; LLVM IR from libxsmm/libxsmm :: src (libxsmm_lpflt_quant)

; 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

declare float @libxsmm_sexp2_i8i(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @libxsmm_dequantize_i16(ptr noundef %0, ptr noundef %1, i32 noundef %2, i8 noundef zeroext %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i8, align 1
  %9 = alloca float, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i8 %3, ptr %8, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %11 = load i8, ptr %8, align 1, !tbaa !11
  %12 = zext i8 %11 to i32
  %13 = sub nsw i32 0, %12
  %14 = call float @libxsmm_sexp2_i8i(i32 noundef %13)
  store float %14, ptr %9, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %32, %4
  %16 = load i32, ptr %10, align 4, !tbaa !9
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = icmp slt i32 %16, %17
  br i1 %18, label %19, label %35

19:                                               ; preds = %15
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i32, ptr %10, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i16, ptr %20, i64 %22
  %24 = load i16, ptr %23, align 2, !tbaa !14
  %25 = sitofp i16 %24 to float
  %26 = load float, ptr %9, align 4, !tbaa !12
  %27 = fmul float %25, %26
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = load i32, ptr %10, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds float, ptr %28, i64 %30
  store float %27, ptr %31, align 4, !tbaa !12
  br label %32

32:                                               ; preds = %19
  %33 = load i32, ptr %10, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %10, align 4, !tbaa !9
  br label %15, !llvm.loop !16

35:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"float", !7, i64 0}
!14 = !{!15, !15, i64 0}
!15 = !{!"short", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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"

declare float @libxsmm_sexp2_i8i(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @libxsmm_dequantize_i16(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1, i32 noundef %2, i8 noundef zeroext %3) local_unnamed_addr #1 {
  %5 = zext i8 %3 to i32
  %6 = sub nsw i32 0, %5
  %7 = tail call float @libxsmm_sexp2_i8i(i32 noundef %6) #2
  %8 = icmp sgt i32 %2, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %wide.trip.count = zext nneg i32 %2 to i64
  %min.iters.check = icmp ult i32 %2, 8
  br i1 %min.iters.check, label %.lr.ph.preheader11, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  %broadcast.splatinsert = insertelement <4 x float> poison, float %7, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %9 = getelementptr inbounds i16, ptr %0, i64 %index
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  %wide.load = load <4 x i16>, ptr %9, align 2, !tbaa !5
  %wide.load10 = load <4 x i16>, ptr %10, align 2, !tbaa !5
  %11 = sitofp <4 x i16> %wide.load to <4 x float>
  %12 = sitofp <4 x i16> %wide.load10 to <4 x float>
  %13 = fmul <4 x float> %broadcast.splat, %11
  %14 = fmul <4 x float> %broadcast.splat, %12
  %15 = getelementptr inbounds float, ptr %1, i64 %index
  %16 = getelementptr inbounds i8, ptr %15, i64 16
  store <4 x float> %13, ptr %15, align 4, !tbaa !9
  store <4 x float> %14, ptr %16, align 4, !tbaa !9
  %index.next = add nuw i64 %index, 8
  %17 = icmp eq i64 %index.next, %n.vec
  br i1 %17, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader11

.lr.ph.preheader11:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader11, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader11 ]
  %18 = getelementptr inbounds i16, ptr %0, i64 %indvars.iv
  %19 = load i16, ptr %18, align 2, !tbaa !5
  %20 = sitofp i16 %19 to float
  %21 = fmul float %7, %20
  %22 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  store float %21, ptr %22, align 4, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %4
  ret void
}

attributes #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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12, !14, !13}


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