; LLVM IR from siconos/siconos :: externals/lbl/metis4/fortran.ll_ (Change2FNumbering2)

; 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: nounwind uwtable
define dso_local void @__Change2FNumbering2(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 i32, 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) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %9 = load ptr, ptr %5, align 8, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds i32, ptr %9, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  store i32 %13, ptr %8, align 4, !tbaa !5
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %25, %3
  %15 = load i32, ptr %7, align 4, !tbaa !5
  %16 = load i32, ptr %8, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %28

18:                                               ; preds = %14
  %19 = load ptr, ptr %6, align 8, !tbaa !9
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %22, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %18
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %7, align 4, !tbaa !5
  br label %14, !llvm.loop !11

28:                                               ; preds = %14
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %40, %28
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = icmp sle i32 %30, %31
  br i1 %32, label %33, label %43

33:                                               ; preds = %29
  %34 = load ptr, ptr %5, align 8, !tbaa !9
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %34, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %37, align 4, !tbaa !5
  br label %40

40:                                               ; preds = %33
  %41 = load i32, ptr %7, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %7, align 4, !tbaa !5
  br label %29, !llvm.loop !13

43:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret void
}

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 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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: readwrite) uwtable
define dso_local void @__Change2FNumbering2(i32 noundef %0, ptr nocapture noundef %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds i32, ptr %1, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %6 to i64
  %min.iters.check = icmp ult i32 %6, 8
  br i1 %min.iters.check, label %.lr.ph.preheader36, label %vector.ph

.lr.ph.preheader36:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %8 = getelementptr inbounds i32, ptr %2, i64 %index
  %9 = getelementptr inbounds i8, ptr %8, i64 16
  %wide.load = load <4 x i32>, ptr %8, align 4, !tbaa !5
  %wide.load21 = load <4 x i32>, ptr %9, align 4, !tbaa !5
  %10 = add nsw <4 x i32> %wide.load, <i32 1, i32 1, i32 1, i32 1>
  %11 = add nsw <4 x i32> %wide.load21, <i32 1, i32 1, i32 1, i32 1>
  store <4 x i32> %10, ptr %8, align 4, !tbaa !5
  store <4 x i32> %11, ptr %9, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %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, %wide.trip.count
  br i1 %cmp.n, label %.preheader, label %.lr.ph.preheader36

.preheader:                                       ; preds = %.lr.ph, %middle.block, %3
  %.not12 = icmp slt i32 %0, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph14.preheader

.lr.ph14.preheader:                               ; preds = %.preheader
  %13 = add nuw i32 %0, 1
  %wide.trip.count19 = zext i32 %13 to i64
  %min.iters.check24 = icmp ult i32 %0, 7
  br i1 %min.iters.check24, label %.lr.ph14.preheader35, label %vector.ph25

.lr.ph14.preheader35:                             ; preds = %middle.block22, %.lr.ph14.preheader
  %indvars.iv16.ph = phi i64 [ 0, %.lr.ph14.preheader ], [ %n.vec27, %middle.block22 ]
  br label %.lr.ph14

vector.ph25:                                      ; preds = %.lr.ph14.preheader
  %n.vec27 = and i64 %wide.trip.count19, 4294967288
  br label %vector.body29

vector.body29:                                    ; preds = %vector.body29, %vector.ph25
  %index30 = phi i64 [ 0, %vector.ph25 ], [ %index.next33, %vector.body29 ]
  %14 = getelementptr inbounds i32, ptr %1, i64 %index30
  %15 = getelementptr inbounds i8, ptr %14, i64 16
  %wide.load31 = load <4 x i32>, ptr %14, align 4, !tbaa !5
  %wide.load32 = load <4 x i32>, ptr %15, align 4, !tbaa !5
  %16 = add nsw <4 x i32> %wide.load31, <i32 1, i32 1, i32 1, i32 1>
  %17 = add nsw <4 x i32> %wide.load32, <i32 1, i32 1, i32 1, i32 1>
  store <4 x i32> %16, ptr %14, align 4, !tbaa !5
  store <4 x i32> %17, ptr %15, align 4, !tbaa !5
  %index.next33 = add nuw i64 %index30, 8
  %18 = icmp eq i64 %index.next33, %n.vec27
  br i1 %18, label %middle.block22, label %vector.body29, !llvm.loop !13

middle.block22:                                   ; preds = %vector.body29
  %cmp.n34 = icmp eq i64 %n.vec27, %wide.trip.count19
  br i1 %cmp.n34, label %._crit_edge, label %.lr.ph14.preheader35

.lr.ph:                                           ; preds = %.lr.ph.preheader36, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader36 ]
  %19 = getelementptr inbounds i32, ptr %2, i64 %indvars.iv
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %19, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader, label %.lr.ph, !llvm.loop !14

.lr.ph14:                                         ; preds = %.lr.ph14.preheader35, %.lr.ph14
  %indvars.iv16 = phi i64 [ %indvars.iv.next17, %.lr.ph14 ], [ %indvars.iv16.ph, %.lr.ph14.preheader35 ]
  %22 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv16
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %22, align 4, !tbaa !5
  %indvars.iv.next17 = add nuw nsw i64 %indvars.iv16, 1
  %exitcond20.not = icmp eq i64 %indvars.iv.next17, %wide.trip.count19
  br i1 %exitcond20.not, label %._crit_edge, label %.lr.ph14, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph14, %middle.block22, %.preheader
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) 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 = !{!"int", !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, !11, !12}
!14 = distinct !{!14, !10, !12, !11}
!15 = distinct !{!15, !10, !12, !11}


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