; LLVM IR from google/uVkCompute :: uvkc/benchmark/data_type_util.ll (ZN4uvkc9benchmark4fp169fromFloatEf)

; 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"

%"class.uvkc::benchmark::fp16" = type { i16 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4uvkc9benchmark4fp169fromFloatEf(ptr noundef nonnull align 2 dereferenceable(2) %0, float noundef %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !9
  %9 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %10 = load float, ptr %4, align 4, !tbaa !9
  %11 = call noundef i32 @_ZN4uvkc9benchmarkL7bitcastIjfEET_T0_(float noundef %10)
  store i32 %11, ptr %5, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %12 = load i32, ptr %5, align 4, !tbaa !11
  %13 = and i32 %12, -2147483648
  %14 = lshr i32 %13, 31
  store i32 %14, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %15 = load i32, ptr %5, align 4, !tbaa !11
  %16 = and i32 %15, 2139095040
  %17 = lshr i32 %16, 23
  %18 = sub i32 %17, 127
  %19 = add i32 %18, 15
  store i32 %19, ptr %7, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %20 = load i32, ptr %5, align 4, !tbaa !11
  %21 = and i32 %20, 8388607
  store i32 %21, ptr %8, align 4, !tbaa !11
  %22 = load i32, ptr %7, align 4, !tbaa !11
  %23 = icmp sgt i32 %22, 31
  br i1 %23, label %24, label %25

24:                                               ; preds = %2
  store i32 31, ptr %7, align 4, !tbaa !11
  br label %25

25:                                               ; preds = %24, %2
  %26 = load i32, ptr %7, align 4, !tbaa !11
  %27 = icmp slt i32 %26, 0
  br i1 %27, label %28, label %29

28:                                               ; preds = %25
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %29

29:                                               ; preds = %28, %25
  %30 = load i32, ptr %6, align 4, !tbaa !11
  %31 = shl i32 %30, 15
  store i32 %31, ptr %6, align 4, !tbaa !11
  %32 = load i32, ptr %7, align 4, !tbaa !11
  %33 = shl i32 %32, 10
  store i32 %33, ptr %7, align 4, !tbaa !11
  %34 = load i32, ptr %8, align 4, !tbaa !11
  %35 = ashr i32 %34, 13
  store i32 %35, ptr %8, align 4, !tbaa !11
  %36 = load i32, ptr %6, align 4, !tbaa !11
  %37 = load i32, ptr %7, align 4, !tbaa !11
  %38 = or i32 %36, %37
  %39 = load i32, ptr %8, align 4, !tbaa !11
  %40 = or i32 %38, %39
  store i32 %40, ptr %5, align 4, !tbaa !11
  %41 = load i32, ptr %5, align 4, !tbaa !11
  %42 = trunc i32 %41 to i16
  %43 = getelementptr inbounds %"class.uvkc::benchmark::fp16", ptr %9, i32 0, i32 0
  store i16 %42, ptr %43, align 2, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef i32 @_ZN4uvkc9benchmarkL7bitcastIjfEET_T0_(float noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !15, i64 0}
!14 = !{!"_ZTSN4uvkc9benchmark4fp16E", !15, i64 0}
!15 = !{!"short", !7, i64 0}


; 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 nounwind uwtable
define dso_local void @_ZN4uvkc9benchmark4fp169fromFloatEf(ptr nocapture noundef nonnull writeonly align 2 dereferenceable(2) %0, float noundef %1) local_unnamed_addr #0 align 2 {
  %3 = tail call noundef i32 @_ZN4uvkc9benchmarkL7bitcastIjfEET_T0_(float noundef %1)
  %4 = lshr i32 %3, 23
  %5 = and i32 %4, 255
  %6 = tail call i32 @llvm.umin.i32(i32 %5, i32 143)
  %7 = tail call i32 @llvm.umax.i32(i32 %6, i32 112)
  %8 = lshr i32 %3, 16
  %9 = and i32 %8, 32768
  %spec.store.select1 = shl nuw nsw i32 %7, 10
  %10 = add nuw nsw i32 %spec.store.select1, 16384
  %11 = lshr i32 %3, 13
  %12 = and i32 %11, 1023
  %13 = or disjoint i32 %12, %9
  %14 = or i32 %13, %10
  %15 = trunc i32 %14 to i16
  store i16 %15, ptr %0, align 2, !tbaa !5
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef i32 @_ZN4uvkc9benchmarkL7bitcastIjfEET_T0_(float noundef) local_unnamed_addr #0

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umin.i32(i32, i32) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.umax.i32(i32, i32) #1

attributes #0 = { 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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, !7, i64 0}
!6 = !{!"_ZTSN4uvkc9benchmark4fp16E", !7, i64 0}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


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