; LLVM IR from alenic/realGA :: tests/test_stat.ll (ZN8StatTest17uniformChiSquaredEPiii)

; 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: mustprogress nounwind uwtable
define dso_local noundef float @_ZN8StatTest17uniformChiSquaredEPiii(ptr noundef nonnull align 1 dereferenceable(1) %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) #0 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca float, align 4
  %10 = alloca float, align 4
  %11 = alloca i32, align 4
  %12 = alloca float, 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 i32 %3, ptr %8, align 4, !tbaa !9
  %13 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store float 0.000000e+00, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = sitofp i32 %14 to float
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = sitofp i32 %16 to float
  %18 = fdiv float %15, %17
  store float %18, ptr %10, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %39, %4
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %42

24:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load i32, ptr %11, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = sitofp i32 %29 to float
  %31 = load float, ptr %10, align 4, !tbaa !11
  %32 = fsub float %30, %31
  store float %32, ptr %12, align 4, !tbaa !11
  %33 = load float, ptr %12, align 4, !tbaa !11
  %34 = load float, ptr %12, align 4, !tbaa !11
  %35 = load float, ptr %10, align 4, !tbaa !11
  %36 = fdiv float %34, %35
  %37 = load float, ptr %9, align 4, !tbaa !11
  %38 = call float @llvm.fmuladd.f32(float %33, float %36, float %37)
  store float %38, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %39

39:                                               ; preds = %24
  %40 = load i32, ptr %11, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %11, align 4, !tbaa !9
  br label %19, !llvm.loop !13

42:                                               ; preds = %23
  %43 = load float, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret float %43
}

; 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 = { 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 #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 = !{!"any pointer", !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}
!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 nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef float @_ZN8StatTest17uniformChiSquaredEPiii(ptr nocapture noundef nonnull readnone align 1 dereferenceable(1) %0, ptr nocapture noundef readonly %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 align 2 {
  %5 = sitofp i32 %3 to float
  %6 = sitofp i32 %2 to float
  %7 = fdiv float %5, %6
  %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
  %xtraiter = and i64 %wide.trip.count, 1
  %9 = icmp eq i32 %2, 1
  br i1 %9, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi float [ poison, %.lr.ph.preheader ], [ %27, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.015.unr = phi float [ 0.000000e+00, %.lr.ph.preheader ], [ %27, %.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
  %10 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv.unr
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = sitofp i32 %11 to float
  %13 = fsub float %12, %7
  %14 = fdiv float %13, %7
  %15 = tail call float @llvm.fmuladd.f32(float %13, float %14, float %.015.unr)
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %4
  %.0.lcssa = phi float [ 0.000000e+00, %4 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %15, %.lr.ph.epil ]
  ret float %.0.lcssa

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.015 = phi float [ 0.000000e+00, %.lr.ph.preheader.new ], [ %27, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %16 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = sitofp i32 %17 to float
  %19 = fsub float %18, %7
  %20 = fdiv float %19, %7
  %21 = tail call float @llvm.fmuladd.f32(float %19, float %20, float %.015)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %22 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv.next
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = sitofp i32 %23 to float
  %25 = fsub float %24, %7
  %26 = fdiv float %25, %7
  %27 = tail call float @llvm.fmuladd.f32(float %25, float %26, float %21)
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9
}

; 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(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" }
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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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