; LLVM IR from kmilo17pet/qlibs :: qvfloat (qVFloat_LinSpace)

; 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

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

; Function Attrs: nounwind uwtable
define dso_local ptr @qVFloat_LinSpace(ptr noundef %0, float noundef %1, float noundef %2, i64 noundef %3) #2 {
  %5 = alloca ptr, align 8
  %6 = alloca float, align 4
  %7 = alloca float, align 4
  %8 = alloca i64, align 8
  %9 = alloca float, align 4
  %10 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store float %1, ptr %6, align 4, !tbaa !9
  store float %2, ptr %7, align 4, !tbaa !9
  store i64 %3, ptr %8, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %11 = load float, ptr %7, align 4, !tbaa !9
  %12 = load float, ptr %6, align 4, !tbaa !9
  %13 = fsub float %11, %12
  %14 = load i64, ptr %8, align 8, !tbaa !11
  %15 = sub i64 %14, 1
  %16 = uitofp i64 %15 to float
  %17 = fdiv float %13, %16
  store float %17, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !11
  br label %18

18:                                               ; preds = %31, %4
  %19 = load i64, ptr %10, align 8, !tbaa !11
  %20 = load i64, ptr %8, align 8, !tbaa !11
  %21 = icmp ult i64 %19, %20
  br i1 %21, label %22, label %34

22:                                               ; preds = %18
  %23 = load float, ptr %6, align 4, !tbaa !9
  %24 = load i64, ptr %10, align 8, !tbaa !11
  %25 = uitofp i64 %24 to float
  %26 = load float, ptr %9, align 4, !tbaa !9
  %27 = call float @llvm.fmuladd.f32(float %25, float %26, float %23)
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i64, ptr %10, align 8, !tbaa !11
  %30 = getelementptr inbounds float, ptr %28, i64 %29
  store float %27, ptr %30, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %22
  %32 = load i64, ptr %10, align 8, !tbaa !11
  %33 = add i64 %32, 1
  store i64 %33, ptr %10, align 8, !tbaa !11
  br label %18, !llvm.loop !13

34:                                               ; preds = %18
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret ptr %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #0

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: write) uwtable
define dso_local noundef ptr @qVFloat_LinSpace(ptr noundef returned writeonly %0, float noundef %1, float noundef %2, i64 noundef %3) local_unnamed_addr #1 {
  %5 = fsub float %2, %1
  %6 = add i64 %3, -1
  %7 = uitofp i64 %6 to float
  %8 = fdiv float %5, %7
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %4
  %min.iters.check = icmp ult i64 %3, 4
  br i1 %min.iters.check, label %.lr.ph.preheader14, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %3, -4
  %broadcast.splatinsert = insertelement <4 x float> poison, float %8, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert12 = insertelement <4 x float> poison, float %1, i64 0
  %broadcast.splat13 = shufflevector <4 x float> %broadcast.splatinsert12, <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 ]
  %vec.ind = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
  %9 = uitofp <4 x i64> %vec.ind to <4 x float>
  %10 = tail call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %9, <4 x float> %broadcast.splat, <4 x float> %broadcast.splat13)
  %11 = getelementptr inbounds float, ptr %0, i64 %index
  store <4 x float> %10, ptr %11, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %vec.ind.next = add <4 x i64> %vec.ind, <i64 4, i64 4, i64 4, i64 4>
  %12 = icmp eq i64 %index.next, %n.vec
  br i1 %12, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %3
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader14

.lr.ph.preheader14:                               ; preds = %middle.block, %.lr.ph.preheader
  %.011.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader14, %.lr.ph
  %.011 = phi i64 [ %16, %.lr.ph ], [ %.011.ph, %.lr.ph.preheader14 ]
  %13 = uitofp i64 %.011 to float
  %14 = tail call float @llvm.fmuladd.f32(float %13, float %8, float %1)
  %15 = getelementptr inbounds float, ptr %0, i64 %.011
  store float %14, ptr %15, align 4, !tbaa !5
  %16 = add nuw i64 %.011, 1
  %exitcond.not = icmp eq i64 %16, %3
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %4
  ret ptr %0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x float> @llvm.fmuladd.v4f32(<4 x float>, <4 x float>, <4 x float>) #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { nofree norecurse nosync nounwind memory(argmem: write) 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 = { 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, !6, i64 0}
!6 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


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