; LLVM IR from abeaumont/competitive-programming :: codechef/july18a/equilibr.ll (Z6modinvxx)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z6modinvxx(i64 noundef %0, i64 noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i32, align 4
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %12 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %12, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  store i64 0, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  store i64 1, ptr %10, align 8, !tbaa !5
  %13 = load i64, ptr %5, align 8, !tbaa !5
  %14 = icmp eq i64 %13, 1
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  store i64 1, ptr %3, align 8
  store i32 1, ptr %11, align 4
  br label %38

16:                                               ; preds = %2
  br label %17

17:                                               ; preds = %20, %16
  %18 = load i64, ptr %4, align 8, !tbaa !5
  %19 = icmp sgt i64 %18, 1
  br i1 %19, label %20, label %36

20:                                               ; preds = %17
  %21 = load i64, ptr %4, align 8, !tbaa !5
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = sdiv i64 %21, %22
  store i64 %23, ptr %8, align 8, !tbaa !5
  %24 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %24, ptr %7, align 8, !tbaa !5
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = load i64, ptr %5, align 8, !tbaa !5
  %27 = srem i64 %25, %26
  store i64 %27, ptr %5, align 8, !tbaa !5
  %28 = load i64, ptr %7, align 8, !tbaa !5
  store i64 %28, ptr %4, align 8, !tbaa !5
  %29 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %29, ptr %7, align 8, !tbaa !5
  %30 = load i64, ptr %10, align 8, !tbaa !5
  %31 = load i64, ptr %8, align 8, !tbaa !5
  %32 = load i64, ptr %9, align 8, !tbaa !5
  %33 = mul nsw i64 %31, %32
  %34 = sub nsw i64 %30, %33
  store i64 %34, ptr %9, align 8, !tbaa !5
  %35 = load i64, ptr %7, align 8, !tbaa !5
  store i64 %35, ptr %10, align 8, !tbaa !5
  br label %17, !llvm.loop !9

36:                                               ; preds = %17
  %37 = load i64, ptr %10, align 8, !tbaa !5
  store i64 %37, ptr %3, align 8
  store i32 1, ptr %11, align 4
  br label %38

38:                                               ; preds = %36, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %39 = load i64, ptr %3, align 8
  ret i64 %39
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i64 @_Z6modinvxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp ne i64 %1, 1
  %4 = icmp sgt i64 %0, 1
  %or.cond = and i1 %3, %4
  br i1 %or.cond, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.024 = phi i64 [ %.01623, %.lr.ph ], [ 1, %2 ]
  %.01623 = phi i64 [ %8, %.lr.ph ], [ 0, %2 ]
  %.01822 = phi i64 [ %.01921, %.lr.ph ], [ %0, %2 ]
  %.01921 = phi i64 [ %6, %.lr.ph ], [ %1, %2 ]
  %5 = sdiv i64 %.01822, %.01921
  %6 = srem i64 %.01822, %.01921
  %7 = mul nsw i64 %5, %.01623
  %8 = sub nsw i64 %.024, %7
  %9 = icmp sgt i64 %.01921, 1
  br i1 %9, label %.lr.ph, label %.loopexit, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %2
  %.017 = phi i64 [ 1, %2 ], [ %.01623, %.lr.ph ]
  ret i64 %.017
}

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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass