; LLVM IR from kmilo17pet/qlibs :: qfp16 (qFP16_Polyval)

; 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: nounwind uwtable
declare dso_local i32 @qFP16_Add(i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @qFP16_Mul(i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @qFP16_Polyval(ptr noundef %0, i64 noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds i32, ptr %11, i64 0
  %13 = load i32, ptr %12, align 4, !tbaa !11
  store i32 %13, ptr %7, align 4, !tbaa !11
  store i64 1, ptr %8, align 8, !tbaa !9
  br label %14

14:                                               ; preds = %35, %3
  %15 = load i64, ptr %8, align 8, !tbaa !9
  %16 = load i64, ptr %5, align 8, !tbaa !9
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %18, label %38

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %19 = load i32, ptr %7, align 4, !tbaa !11
  %20 = load i32, ptr %6, align 4, !tbaa !11
  %21 = call i32 @qFP16_Mul(i32 noundef %19, i32 noundef %20)
  store i32 %21, ptr %9, align 4, !tbaa !11
  %22 = load i32, ptr %9, align 4, !tbaa !11
  %23 = icmp eq i32 -2147483648, %22
  br i1 %23, label %24, label %25

24:                                               ; preds = %18
  store i32 -2147483648, ptr %7, align 4, !tbaa !11
  store i32 2, ptr %10, align 4
  br label %32

25:                                               ; preds = %18
  %26 = load i32, ptr %9, align 4, !tbaa !11
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i64, ptr %8, align 8, !tbaa !9
  %29 = getelementptr inbounds i32, ptr %27, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !11
  %31 = call i32 @qFP16_Add(i32 noundef %26, i32 noundef %30)
  store i32 %31, ptr %7, align 4, !tbaa !11
  store i32 0, ptr %10, align 4
  br label %32

32:                                               ; preds = %25, %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  %33 = load i32, ptr %10, align 4
  switch i32 %33, label %40 [
    i32 0, label %34
    i32 2, label %38
  ]

34:                                               ; preds = %32
  br label %35

35:                                               ; preds = %34
  %36 = load i64, ptr %8, align 8, !tbaa !9
  %37 = add i64 %36, 1
  store i64 %37, ptr %8, align 8, !tbaa !9
  br label %14, !llvm.loop !13

38:                                               ; preds = %32, %14
  %39 = load i32, ptr %7, align 4, !tbaa !11
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %39

40:                                               ; preds = %32
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nounwind uwtable
declare dso_local i32 @qFP16_Add(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @qFP16_Mul(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @qFP16_Polyval(ptr nocapture noundef readonly %0, i64 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %0, align 4, !tbaa !5
  %5 = icmp ugt i64 %1, 1
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %8
  %.01119 = phi i32 [ %11, %8 ], [ %4, %3 ]
  %.01218 = phi i64 [ %12, %8 ], [ 1, %3 ]
  %6 = tail call i32 @qFP16_Mul(i32 noundef %.01119, i32 noundef %2)
  %7 = icmp eq i32 %6, -2147483648
  br i1 %7, label %._crit_edge, label %8

8:                                                ; preds = %.lr.ph
  %9 = getelementptr inbounds i32, ptr %0, i64 %.01218
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = tail call i32 @qFP16_Add(i32 noundef %6, i32 noundef %10)
  %12 = add nuw i64 %.01218, 1
  %exitcond.not = icmp eq i64 %12, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %8, %.lr.ph, %3
  %.2 = phi i32 [ %4, %3 ], [ -2147483648, %.lr.ph ], [ %11, %8 ]
  ret i32 %.2
}

attributes #0 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass