; LLVM IR from dpt/Containers :: libraries/utils (primes)

; 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"

@primes = external hidden constant [12 x i32], align 16

; Function Attrs: nounwind uwtable
define dso_local i32 @prime_nearest(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = 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 0, ptr %4, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %22, %1
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 12
  br i1 %8, label %9, label %25

9:                                                ; preds = %6
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [12 x i32], ptr @primes, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = icmp sge i32 %13, %14
  br i1 %15, label %16, label %21

16:                                               ; preds = %9
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [12 x i32], ptr @primes, i64 0, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  store i32 %20, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %31

21:                                               ; preds = %9
  br label %22

22:                                               ; preds = %21
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %4, align 4, !tbaa !5
  br label %6, !llvm.loop !9

25:                                               ; preds = %6
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sub nsw i32 %26, 1
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [12 x i32], ptr @primes, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !5
  store i32 %30, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %31

31:                                               ; preds = %25, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %32 = load i32, ptr %2, align 4
  ret i32 %32
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@primes = external hidden local_unnamed_addr constant [12 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local i32 @prime_nearest(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @primes, align 16, !tbaa !5
  %.not = icmp slt i32 %2, %0
  br i1 %.not, label %3, label %.loopexit

3:                                                ; preds = %1
  %4 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 4), align 4, !tbaa !5
  %.not.1 = icmp slt i32 %4, %0
  br i1 %.not.1, label %5, label %.loopexit

5:                                                ; preds = %3
  %6 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 8), align 8, !tbaa !5
  %.not.2 = icmp slt i32 %6, %0
  br i1 %.not.2, label %7, label %.loopexit

7:                                                ; preds = %5
  %8 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 12), align 4, !tbaa !5
  %.not.3 = icmp slt i32 %8, %0
  br i1 %.not.3, label %9, label %.loopexit

9:                                                ; preds = %7
  %10 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 16), align 16, !tbaa !5
  %.not.4 = icmp slt i32 %10, %0
  br i1 %.not.4, label %11, label %.loopexit

11:                                               ; preds = %9
  %12 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 20), align 4, !tbaa !5
  %.not.5 = icmp slt i32 %12, %0
  br i1 %.not.5, label %13, label %.loopexit

13:                                               ; preds = %11
  %14 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 24), align 8, !tbaa !5
  %.not.6 = icmp slt i32 %14, %0
  br i1 %.not.6, label %15, label %.loopexit

15:                                               ; preds = %13
  %16 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 28), align 4, !tbaa !5
  %.not.7 = icmp slt i32 %16, %0
  br i1 %.not.7, label %17, label %.loopexit

17:                                               ; preds = %15
  %18 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 32), align 16, !tbaa !5
  %.not.8 = icmp slt i32 %18, %0
  br i1 %.not.8, label %19, label %.loopexit

19:                                               ; preds = %17
  %20 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 36), align 4, !tbaa !5
  %.not.9 = icmp slt i32 %20, %0
  br i1 %.not.9, label %21, label %.loopexit

21:                                               ; preds = %19
  %22 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 40), align 8, !tbaa !5
  %.not.10 = icmp slt i32 %22, %0
  %23 = load i32, ptr getelementptr inbounds (i8, ptr @primes, i64 44), align 4
  %spec.select = select i1 %.not.10, i32 %23, i32 %22
  br label %.loopexit

.loopexit:                                        ; preds = %21, %1, %3, %5, %7, %9, %11, %13, %15, %17, %19
  %.07 = phi i32 [ %2, %1 ], [ %4, %3 ], [ %6, %5 ], [ %8, %7 ], [ %10, %9 ], [ %12, %11 ], [ %14, %13 ], [ %16, %15 ], [ %18, %17 ], [ %20, %19 ], [ %spec.select, %21 ]
  ret i32 %.07
}

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" }

!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"}


; Effective O3 passes: ADCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass