; LLVM IR from xirc/cp-algorithm :: spoj/pon/main.ll (Z3powmmm)

; 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
define dso_local noundef i64 @_Z3powmmm(i64 noundef %0, i64 noundef %1, i64 noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 1, ptr %7, align 8, !tbaa !5
  %8 = load i64, ptr %6, align 8, !tbaa !5
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = urem i64 %9, %8
  store i64 %10, ptr %4, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %28, %3
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = icmp ne i64 %12, 0
  br i1 %13, label %14, label %40

14:                                               ; preds = %11
  %15 = load i64, ptr %5, align 8, !tbaa !5
  %16 = and i64 %15, 1
  %17 = icmp ne i64 %16, 0
  br i1 %17, label %18, label %28

18:                                               ; preds = %14
  %19 = load i64, ptr %7, align 8, !tbaa !5
  %20 = zext i64 %19 to i128
  %21 = load i64, ptr %4, align 8, !tbaa !5
  %22 = zext i64 %21 to i128
  %23 = mul nsw i128 %20, %22
  %24 = load i64, ptr %6, align 8, !tbaa !5
  %25 = zext i64 %24 to i128
  %26 = srem i128 %23, %25
  %27 = trunc i128 %26 to i64
  store i64 %27, ptr %7, align 8, !tbaa !5
  br label %28

28:                                               ; preds = %18, %14
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = zext i64 %29 to i128
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = zext i64 %31 to i128
  %33 = mul nsw i128 %30, %32
  %34 = load i64, ptr %6, align 8, !tbaa !5
  %35 = zext i64 %34 to i128
  %36 = srem i128 %33, %35
  %37 = trunc i128 %36 to i64
  store i64 %37, ptr %4, align 8, !tbaa !5
  %38 = load i64, ptr %5, align 8, !tbaa !5
  %39 = lshr i64 %38, 1
  store i64 %39, ptr %5, align 8, !tbaa !5
  br label %11, !llvm.loop !9

40:                                               ; preds = %11
  %41 = load i64, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret i64 %41
}

; 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 = { 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", !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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef range(i64 0, -1) i64 @_Z3powmmm(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not15 = icmp eq i64 %1, 0
  br i1 %.not15, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = urem i64 %0, %2
  %5 = zext i64 %2 to i128
  br label %6

6:                                                ; preds = %.lr.ph, %14
  %.018 = phi i64 [ 1, %.lr.ph ], [ %.1, %14 ]
  %.01217 = phi i64 [ %4, %.lr.ph ], [ %17, %14 ]
  %.01316 = phi i64 [ %1, %.lr.ph ], [ %18, %14 ]
  %7 = and i64 %.01316, 1
  %.not14 = icmp eq i64 %7, 0
  br i1 %.not14, label %._crit_edge19, label %8

._crit_edge19:                                    ; preds = %6
  %.pre = zext i64 %.01217 to i128
  br label %14

8:                                                ; preds = %6
  %9 = zext i64 %.018 to i128
  %10 = zext i64 %.01217 to i128
  %11 = mul nuw nsw i128 %9, %10
  %12 = urem i128 %11, %5
  %13 = trunc nuw i128 %12 to i64
  br label %14

14:                                               ; preds = %._crit_edge19, %8
  %.pre-phi = phi i128 [ %.pre, %._crit_edge19 ], [ %10, %8 ]
  %.1 = phi i64 [ %.018, %._crit_edge19 ], [ %13, %8 ]
  %15 = mul nuw nsw i128 %.pre-phi, %.pre-phi
  %16 = urem i128 %15, %5
  %17 = trunc nuw i128 %16 to i64
  %18 = lshr i64 %.01316, 1
  %.not = icmp ult i64 %.01316, 2
  br i1 %.not, label %._crit_edge, label %6, !llvm.loop !5

._crit_edge:                                      ; preds = %14, %3
  %.0.lcssa = phi i64 [ 1, %3 ], [ %.1, %14 ]
  ret i64 %.0.lcssa
}

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


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