; LLVM IR from gem5/gem5 :: ext/systemc/src/sysc/datatypes/int/sc_nbutils.ll (ZN5sc_dt13vec_mul_smallEiPKjjPj)

; 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 void @_ZN5sc_dt13vec_mul_smallEiPKjjPj(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #2 {
  %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 i32, align 4
  %11 = alloca i32, align 4
  %12 = 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) #3
  %13 = load ptr, ptr %6, 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 %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %21, %4
  %18 = load ptr, ptr %6, align 8, !tbaa !9
  %19 = load ptr, ptr %9, align 8, !tbaa !9
  %20 = icmp ult ptr %18, %19
  br i1 %20, label %21, label %51

21:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds i32, ptr %22, i32 1
  store ptr %23, ptr %6, align 8, !tbaa !9
  %24 = load i32, ptr %22, align 4, !tbaa !5
  store i32 %24, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = load i32, ptr %11, align 4, !tbaa !5
  %27 = call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %26)
  %28 = mul i32 %25, %27
  %29 = load i32, ptr %10, align 4, !tbaa !5
  %30 = call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %29)
  %31 = add i32 %28, %30
  store i32 %31, ptr %12, align 4, !tbaa !5
  %32 = load i32, ptr %7, align 4, !tbaa !5
  %33 = load i32, ptr %11, align 4, !tbaa !5
  %34 = call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %33)
  %35 = mul i32 %32, %34
  %36 = load i32, ptr %12, align 4, !tbaa !5
  %37 = call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %36)
  %38 = add i32 %35, %37
  %39 = load i32, ptr %10, align 4, !tbaa !5
  %40 = call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %39)
  %41 = add i32 %38, %40
  store i32 %41, ptr %10, align 4, !tbaa !5
  %42 = load i32, ptr %10, align 4, !tbaa !5
  %43 = call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %42)
  %44 = load i32, ptr %12, align 4, !tbaa !5
  %45 = call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %44)
  %46 = call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %43, i32 noundef %45)
  %47 = load ptr, ptr %8, align 8, !tbaa !9
  %48 = getelementptr inbounds i32, ptr %47, i32 1
  store ptr %48, ptr %8, align 8, !tbaa !9
  store i32 %46, ptr %47, align 4, !tbaa !5
  %49 = load i32, ptr %10, align 4, !tbaa !5
  %50 = call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %49)
  store i32 %50, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %17, !llvm.loop !11

51:                                               ; preds = %17
  %52 = load i32, ptr %10, align 4, !tbaa !5
  %53 = load ptr, ptr %8, align 8, !tbaa !9
  store i32 %52, ptr %53, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  ret void
}

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 void @_ZN5sc_dt13vec_mul_smallEiPKjjPj(i32 noundef %0, ptr noundef readonly %1, i32 noundef %2, ptr nocapture noundef writeonly %3) local_unnamed_addr #1 {
  %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
  %.021 = phi ptr [ %8, %.lr.ph ], [ %1, %4 ]
  %.01720 = phi ptr [ %23, %.lr.ph ], [ %3, %4 ]
  %.01819 = phi i32 [ %24, %.lr.ph ], [ 0, %4 ]
  %8 = getelementptr inbounds i8, ptr %.021, i64 4
  %9 = load i32, ptr %.021, align 4, !tbaa !5
  %10 = tail call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %9)
  %11 = mul i32 %10, %2
  %12 = tail call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %.01819)
  %13 = add i32 %11, %12
  %14 = tail call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %9)
  %15 = mul i32 %14, %2
  %16 = tail call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %13)
  %17 = add i32 %15, %16
  %18 = tail call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %.01819)
  %19 = add i32 %17, %18
  %20 = tail call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %19)
  %21 = tail call noundef i32 @_ZN5sc_dt8low_halfEj(i32 noundef %13)
  %22 = tail call noundef i32 @_ZN5sc_dt6concatEjj(i32 noundef %20, i32 noundef %21)
  %23 = getelementptr inbounds i8, ptr %.01720, i64 4
  store i32 %22, ptr %.01720, align 4, !tbaa !5
  %24 = tail call noundef i32 @_ZN5sc_dt9high_halfEj(i32 noundef %19)
  %25 = icmp ult ptr %8, %6
  br i1 %25, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %4
  %.018.lcssa = phi i32 [ 0, %4 ], [ %24, %.lr.ph ]
  %.017.lcssa = phi ptr [ %3, %4 ], [ %23, %.lr.ph ]
  store i32 %.018.lcssa, ptr %.017.lcssa, align 4, !tbaa !5
  ret void
}

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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass