; LLVM IR from gem5/gem5 :: ext/systemc/src/sysc/datatypes/int/sc_nbutils.ll (ZN5sc_dt11vec_add_on2EiPjiPKj)

; 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: mustprogress nounwind uwtable
define dso_local void @_ZN5sc_dt11vec_add_on2EiPjiPKj(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %12 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %12, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %13 = load ptr, ptr %9, align 8, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %13, i64 %15
  store ptr %16, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 0, ptr %11, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %21, %4
  %18 = load ptr, ptr %9, align 8, !tbaa !9
  %19 = load ptr, ptr %10, align 8, !tbaa !9
  %20 = icmp ult ptr %18, %19
  br i1 %20, label %21, label %38

21:                                               ; preds = %17
  %22 = load ptr, ptr %9, align 8, !tbaa !9
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = load ptr, ptr %8, align 8, !tbaa !9
  %25 = getelementptr inbounds i32, ptr %24, i32 1
  store ptr %25, ptr %8, align 8, !tbaa !9
  %26 = load i32, ptr %24, align 4, !tbaa !5
  %27 = add i32 %23, %26
  %28 = load i32, ptr %11, align 4, !tbaa !5
  %29 = add i32 %28, %27
  store i32 %29, ptr %11, align 4, !tbaa !5
  %30 = load i32, ptr %11, align 4, !tbaa !5
  %31 = zext i32 %30 to i64
  %32 = and i64 %31, 1073741823
  %33 = trunc i64 %32 to i32
  %34 = load ptr, ptr %9, align 8, !tbaa !9
  %35 = getelementptr inbounds i32, ptr %34, i32 1
  store ptr %35, ptr %9, align 8, !tbaa !9
  store i32 %33, ptr %34, align 4, !tbaa !5
  %36 = load i32, ptr %11, align 4, !tbaa !5
  %37 = lshr i32 %36, 30
  store i32 %37, ptr %11, align 4, !tbaa !5
  br label %17, !llvm.loop !11

38:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
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"}
!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: mustprogress nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN5sc_dt11vec_add_on2EiPjiPKj(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr nocapture noundef readonly %3) local_unnamed_addr #0 {
  %5 = sext i32 %0 to i64
  %6 = getelementptr inbounds i32, ptr %1, i64 %5
  %7 = icmp sgt i32 %0, 0
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %4, %.lr.ph
  %.014 = phi i32 [ %15, %.lr.ph ], [ 0, %4 ]
  %.01013 = phi ptr [ %9, %.lr.ph ], [ %3, %4 ]
  %.01112 = phi ptr [ %14, %.lr.ph ], [ %1, %4 ]
  %8 = load i32, ptr %.01112, align 4, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %.01013, i64 4
  %10 = load i32, ptr %.01013, align 4, !tbaa !5
  %11 = add i32 %8, %.014
  %12 = add i32 %11, %10
  %13 = and i32 %12, 1073741823
  %14 = getelementptr inbounds i8, ptr %.01112, i64 4
  store i32 %13, ptr %.01112, align 4, !tbaa !5
  %15 = lshr i32 %12, 30
  %16 = icmp ult ptr %14, %6
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %4
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: 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 = !{!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: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass