; LLVM IR from PaddlePaddle/Paddle-Lite :: lite/backends/opencl/cl_half.ll (ZN6paddle4lite10Half2FloatEt)

; 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"

@_ZN6paddle4liteL13mantissatableE = external hidden constant [2048 x i32], align 16
@_ZN6paddle4liteL11offsettableE = external hidden constant [64 x i16], align 16
@_ZN6paddle4liteL13exponenttableE = external hidden constant [64 x i32], align 16

; 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: mustprogress nounwind uwtable
define dso_local noundef float @_ZN6paddle4lite10Half2FloatEt(i16 noundef zeroext %0) #1 {
  %2 = alloca i16, align 2
  %3 = alloca i32, align 4
  store i16 %0, ptr %2, align 2, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = load i16, ptr %2, align 2, !tbaa !5
  %5 = zext i16 %4 to i32
  %6 = ashr i32 %5, 10
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [64 x i16], ptr @_ZN6paddle4liteL11offsettableE, i64 0, i64 %7
  %9 = load i16, ptr %8, align 2, !tbaa !5
  %10 = zext i16 %9 to i32
  %11 = load i16, ptr %2, align 2, !tbaa !5
  %12 = zext i16 %11 to i32
  %13 = and i32 %12, 1023
  %14 = add nsw i32 %10, %13
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [2048 x i32], ptr @_ZN6paddle4liteL13mantissatableE, i64 0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load i16, ptr %2, align 2, !tbaa !5
  %19 = zext i16 %18 to i32
  %20 = ashr i32 %19, 10
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [64 x i32], ptr @_ZN6paddle4liteL13exponenttableE, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = add i32 %17, %23
  store i32 %24, ptr %3, align 4, !tbaa !9
  %25 = load float, ptr %3, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret float %25
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
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 = !{!"short", !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 = !{!"float", !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"

@_ZN6paddle4liteL13mantissatableE = external hidden local_unnamed_addr constant [2048 x i32], align 16
@_ZN6paddle4liteL11offsettableE = external hidden local_unnamed_addr constant [64 x i16], align 16
@_ZN6paddle4liteL13exponenttableE = external hidden local_unnamed_addr constant [64 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef float @_ZN6paddle4lite10Half2FloatEt(i16 noundef zeroext %0) local_unnamed_addr #0 {
  %2 = zext i16 %0 to i32
  %3 = lshr i32 %2, 10
  %4 = zext nneg i32 %3 to i64
  %5 = getelementptr inbounds [64 x i16], ptr @_ZN6paddle4liteL11offsettableE, i64 0, i64 %4
  %6 = load i16, ptr %5, align 2, !tbaa !5
  %7 = zext i16 %6 to i32
  %8 = and i32 %2, 1023
  %9 = add nuw nsw i32 %8, %7
  %10 = zext nneg i32 %9 to i64
  %11 = getelementptr inbounds [2048 x i32], ptr @_ZN6paddle4liteL13mantissatableE, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = getelementptr inbounds [64 x i32], ptr @_ZN6paddle4liteL13exponenttableE, i64 0, i64 %4
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = add i32 %14, %12
  %16 = bitcast i32 %15 to float
  ret float %16
}

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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


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