; LLVM IR from kmilo17pet/qlibs :: qfp16 (qFP16_FPToInt)

; 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"

%struct.qFP16_Settings_t = type { i32, i32, i8, i8 }

@fp = external hidden global ptr, align 8

; 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
define dso_local i32 @qFP16_FPToInt(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = load ptr, ptr @fp, align 8, !tbaa !9
  %5 = getelementptr inbounds %struct.qFP16_Settings_t, ptr %4, i32 0, i32 2
  %6 = load i8, ptr %5, align 4, !tbaa !11
  %7 = zext i8 %6 to i32
  %8 = icmp eq i32 1, %7
  br i1 %8, label %9, label %21

9:                                                ; preds = %1
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp sge i32 %10, 0
  br i1 %11, label %12, label %16

12:                                               ; preds = %9
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = add nsw i32 %13, 32768
  %15 = sdiv i32 %14, 65536
  store i32 %15, ptr %3, align 4, !tbaa !5
  br label %20

16:                                               ; preds = %9
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sub nsw i32 %17, 32768
  %19 = sdiv i32 %18, 65536
  store i32 %19, ptr %3, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %16, %12
  br label %24

21:                                               ; preds = %1
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = lshr i32 %22, 16
  store i32 %23, ptr %3, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %21, %20
  %25 = load i32, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %25
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !7, i64 8}
!12 = !{!"", !6, i64 0, !6, i64 4, !7, i64 8, !7, i64 9}


; 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"

@fp = external hidden local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 -32768, 65536) i32 @qFP16_FPToInt(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr @fp, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %2, i64 8
  %4 = load i8, ptr %3, align 4, !tbaa !9
  %5 = icmp eq i8 %4, 1
  br i1 %5, label %6, label %13

6:                                                ; preds = %1
  %7 = icmp sgt i32 %0, -1
  br i1 %7, label %8, label %11

8:                                                ; preds = %6
  %9 = add nuw nsw i32 %0, 32768
  %10 = lshr i32 %9, 16
  br label %15

11:                                               ; preds = %6
  %.nonneg = sub i32 32768, %0
  %12 = lshr i32 %.nonneg, 16
  %.neg = sub nsw i32 0, %12
  br label %15

13:                                               ; preds = %1
  %14 = lshr i32 %0, 16
  br label %15

15:                                               ; preds = %8, %11, %13
  %.0 = phi i32 [ %10, %8 ], [ %.neg, %11 ], [ %14, %13 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !7, i64 8}
!10 = !{!"", !11, i64 0, !11, i64 4, !7, i64 8, !7, i64 9}
!11 = !{!"int", !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass