; LLVM IR from freddiev4/dailyprogrammerchallenges :: Easy Challenges/Challenge 0079 Easy - Counting in steps/solutions (solution)

; 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 [7 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @step_count(float noundef, float noundef, i32 noundef) #0

; 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

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %8 = load ptr, ptr %5, align 8, !tbaa !9
  %9 = getelementptr inbounds ptr, ptr %8, i64 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = call float @strtof(ptr noundef %10, ptr noundef null) #4
  %12 = load ptr, ptr %5, align 8, !tbaa !9
  %13 = getelementptr inbounds ptr, ptr %12, i64 2
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = call float @strtof(ptr noundef %14, ptr noundef null) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !9
  %17 = getelementptr inbounds ptr, ptr %16, i64 3
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = call i64 @strtol(ptr noundef %18, ptr noundef null, i32 noundef 10) #4
  %20 = trunc i64 %19 to i32
  %21 = call ptr @step_count(float noundef %11, float noundef %15, i32 noundef %20)
  store ptr %21, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %39, %2
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = load ptr, ptr %5, align 8, !tbaa !9
  %26 = getelementptr inbounds ptr, ptr %25, i64 3
  %27 = load ptr, ptr %26, align 8, !tbaa !9
  %28 = call i64 @strtol(ptr noundef %27, ptr noundef null, i32 noundef 10) #4
  %29 = icmp slt i64 %24, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %42

31:                                               ; preds = %22
  %32 = load ptr, ptr %6, align 8, !tbaa !9
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds float, ptr %32, i64 %34
  %36 = load float, ptr %35, align 4, !tbaa !11
  %37 = fpext float %36 to double
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str, double noundef %37)
  br label %39

39:                                               ; preds = %31
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %7, align 4, !tbaa !5
  br label %22, !llvm.loop !13

42:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %43 = load i32, ptr %3, align 4
  ret i32 %43
}

; Function Attrs: nounwind
declare float @strtof(ptr noundef, ptr noundef) #2

; Function Attrs: nounwind
declare i64 @strtol(ptr noundef, ptr noundef, i32 noundef) #2

declare i32 @printf(ptr noundef, ...) #3

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 "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 = { "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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 [7 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @step_count(float noundef, float noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %1, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = tail call float @strtof(ptr nocapture noundef %4, ptr noundef null) #3
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = tail call float @strtof(ptr nocapture noundef %7, ptr noundef null) #3
  %9 = getelementptr inbounds i8, ptr %1, i64 24
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = tail call i64 @strtol(ptr nocapture noundef %10, ptr noundef null, i32 noundef 10) #3
  %12 = trunc i64 %11 to i32
  %13 = tail call ptr @step_count(float noundef %5, float noundef %8, i32 noundef %12)
  %14 = load ptr, ptr %9, align 8, !tbaa !5
  %15 = tail call i64 @strtol(ptr nocapture noundef %14, ptr noundef null, i32 noundef 10) #3
  %16 = icmp sgt i64 %15, 0
  br i1 %16, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret i32 0

.lr.ph:                                           ; preds = %2, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %2 ]
  %17 = getelementptr inbounds float, ptr %13, i64 %indvars.iv
  %18 = load float, ptr %17, align 4, !tbaa !9
  %19 = fpext float %18 to double
  %20 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, double noundef %19)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = tail call i64 @strtol(ptr nocapture noundef %21, ptr noundef null, i32 noundef 10) #3
  %23 = icmp sgt i64 %22, %indvars.iv.next
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress nofree nounwind willreturn
declare float @strtof(ptr noundef readonly, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn
declare i64 @strtol(ptr noundef readonly, ptr nocapture noundef, i32 noundef) local_unnamed_addr #1

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

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 nofree nounwind willreturn "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 = { 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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass