; LLVM IR from jingweizhanghuai/Morn :: src/math/morn_fit_LSM.ll (polycurve)

; 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 float @_polycurve(float noundef %0, ptr noundef %1) #2 {
  %3 = alloca float, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca float, align 4
  %7 = alloca float, align 4
  %8 = alloca i32, align 4
  store float %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %9 = load ptr, ptr %4, align 8, !tbaa !9
  %10 = getelementptr inbounds float, ptr %9, i64 0
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = fptosi float %11 to i32
  store i32 %12, ptr %5, align 4, !tbaa !11
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = getelementptr inbounds float, ptr %13, i64 1
  store ptr %14, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store float 1.000000e+00, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %15 = load ptr, ptr %4, align 8, !tbaa !9
  %16 = getelementptr inbounds float, ptr %15, i64 0
  %17 = load float, ptr %16, align 4, !tbaa !5
  store float %17, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 1, ptr %8, align 4, !tbaa !11
  br label %18

18:                                               ; preds = %35, %2
  %19 = load i32, ptr %8, align 4, !tbaa !11
  %20 = load i32, ptr %5, align 4, !tbaa !11
  %21 = icmp sle i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %38

23:                                               ; preds = %18
  %24 = load float, ptr %6, align 4, !tbaa !5
  %25 = load float, ptr %3, align 4, !tbaa !5
  %26 = fmul float %24, %25
  store float %26, ptr %6, align 4, !tbaa !5
  %27 = load ptr, ptr %4, align 8, !tbaa !9
  %28 = load i32, ptr %8, align 4, !tbaa !11
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds float, ptr %27, i64 %29
  %31 = load float, ptr %30, align 4, !tbaa !5
  %32 = load float, ptr %6, align 4, !tbaa !5
  %33 = load float, ptr %7, align 4, !tbaa !5
  %34 = call float @llvm.fmuladd.f32(float %31, float %32, float %33)
  store float %34, ptr %7, align 4, !tbaa !5
  br label %35

35:                                               ; preds = %23
  %36 = load i32, ptr %8, align 4, !tbaa !11
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %8, align 4, !tbaa !11
  br label %18, !llvm.loop !13

38:                                               ; preds = %22
  %39 = load float, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret float %39
}

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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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: read) uwtable
define dso_local float @_polycurve(float noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 {
  %3 = load float, ptr %1, align 4, !tbaa !5
  %4 = fptosi float %3 to i32
  %5 = getelementptr inbounds i8, ptr %1, i64 4
  %6 = load float, ptr %5, align 4, !tbaa !5
  %.not14 = icmp slt i32 %4, 1
  br i1 %.not14, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %7 = zext nneg i32 %4 to i64
  %xtraiter = and i64 %7, 3
  %8 = icmp ult i32 %4, 4
  br i1 %8, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %7, 2147483644
  %invariant.gep = getelementptr inbounds i8, ptr %5, i64 4
  %invariant.gep23 = getelementptr inbounds i8, ptr %5, i64 8
  %invariant.gep25 = getelementptr inbounds i8, ptr %5, i64 12
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi float [ poison, %.lr.ph.preheader ], [ %25, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %.01216.unr = phi float [ %6, %.lr.ph.preheader ], [ %25, %.lr.ph ]
  %.01315.unr = phi float [ 1.000000e+00, %.lr.ph.preheader ], [ %23, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.01216.epil = phi float [ %12, %.lr.ph.epil ], [ %.01216.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.01315.epil = phi float [ %9, %.lr.ph.epil ], [ %.01315.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %9 = fmul float %.01315.epil, %0
  %10 = getelementptr inbounds float, ptr %5, i64 %indvars.iv.epil
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = tail call float @llvm.fmuladd.f32(float %11, float %9, float %.01216.epil)
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !9

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %2
  %.012.lcssa = phi float [ %6, %2 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %12, %.lr.ph.epil ]
  ret float %.012.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 1, %.lr.ph.preheader.new ], [ %indvars.iv.next.3, %.lr.ph ]
  %.01216 = phi float [ %6, %.lr.ph.preheader.new ], [ %25, %.lr.ph ]
  %.01315 = phi float [ 1.000000e+00, %.lr.ph.preheader.new ], [ %23, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %13 = fmul float %.01315, %0
  %14 = getelementptr inbounds float, ptr %5, i64 %indvars.iv
  %15 = load float, ptr %14, align 4, !tbaa !5
  %16 = tail call float @llvm.fmuladd.f32(float %15, float %13, float %.01216)
  %17 = fmul float %13, %0
  %gep = getelementptr inbounds float, ptr %invariant.gep, i64 %indvars.iv
  %18 = load float, ptr %gep, align 4, !tbaa !5
  %19 = tail call float @llvm.fmuladd.f32(float %18, float %17, float %16)
  %20 = fmul float %17, %0
  %gep24 = getelementptr inbounds float, ptr %invariant.gep23, i64 %indvars.iv
  %21 = load float, ptr %gep24, align 4, !tbaa !5
  %22 = tail call float @llvm.fmuladd.f32(float %21, float %20, float %19)
  %23 = fmul float %20, %0
  %gep26 = getelementptr inbounds float, ptr %invariant.gep25, i64 %indvars.iv
  %24 = load float, ptr %gep26, align 4, !tbaa !5
  %25 = tail call float @llvm.fmuladd.f32(float %24, float %23, float %22)
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11
}

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


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass