; LLVM IR from lzyrapx/Competitive-Programming :: ACdream/1007（数学+快速幂）.ll (Z8BigMultixx)

; 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 nounwind uwtable
declare dso_local noundef i64 @_Z5Multixx(i64 noundef, i64 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: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z8BigMultixx(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %7 = load i64, ptr %4, align 8, !tbaa !5
  %8 = icmp eq i64 %7, 0
  br i1 %8, label %9, label %13

9:                                                ; preds = %2
  %10 = load i64, ptr %5, align 8, !tbaa !5
  %11 = icmp eq i64 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %9
  store i64 1, ptr %3, align 8
  br label %38

13:                                               ; preds = %9, %2
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = icmp eq i64 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %13
  store i64 0, ptr %3, align 8
  br label %38

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 1, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %29, %17
  %19 = load i64, ptr %5, align 8, !tbaa !5
  %20 = icmp ne i64 %19, 0
  br i1 %20, label %21, label %35

21:                                               ; preds = %18
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = and i64 %22, 1
  %24 = icmp ne i64 %23, 0
  br i1 %24, label %25, label %29

25:                                               ; preds = %21
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %6, align 8, !tbaa !5
  %28 = call noundef i64 @_Z5Multixx(i64 noundef %26, i64 noundef %27)
  store i64 %28, ptr %6, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %25, %21
  %30 = load i64, ptr %4, align 8, !tbaa !5
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = call noundef i64 @_Z5Multixx(i64 noundef %30, i64 noundef %31)
  store i64 %32, ptr %4, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = ashr i64 %33, 1
  store i64 %34, ptr %5, align 8, !tbaa !5
  br label %18, !llvm.loop !9

35:                                               ; preds = %18
  %36 = load i64, ptr %6, align 8, !tbaa !5
  %37 = srem i64 %36, 10000000007
  store i64 %37, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %38

38:                                               ; preds = %35, %16, %12
  %39 = load i64, ptr %3, align 8
  ret i64 %39
}

attributes #0 = { mustprogress 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 = !{!"long long", !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 nounwind uwtable
declare dso_local noundef i64 @_Z5Multixx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i64 -10000000006, 10000000007) i64 @_Z8BigMultixx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = or i64 %1, %0
  %or.cond = icmp eq i64 %3, 0
  br i1 %or.cond, label %._crit_edge, label %4

4:                                                ; preds = %2
  %5 = icmp eq i64 %0, 0
  br i1 %5, label %._crit_edge, label %.preheader

.preheader:                                       ; preds = %4
  %.not18 = icmp eq i64 %1, 0
  br i1 %.not18, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %9
  %.021 = phi i64 [ %.1, %9 ], [ 1, %.preheader ]
  %.01320 = phi i64 [ %11, %9 ], [ %1, %.preheader ]
  %.01419 = phi i64 [ %10, %9 ], [ %0, %.preheader ]
  %6 = and i64 %.01320, 1
  %.not17 = icmp eq i64 %6, 0
  br i1 %.not17, label %9, label %7

7:                                                ; preds = %.lr.ph
  %8 = tail call noundef i64 @_Z5Multixx(i64 noundef %.01419, i64 noundef %.021)
  br label %9

9:                                                ; preds = %7, %.lr.ph
  %.1 = phi i64 [ %8, %7 ], [ %.021, %.lr.ph ]
  %10 = tail call noundef i64 @_Z5Multixx(i64 noundef %.01419, i64 noundef %.01419)
  %11 = ashr i64 %.01320, 1
  %.not = icmp ult i64 %.01320, 2
  br i1 %.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !5

._crit_edge.loopexit:                             ; preds = %9
  %12 = srem i64 %.1, 10000000007
  br label %._crit_edge

._crit_edge:                                      ; preds = %.preheader, %._crit_edge.loopexit, %4, %2
  %.015 = phi i64 [ 1, %2 ], [ 0, %4 ], [ 1, %.preheader ], [ %12, %._crit_edge.loopexit ]
  ret i64 %.015
}

attributes #0 = { mustprogress 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" }

!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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass