; LLVM IR from imteekay/algorithms :: competitive-programming/uri/just_in_time.ll (Z10menorPrimoi)

; 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: mustprogress uwtable
define dso_local noundef i32 @_Z10menorPrimoi(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %12, %1
  %5 = load i32, ptr %3, align 4, !tbaa !5
  %6 = icmp sge i32 %5, 2
  br i1 %6, label %7, label %15

7:                                                ; preds = %4
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = call noundef zeroext i1 @_Z7isPrimoi(i32 noundef %8)
  br i1 %9, label %10, label %12

10:                                               ; preds = %7
  %11 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %11, ptr %2, align 4
  br label %17

12:                                               ; preds = %7
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = add nsw i32 %13, -1
  store i32 %14, ptr %3, align 4, !tbaa !5
  br label %4, !llvm.loop !9

15:                                               ; preds = %4
  %16 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %16, ptr %2, align 4
  br label %17

17:                                               ; preds = %15, %10
  %18 = load i32, ptr %2, align 4
  ret i32 %18
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z7isPrimoi(i32 noundef) #0

attributes #0 = { mustprogress 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++ 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"

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z10menorPrimoi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp sgt i32 %0, 1
  br i1 %2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %4
  %.07 = phi i32 [ %5, %4 ], [ %0, %1 ]
  %3 = tail call noundef zeroext i1 @_Z7isPrimoi(i32 noundef %.07)
  br i1 %3, label %._crit_edge, label %4

4:                                                ; preds = %.lr.ph
  %5 = add nsw i32 %.07, -1
  %6 = icmp sgt i32 %.07, 2
  br i1 %6, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %4, %1
  %.0.lcssa = phi i32 [ %0, %1 ], [ 1, %4 ], [ %.07, %.lr.ph ]
  ret i32 %.0.lcssa
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z7isPrimoi(i32 noundef) local_unnamed_addr #0

attributes #0 = { mustprogress 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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