; LLVM IR from PaddlePaddle/Paddle-Lite :: lite/backends/opencl/cl_half.ll (ZN6paddle4lite10Float2HalfEf)

; 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"

@_ZN6paddle4liteL9basetableE = external hidden constant [512 x i16], align 16
@_ZN6paddle4liteL10shifttableE = external hidden constant [512 x i8], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i16 @_ZN6paddle4lite10Float2HalfEf(float noundef %0) #0 {
  %2 = alloca float, align 4
  %3 = alloca i32, align 4
  store float %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = load i32, ptr %2, align 4, !tbaa !9
  store i32 %4, ptr %3, align 4, !tbaa !9
  %5 = load i32, ptr %3, align 4, !tbaa !9
  %6 = lshr i32 %5, 23
  %7 = and i32 %6, 511
  %8 = zext i32 %7 to i64
  %9 = getelementptr inbounds [512 x i16], ptr @_ZN6paddle4liteL9basetableE, i64 0, i64 %8
  %10 = load i16, ptr %9, align 2, !tbaa !11
  %11 = zext i16 %10 to i32
  %12 = load i32, ptr %3, align 4, !tbaa !9
  %13 = and i32 %12, 8388607
  %14 = load i32, ptr %3, align 4, !tbaa !9
  %15 = lshr i32 %14, 23
  %16 = and i32 %15, 511
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds [512 x i8], ptr @_ZN6paddle4liteL10shifttableE, i64 0, i64 %17
  %19 = load i8, ptr %18, align 1, !tbaa !13
  %20 = zext i8 %19 to i32
  %21 = lshr i32 %13, %20
  %22 = add i32 %11, %21
  %23 = trunc i32 %22 to i16
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i16 %23
}

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 willreturn memory(argmem: readwrite) }
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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!7, !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"

@_ZN6paddle4liteL9basetableE = external hidden local_unnamed_addr constant [512 x i16], align 16
@_ZN6paddle4liteL10shifttableE = external hidden local_unnamed_addr constant [512 x i8], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef zeroext i16 @_ZN6paddle4lite10Float2HalfEf(float noundef %0) local_unnamed_addr #0 {
  %2 = bitcast float %0 to i32
  %3 = lshr i32 %2, 23
  %4 = zext nneg i32 %3 to i64
  %5 = getelementptr inbounds [512 x i16], ptr @_ZN6paddle4liteL9basetableE, i64 0, i64 %4
  %6 = load i16, ptr %5, align 2, !tbaa !5
  %7 = and i32 %2, 8388607
  %8 = getelementptr inbounds [512 x i8], ptr @_ZN6paddle4liteL10shifttableE, i64 0, i64 %4
  %9 = load i8, ptr %8, align 1, !tbaa !9
  %10 = zext nneg i8 %9 to i32
  %11 = lshr i32 %7, %10
  %12 = trunc i32 %11 to i16
  %13 = add i16 %6, %12
  ret i16 %13
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}


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