; LLVM IR from amritansh22/Data-Structures-and-Algorithms-in-cpp :: remainder-without-modulo.ll (Z3modii)

; 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 i32 @_Z3modii(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 %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %8, label %11

8:                                                ; preds = %2
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = sub nsw i32 0, %9
  store i32 %10, ptr %4, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %8, %2
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = icmp slt i32 %12, 0
  br i1 %13, label %14, label %17

14:                                               ; preds = %11
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = sub nsw i32 0, %15
  store i32 %16, ptr %5, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %14, %11
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %17
  %22 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %22, ptr %3, align 4
  br label %34

23:                                               ; preds = %17
  br label %24

24:                                               ; preds = %28, %23
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = icmp sge i32 %25, %26
  br i1 %27, label %28, label %32

28:                                               ; preds = %24
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = sub nsw i32 %30, %29
  store i32 %31, ptr %4, align 4, !tbaa !5
  br label %24, !llvm.loop !9

32:                                               ; preds = %24
  %33 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %33, ptr %3, align 4
  br label %34

34:                                               ; preds = %32, %21
  %35 = load i32, ptr %3, align 4
  ret i32 %35
}

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" }

!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"}
!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 range(i32 -2147483647, 2147483647) i32 @_Z3modii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %spec.select = tail call i32 @llvm.abs.i32(i32 %0, i1 true)
  %.0 = tail call i32 @llvm.abs.i32(i32 %1, i1 true)
  %3 = icmp ult i32 %spec.select, %.0
  br i1 %3, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2, %.preheader
  %.1 = phi i32 [ %4, %.preheader ], [ %spec.select, %2 ]
  %.not = icmp slt i32 %.1, %.0
  %4 = sub nsw i32 %.1, %.0
  br i1 %.not, label %.loopexit, label %.preheader, !llvm.loop !5

.loopexit:                                        ; preds = %.preheader, %2
  %.014 = phi i32 [ %spec.select, %2 ], [ %.1, %.preheader ]
  ret i32 %.014
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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,IPSCCPPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass