; LLVM IR from viveakrt/Competitive-programing :: CodeChef/CHEFORA_Chef vs Bharat.ll (Z8exponentxx)

; 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 @_Z8exponentxx(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 %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %33, %2
  %7 = load i64, ptr %4, align 8, !tbaa !5
  %8 = icmp ne i64 %7, 0
  br i1 %8, label %9, label %34

9:                                                ; preds = %6
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = srem i64 %10, 2
  %12 = icmp eq i64 %11, 0
  br i1 %12, label %13, label %24

13:                                               ; preds = %9
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = srem i64 %14, 1000000007
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = srem i64 %16, 1000000007
  %18 = mul nsw i64 %15, %17
  %19 = srem i64 %18, 1000000007
  store i64 %19, ptr %3, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = sdiv i64 %20, 2
  %22 = call noundef double @_ZSt5floorIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %21)
  %23 = fptosi double %22 to i64
  store i64 %23, ptr %4, align 8, !tbaa !5
  br label %33

24:                                               ; preds = %9
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = srem i64 %25, 1000000007
  %27 = load i64, ptr %3, align 8, !tbaa !5
  %28 = srem i64 %27, 1000000007
  %29 = mul nsw i64 %26, %28
  %30 = srem i64 %29, 1000000007
  store i64 %30, ptr %5, align 8, !tbaa !5
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = sub nsw i64 %31, 1
  store i64 %32, ptr %4, align 8, !tbaa !5
  br label %33

33:                                               ; preds = %24, %13
  br label %6, !llvm.loop !9

34:                                               ; preds = %6
  %35 = load i64, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret i64 %35
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt5floorIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 #3 = { 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
define dso_local noundef range(i64 -1000000006, 1000000007) i64 @_Z8exponentxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not13 = icmp eq i64 %1, 0
  br i1 %.not13, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %18
  %.016 = phi i64 [ %.1, %18 ], [ 1, %2 ]
  %.0915 = phi i64 [ %.110, %18 ], [ %1, %2 ]
  %.01114 = phi i64 [ %.112, %18 ], [ %0, %2 ]
  %3 = and i64 %.0915, 1
  %4 = icmp eq i64 %3, 0
  br i1 %4, label %5, label %12

5:                                                ; preds = %.lr.ph
  %6 = srem i64 %.01114, 1000000007
  %7 = mul nsw i64 %6, %6
  %8 = urem i64 %7, 1000000007
  %9 = ashr exact i64 %.0915, 1
  %10 = tail call noundef double @_ZSt5floorIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef %9)
  %11 = fptosi double %10 to i64
  br label %18

12:                                               ; preds = %.lr.ph
  %13 = srem i64 %.016, 1000000007
  %14 = srem i64 %.01114, 1000000007
  %15 = mul nsw i64 %13, %14
  %16 = srem i64 %15, 1000000007
  %17 = add nsw i64 %.0915, -1
  br label %18

18:                                               ; preds = %12, %5
  %.112 = phi i64 [ %8, %5 ], [ %.01114, %12 ]
  %.110 = phi i64 [ %11, %5 ], [ %17, %12 ]
  %.1 = phi i64 [ %.016, %5 ], [ %16, %12 ]
  %.not = icmp eq i64 %.110, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %18, %2
  %.0.lcssa = phi i64 [ 1, %2 ], [ %.1, %18 ]
  ret i64 %.0.lcssa
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt5floorIxEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i64 noundef) local_unnamed_addr #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 = { inlinehint 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,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass