; LLVM IR from sbu-fsl/kernel-ml :: src/math (math)

; 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: nounwind uwtable
define dso_local float @fast_sqrt_f(float noundef %0) #0 {
  %2 = alloca float, align 4
  %3 = alloca float, align 4
  %4 = alloca i32, align 4
  store float %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %5 = load i32, ptr %2, align 4, !tbaa !9
  store i32 %5, ptr %4, align 4, !tbaa !9
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = ashr i32 %6, 1
  %8 = sub nsw i32 1597463007, %7
  store i32 %8, ptr %4, align 4, !tbaa !9
  %9 = load float, ptr %4, align 4, !tbaa !5
  store float %9, ptr %3, align 4, !tbaa !5
  %10 = load float, ptr %3, align 4, !tbaa !5
  %11 = load float, ptr %2, align 4, !tbaa !5
  %12 = fmul float 5.000000e-01, %11
  %13 = load float, ptr %3, align 4, !tbaa !5
  %14 = fmul float %12, %13
  %15 = load float, ptr %3, align 4, !tbaa !5
  %16 = fneg float %14
  %17 = call float @llvm.fmuladd.f32(float %16, float %15, float 1.500000e+00)
  %18 = fmul float %10, %17
  store float %18, ptr %3, align 4, !tbaa !5
  %19 = load float, ptr %3, align 4, !tbaa !5
  %20 = load float, ptr %2, align 4, !tbaa !5
  %21 = fmul float 5.000000e-01, %20
  %22 = load float, ptr %3, align 4, !tbaa !5
  %23 = fmul float %21, %22
  %24 = load float, ptr %3, align 4, !tbaa !5
  %25 = fneg float %23
  %26 = call float @llvm.fmuladd.f32(float %25, float %24, float 1.500000e+00)
  %27 = fmul float %19, %26
  store float %27, ptr %3, align 4, !tbaa !5
  %28 = load float, ptr %3, align 4, !tbaa !5
  %29 = load float, ptr %2, align 4, !tbaa !5
  %30 = fmul float 5.000000e-01, %29
  %31 = load float, ptr %3, align 4, !tbaa !5
  %32 = fmul float %30, %31
  %33 = load float, ptr %3, align 4, !tbaa !5
  %34 = fneg float %32
  %35 = call float @llvm.fmuladd.f32(float %34, float %33, float 1.500000e+00)
  %36 = fmul float %28, %35
  store float %36, ptr %3, align 4, !tbaa !5
  %37 = load float, ptr %3, align 4, !tbaa !5
  %38 = load float, ptr %2, align 4, !tbaa !5
  %39 = fmul float %37, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret float %39
}

; 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 speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #2

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

attributes #0 = { 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local float @fast_sqrt_f(float noundef %0) local_unnamed_addr #0 {
  %2 = bitcast float %0 to i32
  %3 = ashr i32 %2, 1
  %4 = sub nsw i32 1597463007, %3
  %5 = bitcast i32 %4 to float
  %6 = fmul float %0, -5.000000e-01
  %7 = fmul float %6, %5
  %8 = tail call float @llvm.fmuladd.f32(float %7, float %5, float 1.500000e+00)
  %9 = fmul float %8, %5
  %10 = fmul float %6, %9
  %11 = tail call float @llvm.fmuladd.f32(float %10, float %9, float 1.500000e+00)
  %12 = fmul float %9, %11
  %13 = fmul float %6, %12
  %14 = tail call float @llvm.fmuladd.f32(float %13, float %12, float 1.500000e+00)
  %15 = fmul float %12, %14
  %16 = fmul float %15, %0
  ret float %16
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

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" }
attributes #1 = { mustprogress 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)"}


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