; LLVM IR from abeaumont/competitive-programming :: codechef/oct19a/jiit.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: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z6modinvxx(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
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  store i64 0, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  store i64 1, ptr %9, align 8, !tbaa !5
  %11 = load i64, ptr %5, align 8, !tbaa !5
  %12 = icmp eq i64 %11, 1
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i64 1, ptr %3, align 8
  store i32 1, ptr %10, align 4
  br label %44

14:                                               ; preds = %2
  br label %15

15:                                               ; preds = %18, %14
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = icmp sgt i64 %16, 1
  br i1 %17, label %18, label %34

18:                                               ; preds = %15
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr %5, align 8, !tbaa !5
  %21 = sdiv i64 %19, %20
  store i64 %21, ptr %7, align 8, !tbaa !5
  %22 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %22, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = load i64, ptr %5, align 8, !tbaa !5
  %25 = srem i64 %23, %24
  store i64 %25, ptr %5, align 8, !tbaa !5
  %26 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %26, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %27, ptr %6, align 8, !tbaa !5
  %28 = load i64, ptr %9, align 8, !tbaa !5
  %29 = load i64, ptr %7, align 8, !tbaa !5
  %30 = load i64, ptr %8, align 8, !tbaa !5
  %31 = mul nsw i64 %29, %30
  %32 = sub nsw i64 %28, %31
  store i64 %32, ptr %8, align 8, !tbaa !5
  %33 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %33, ptr %9, align 8, !tbaa !5
  br label %15, !llvm.loop !9

34:                                               ; preds = %15
  %35 = load i64, ptr %9, align 8, !tbaa !5
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = icmp slt i64 %35, %36
  br i1 %37, label %38, label %42

38:                                               ; preds = %34
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = load i64, ptr %9, align 8, !tbaa !5
  %41 = add nsw i64 %40, %39
  store i64 %41, ptr %9, align 8, !tbaa !5
  br label %42

42:                                               ; preds = %38, %34
  %43 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %43, ptr %3, align 8
  store i32 1, ptr %10, align 4
  br label %44

44:                                               ; preds = %42, %13
  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
  %45 = load i64, ptr %3, align 8
  ret i64 %45
}

; 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 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 eq i64 %1, 1
  br i1 %3, label %12, label %.preheader

.preheader:                                       ; preds = %2
  %4 = icmp sgt i64 %0, 1
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.027 = phi i64 [ %.01926, %.lr.ph ], [ 1, %.preheader ]
  %.01926 = phi i64 [ %8, %.lr.ph ], [ 0, %.preheader ]
  %.02125 = phi i64 [ %.02224, %.lr.ph ], [ %0, %.preheader ]
  %.02224 = phi i64 [ %6, %.lr.ph ], [ %1, %.preheader ]
  %5 = sdiv i64 %.02125, %.02224
  %6 = srem i64 %.02125, %.02224
  %7 = mul nsw i64 %5, %.01926
  %8 = sub nsw i64 %.027, %7
  %9 = icmp sgt i64 %.02224, 1
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  %.022.lcssa = phi i64 [ %1, %.preheader ], [ %6, %.lr.ph ]
  %.0.lcssa = phi i64 [ 1, %.preheader ], [ %.01926, %.lr.ph ]
  %10 = icmp slt i64 %.0.lcssa, %.022.lcssa
  %11 = select i1 %10, i64 %.022.lcssa, i64 0
  %spec.select = add nsw i64 %11, %.0.lcssa
  br label %12

12:                                               ; preds = %2, %._crit_edge
  %.020 = phi i64 [ %spec.select, %._crit_edge ], [ 1, %2 ]
  ret i64 %.020
}

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,ReassociatePass,SROAPass,SimplifyCFGPass