; LLVM IR from tangjz/acm-icpc :: 51nod/1404.ll (Z7mod_invx)

; 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"

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [64 x i8], align 1
@__PRETTY_FUNCTION__._Z7mod_invx = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z7mod_mulxx(i64 noundef, i64 noundef) #0

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z7mod_invx(i64 noundef %0) #0 {
  %2 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = icmp sle i64 0, %3
  br i1 %4, label %5, label %8

5:                                                ; preds = %1
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp slt i64 %6, 9560518619
  br label %8

8:                                                ; preds = %5, %1
  %9 = phi i1 [ false, %1 ], [ %7, %5 ]
  br i1 %9, label %10, label %11

10:                                               ; preds = %8
  br label %13

11:                                               ; preds = %8
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 31, ptr noundef @__PRETTY_FUNCTION__._Z7mod_invx) #2
  unreachable

12:                                               ; No predecessors!
  br label %13

13:                                               ; preds = %12, %10
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = icmp sle i64 %14, 1
  br i1 %15, label %16, label %18

16:                                               ; preds = %13
  %17 = load i64, ptr %2, align 8, !tbaa !5
  br label %26

18:                                               ; preds = %13
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = sdiv i64 9560518619, %19
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = srem i64 9560518619, %21
  %23 = call noundef i64 @_Z7mod_invx(i64 noundef %22)
  %24 = call noundef i64 @_Z7mod_mulxx(i64 noundef %20, i64 noundef %23)
  %25 = sub nsw i64 9560518619, %24
  br label %26

26:                                               ; preds = %18, %16
  %27 = phi i64 [ %17, %16 ], [ %25, %18 ]
  ret i64 %27
}

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 = { noreturn nounwind "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 = { noreturn 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"}


; 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"

@.str = external hidden unnamed_addr constant [18 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [64 x i8], align 1
@__PRETTY_FUNCTION__._Z7mod_invx = external hidden unnamed_addr constant [15 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z7mod_mulxx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i64 -9223372027294257188, -9223372036854775808) i64 @_Z7mod_invx(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp ult i64 %0, 9560518619
  br i1 %2, label %4, label %3

3:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 31, ptr noundef nonnull @__PRETTY_FUNCTION__._Z7mod_invx) #2
  unreachable

4:                                                ; preds = %1
  %5 = icmp ult i64 %0, 2
  br i1 %5, label %common.ret6, label %6

common.ret6:                                      ; preds = %4, %6
  %common.ret6.op = phi i64 [ %11, %6 ], [ %0, %4 ]
  ret i64 %common.ret6.op

6:                                                ; preds = %4
  %7 = udiv i64 9560518619, %0
  %8 = urem i64 9560518619, %0
  %9 = tail call noundef i64 @_Z7mod_invx(i64 noundef %8)
  %10 = tail call noundef i64 @_Z7mod_mulxx(i64 noundef %7, i64 noundef %9)
  %11 = sub nsw i64 9560518619, %10
  br label %common.ret6
}

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 = { noreturn nounwind "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 = { noreturn 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)"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass