22 = call double @F(float noundef %21)
  %23 = call double @F(float noundef %12)
  %24 = fmul double %22, %23
  %25 = fcmp olt double %24, 0.000000e+00
  br i1 %25, label %26, label %27

26:                                               ; preds = %8
  store float %12, ptr %2, align 4, !tbaa !5
  br label %28

27:                                               ; preds = %8
  store float %12, ptr %1, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %27, %26
  %29 = add nuw nsw i32 %.0, 1
  %30 = call double @F(float noundef %12)
  %31 = call double @llvm.fabs.f64(double %30)
  %32 = fcmp ogt double %31, 1.000000e-03
  br i1 %32, label %8, label %33, !llvm.loop !9

33:                                               ; preds = %28
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5, double noundef %15)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret void
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #3

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 #3 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass