; LLVM IR from siconos/siconos :: externals/lbl/metis4/mfm.ll_ (Compute2WayHLoadImbalance)

; 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: nounwind uwtable
define dso_local float @__Compute2WayHLoadImbalance(i32 noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca float, align 4
  %9 = alloca float, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store float 0.000000e+00, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %41, %3
  %11 = load i32, ptr %7, align 4, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %14, label %44

14:                                               ; preds = %10
  %15 = load ptr, ptr %6, align 8, !tbaa !9
  %16 = getelementptr inbounds float, ptr %15, i64 0
  %17 = load float, ptr %16, align 4, !tbaa !11
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = load i32, ptr %7, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds float, ptr %18, i64 %20
  %22 = load float, ptr %21, align 4, !tbaa !11
  %23 = fsub float %17, %22
  %24 = fpext float %23 to double
  %25 = call double @llvm.fabs.f64(double %24)
  %26 = load ptr, ptr %6, align 8, !tbaa !9
  %27 = getelementptr inbounds float, ptr %26, i64 0
  %28 = load float, ptr %27, align 4, !tbaa !11
  %29 = fpext float %28 to double
  %30 = fdiv double %25, %29
  %31 = fptrunc double %30 to float
  store float %31, ptr %9, align 4, !tbaa !11
  %32 = load float, ptr %8, align 4, !tbaa !11
  %33 = load float, ptr %9, align 4, !tbaa !11
  %34 = fcmp olt float %32, %33
  br i1 %34, label %35, label %37

35:                                               ; preds = %14
  %36 = load float, ptr %9, align 4, !tbaa !11
  br label %39

37:                                               ; preds = %14
  %38 = load float, ptr %8, align 4, !tbaa !11
  br label %39

39:                                               ; preds = %37, %35
  %40 = phi float [ %36, %35 ], [ %38, %37 ]
  store float %40, ptr %8, align 4, !tbaa !11
  br label %41

41:                                               ; preds = %39
  %42 = load i32, ptr %7, align 4, !tbaa !5
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %7, align 4, !tbaa !5
  br label %10, !llvm.loop !13

44:                                               ; preds = %10
  %45 = load float, ptr %8, align 4, !tbaa !11
  %46 = fpext float %45 to double
  %47 = fadd double 1.000000e+00, %46
  %48 = fptrunc double %47 to float
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret float %48
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"int", !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 = !{!"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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local float @__Compute2WayHLoadImbalance(i32 noundef %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %0, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %5 = load float, ptr %2, align 4, !tbaa !5
  %wide.trip.count = zext nneg i32 %0 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %6 = icmp eq i32 %0, 1
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %7

7:                                                ; preds = %7, %.lr.ph.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.new ], [ %indvars.iv.next.1, %7 ]
  %.01112 = phi float [ 0.000000e+00, %.lr.ph.new ], [ %21, %7 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.1, %7 ]
  %8 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = fsub float %5, %9
  %11 = tail call float @llvm.fabs.f32(float %10)
  %12 = fdiv float %11, %5
  %13 = fcmp olt float %.01112, %12
  %14 = select i1 %13, float %12, float %.01112
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %15 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %16 = load float, ptr %15, align 4, !tbaa !5
  %17 = fsub float %5, %16
  %18 = tail call float @llvm.fabs.f32(float %17)
  %19 = fdiv float %18, %5
  %20 = fcmp olt float %14, %19
  %21 = select i1 %20, float %19, float %14
  %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 %7, !llvm.loop !9

._crit_edge.loopexit.unr-lcssa:                   ; preds = %7, %.lr.ph
  %.lcssa.ph = phi float [ poison, %.lr.ph ], [ %21, %7 ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next.1, %7 ]
  %.01112.unr = phi float [ 0.000000e+00, %.lr.ph ], [ %21, %7 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge.loopexit, label %._crit_edge.loopexit.epilog-lcssa

._crit_edge.loopexit.epilog-lcssa:                ; preds = %._crit_edge.loopexit.unr-lcssa
  %22 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.unr
  %23 = load float, ptr %22, align 4, !tbaa !5
  %24 = fsub float %5, %23
  %25 = tail call float @llvm.fabs.f32(float %24)
  %26 = fdiv float %25, %5
  %27 = fcmp olt float %.01112.unr, %26
  %28 = select i1 %27, float %26, float %.01112.unr
  br label %._crit_edge.loopexit

._crit_edge.loopexit:                             ; preds = %._crit_edge.loopexit.unr-lcssa, %._crit_edge.loopexit.epilog-lcssa
  %.lcssa = phi float [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %28, %._crit_edge.loopexit.epilog-lcssa ]
  %29 = fadd float %.lcssa, 1.000000e+00
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %3
  %.011.lcssa = phi float [ 1.000000e+00, %3 ], [ %29, %._crit_edge.loopexit ]
  ret float %.011.lcssa
}

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

attributes #0 = { 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" }
attributes #1 = { 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}
!10 = !{!"llvm.loop.mustprogress"}


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