; LLVM IR from gem5/gem5 :: ext/systemc/src/sysc/datatypes/int/sc_nbutils.ll (ZN5sc_dt16vec_rem_on_smallEiPjj)

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN5sc_dt16vec_rem_on_smallEiPjj(i32 noundef %0, ptr noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %11 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %11, ptr %8, align 8, !tbaa !9
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = load ptr, ptr %5, align 8, !tbaa !9
  %14 = sext i32 %12 to i64
  %15 = getelementptr inbounds i32, ptr %13, i64 %14
  store ptr %15, ptr %5, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %20, %3
  %17 = load ptr, ptr %8, align 8, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = icmp ult ptr %17, %18
  br i1 %19, label %20, label %46

20:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %21 = load ptr, ptr %5, align 8, !tbaa !9
  %22 = getelementptr inbounds i32, ptr %21, i32 -1
  store ptr %22, ptr %5, align 8, !tbaa !9
  %23 = load i32, ptr %22, align 4, !tbaa !5
  store i32 %23, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %24 = load i32, ptr %7, align 4, !tbaa !5
  %25 = load i32, ptr %9, align 4, !tbaa !5
  %26 = call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %25)
  %27 = call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %24, i32 noundef %26)
  store i32 %27, ptr %10, align 4, !tbaa !5
  %28 = load i32, ptr %10, align 4, !tbaa !5
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = udiv i32 %28, %29
  store i32 %30, ptr %7, align 4, !tbaa !5
  %31 = load i32, ptr %10, align 4, !tbaa !5
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = urem i32 %31, %32
  %34 = load i32, ptr %9, align 4, !tbaa !5
  %35 = call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %34)
  %36 = call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %33, i32 noundef %35)
  store i32 %36, ptr %10, align 4, !tbaa !5
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = load i32, ptr %10, align 4, !tbaa !5
  %39 = load i32, ptr %6, align 4, !tbaa !5
  %40 = udiv i32 %38, %39
  %41 = call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %37, i32 noundef %40)
  %42 = load ptr, ptr %5, align 8, !tbaa !9
  store i32 %41, ptr %42, align 4, !tbaa !5
  %43 = load i32, ptr %10, align 4, !tbaa !5
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = urem i32 %43, %44
  store i32 %45, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %16, !llvm.loop !11

46:                                               ; preds = %16
  %47 = load i32, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %47
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 = { 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 #3 = { 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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN5sc_dt16vec_rem_on_smallEiPjj(i32 noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = icmp sgt i32 %0, 0
  br i1 %4, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %5 = zext nneg i32 %0 to i64
  %6 = getelementptr inbounds i32, ptr %1, i64 %5
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.021 = phi ptr [ %7, %.lr.ph ], [ %6, %.lr.ph.preheader ]
  %.01920 = phi i32 [ %17, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %7 = getelementptr inbounds i8, ptr %.021, i64 -4
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = tail call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %8)
  %10 = tail call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %.01920, i32 noundef %9)
  %11 = udiv i32 %10, %2
  %12 = urem i32 %10, %2
  %13 = tail call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %8)
  %14 = tail call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %12, i32 noundef %13)
  %15 = udiv i32 %14, %2
  %16 = tail call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %11, i32 noundef %15)
  store i32 %16, ptr %7, align 4, !tbaa !5
  %17 = urem i32 %14, %2
  %18 = icmp ugt ptr %7, %1
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.019.lcssa = phi i32 [ 0, %3 ], [ %17, %.lr.ph ]
  ret i32 %.019.lcssa
}

attributes #0 = { inlinehint 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 = { 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"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass