; LLVM IR from tangjz/acm-icpc :: lydsy/3129.ll (Z3CRTii)

; 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"

@ans = external dso_local global i32, align 4
@mod = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z7mod_invii(i32 noundef, i32 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 uwtable
define dso_local void @_Z3CRTii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %6 = load i32, ptr @mod, align 4, !tbaa !5
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = call noundef i32 @_Z7mod_invii(i32 noundef %6, i32 noundef %7)
  %9 = sext i32 %8 to i64
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = load i32, ptr @ans, align 4, !tbaa !5
  %12 = sub nsw i32 %10, %11
  %13 = sext i32 %12 to i64
  %14 = mul nsw i64 %9, %13
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = srem i64 %14, %16
  %18 = trunc i64 %17 to i32
  store i32 %18, ptr %5, align 4, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = icmp slt i32 %19, 0
  br i1 %20, label %21, label %25

21:                                               ; preds = %2
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = add nsw i32 %23, %22
  store i32 %24, ptr %5, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %21, %2
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = load i32, ptr @mod, align 4, !tbaa !5
  %28 = mul nsw i32 %26, %27
  %29 = load i32, ptr @ans, align 4, !tbaa !5
  %30 = add nsw i32 %29, %28
  store i32 %30, ptr @ans, align 4, !tbaa !5
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = load i32, ptr @mod, align 4, !tbaa !5
  %33 = mul nsw i32 %32, %31
  store i32 %33, ptr @mod, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret void
}

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; 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"

@ans = external dso_local local_unnamed_addr global i32, align 4
@mod = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z7mod_invii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3CRTii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr @mod, align 4, !tbaa !5
  %4 = tail call noundef i32 @_Z7mod_invii(i32 noundef %3, i32 noundef %1)
  %5 = sext i32 %4 to i64
  %6 = load i32, ptr @ans, align 4, !tbaa !5
  %7 = sub nsw i32 %0, %6
  %8 = sext i32 %7 to i64
  %9 = mul nsw i64 %8, %5
  %10 = sext i32 %1 to i64
  %11 = srem i64 %9, %10
  %12 = trunc nsw i64 %11 to i32
  %13 = icmp slt i64 %11, 0
  %14 = select i1 %13, i32 %1, i32 0
  %spec.select = add nsw i32 %14, %12
  %15 = load i32, ptr @mod, align 4, !tbaa !5
  %16 = mul nsw i32 %spec.select, %15
  %17 = add nsw i32 %16, %6
  store i32 %17, ptr @ans, align 4, !tbaa !5
  %18 = mul nsw i32 %15, %1
  store i32 %18, ptr @mod, align 4, !tbaa !5
  ret void
}

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" }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass