; LLVM IR from xirc/cp-algorithm :: atcoder/abc044/D/main.ll (Z1fll)

; 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 i64 @_Z1fll(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %6 = load i64, ptr %4, align 8, !tbaa !5
  %7 = icmp sle i64 %6, 1
  br i1 %7, label %8, label %9

8:                                                ; preds = %2
  store i64 0, ptr %3, align 8
  br label %25

9:                                                ; preds = %2
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = load i64, ptr %4, align 8, !tbaa !5
  %12 = icmp slt i64 %10, %11
  br i1 %12, label %13, label %15

13:                                               ; preds = %9
  %14 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %14, ptr %3, align 8
  br label %25

15:                                               ; preds = %9
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = load i64, ptr %5, align 8, !tbaa !5
  %18 = load i64, ptr %4, align 8, !tbaa !5
  %19 = sdiv i64 %17, %18
  %20 = call noundef i64 @_Z1fll(i64 noundef %16, i64 noundef %19)
  %21 = load i64, ptr %5, align 8, !tbaa !5
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = srem i64 %21, %22
  %24 = add nsw i64 %20, %23
  store i64 %24, ptr %3, align 8
  br label %25

25:                                               ; preds = %15, %13, %8
  %26 = load i64, ptr %3, align 8
  ret i64 %26
}

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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple 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 noundef i64 @_Z1fll(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i64 %0, 2
  br i1 %3, label %._crit_edge, label %.lr.ph.split

.lr.ph.split:                                     ; preds = %2
  %4 = icmp slt i64 %1, %0
  br i1 %4, label %._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %.lr.ph.split, %tailrecurse
  %accumulator.tr1322 = phi i64 [ %7, %tailrecurse ], [ 0, %.lr.ph.split ]
  %.tr121421 = phi i64 [ %5, %tailrecurse ], [ %1, %.lr.ph.split ]
  %5 = udiv i64 %.tr121421, %0
  %6 = urem i64 %.tr121421, %0
  %7 = add nuw nsw i64 %6, %accumulator.tr1322
  %8 = icmp slt i64 %5, %0
  br i1 %8, label %._crit_edge, label %tailrecurse

._crit_edge:                                      ; preds = %tailrecurse, %.lr.ph.split, %2
  %accumulator.tr.lcssa = phi i64 [ 0, %2 ], [ 0, %.lr.ph.split ], [ %7, %tailrecurse ]
  %.0 = phi i64 [ 0, %2 ], [ %1, %.lr.ph.split ], [ %5, %tailrecurse ]
  %accumulator.ret.tr = add nsw i64 %.0, %accumulator.tr.lcssa
  ret i64 %accumulator.ret.tr
}

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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass