; LLVM IR from ESPboy-edu/ESPboy_tinyphysicsengine :: programs (hello)

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @TPE_atan(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = mul nsw i32 %7, %8
  store i32 %9, ptr %5, align 4, !tbaa !5
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %15

12:                                               ; preds = %1
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = mul nsw i32 %13, -1
  store i32 %14, ptr %3, align 4, !tbaa !5
  store i32 -1, ptr %4, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %12, %1
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = icmp sgt i32 %16, 30000
  br i1 %17, label %18, label %21

18:                                               ; preds = %15
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = mul nsw i32 %19, 128
  store i32 %20, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %35

21:                                               ; preds = %15
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = load i32, ptr %3, align 4, !tbaa !5
  %24 = mul nsw i32 307, %23
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = add nsw i32 %24, %25
  %27 = mul nsw i32 %22, %26
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = mul nsw i32 633, %28
  %30 = add nsw i32 267026, %29
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = add nsw i32 %30, %31
  %33 = sdiv i32 %32, 128
  %34 = sdiv i32 %27, %33
  store i32 %34, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %35

35:                                               ; preds = %21, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %36 = load i32, ptr %2, align 4
  ret i32 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"int", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local i32 @TPE_atan(i32 noundef %0) local_unnamed_addr #0 {
  %spec.select = tail call i32 @llvm.abs.i32(i32 %0, i1 true)
  %.inv = icmp sgt i32 %0, -1
  %spec.select15 = select i1 %.inv, i32 1, i32 -1
  %2 = icmp ugt i32 %spec.select, 30000
  br i1 %2, label %3, label %5

3:                                                ; preds = %1
  %4 = shl nsw i32 %spec.select15, 7
  br label %15

5:                                                ; preds = %1
  %6 = mul nsw i32 %0, %0
  %7 = mul nuw nsw i32 %spec.select, 307
  %8 = add nuw nsw i32 %7, %6
  %9 = mul nsw i32 %8, %spec.select15
  %10 = mul nuw nsw i32 %spec.select, 633
  %11 = add nuw nsw i32 %6, 267026
  %12 = add nuw nsw i32 %11, %10
  %13 = lshr i32 %12, 7
  %14 = sdiv i32 %9, %13
  br label %15

15:                                               ; preds = %5, %3
  %.0 = phi i32 [ %4, %3 ], [ %14, %5 ]
  ret i32 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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" }
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)"}


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