; LLVM IR from siconos/siconos :: externals/lbl/metis4/fortran.ll_ (Change2CNumbering)

; 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: nounwind uwtable
define dso_local void @__Change2CNumbering(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %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
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %20, %3
  %10 = load i32, ptr %7, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp sle i32 %10, %11
  br i1 %12, label %13, label %23

13:                                               ; preds = %9
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = load i32, ptr %7, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr %14, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %17, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %13
  %21 = load i32, ptr %7, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %7, align 4, !tbaa !5
  br label %9, !llvm.loop !11

23:                                               ; preds = %9
  %24 = load ptr, ptr %5, align 8, !tbaa !9
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !5
  store i32 %28, ptr %8, align 4, !tbaa !5
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %40, %23
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %33, label %43

33:                                               ; preds = %29
  %34 = load ptr, ptr %6, 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
}

; 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 willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = { 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 @__Change2CNumbering(i32 noundef %0, ptr nocapture noundef %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %.not12 = icmp slt i32 %0, 0
  br i1 %.not12, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %4 = add nuw i32 %0, 1
  %wide.trip.count = zext i32 %4 to i64
  %min.iters.check = icmp ult i32 %0, 7
  br i1 %min.iters.check, label %.lr.ph.preheader39, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 4294967288
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %5 = getelementptr inbounds i32, ptr %1, i64 %index
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  %wide.load = load <4 x i32>, ptr %5, align 4, !tbaa !5
  %wide.load24 = load <4 x i32>, ptr %6, align 4, !tbaa !5
  %7 = add nsw <4 x i32> %wide.load, <i32 -1, i32 -1, i32 -1, i32 -1>
  %8 = add nsw <4 x i32> %wide.load24, <i32 -1, i32 -1, i32 -1, i32 -1>
  store <4 x i32> %7, ptr %5, align 4, !tbaa !5
  store <4 x i32> %8, ptr %6, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %9 = icmp eq i64 %index.next, %n.vec
  br i1 %9, 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 %._crit_edge, label %.lr.ph.preheader39

.lr.ph.preheader39:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader39, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader39 ]
  %10 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = add nsw i32 %11, -1
  store i32 %12, ptr %10, 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 %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %3
  %13 = sext i32 %0 to i64
  %14 = getelementptr inbounds i32, ptr %1, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = icmp sgt i32 %15, 0
  br i1 %16, label %.lr.ph16.preheader, label %._crit_edge17

.lr.ph16.preheader:                               ; preds = %._crit_edge
  %wide.trip.count22 = zext nneg i32 %15 to i64
  %min.iters.check27 = icmp ult i32 %15, 8
  br i1 %min.iters.check27, label %.lr.ph16.preheader38, label %vector.ph28

vector.ph28:                                      ; preds = %.lr.ph16.preheader
  %n.vec30 = and i64 %wide.trip.count22, 2147483640
  br label %vector.body32

vector.body32:                                    ; preds = %vector.body32, %vector.ph28
  %index33 = phi i64 [ 0, %vector.ph28 ], [ %index.next36, %vector.body32 ]
  %17 = getelementptr inbounds i32, ptr %2, i64 %index33
  %18 = getelementptr inbounds i8, ptr %17, i64 16
  %wide.load34 = load <4 x i32>, ptr %17, align 4, !tbaa !5
  %wide.load35 = load <4 x i32>, ptr %18, align 4, !tbaa !5
  %19 = add nsw <4 x i32> %wide.load34, <i32 -1, i32 -1, i32 -1, i32 -1>
  %20 = add nsw <4 x i32> %wide.load35, <i32 -1, i32 -1, i32 -1, i32 -1>
  store <4 x i32> %19, ptr %17, align 4, !tbaa !5
  store <4 x i32> %20, ptr %18, align 4, !tbaa !5
  %index.next36 = add nuw i64 %index33, 8
  %21 = icmp eq i64 %index.next36, %n.vec30
  br i1 %21, label %middle.block25, label %vector.body32, !llvm.loop !14

middle.block25:                                   ; preds = %vector.body32
  %cmp.n37 = icmp eq i64 %n.vec30, %wide.trip.count22
  br i1 %cmp.n37, label %._crit_edge17, label %.lr.ph16.preheader38

.lr.ph16.preheader38:                             ; preds = %middle.block25, %.lr.ph16.preheader
  %indvars.iv19.ph = phi i64 [ 0, %.lr.ph16.preheader ], [ %n.vec30, %middle.block25 ]
  br label %.lr.ph16

.lr.ph16:                                         ; preds = %.lr.ph16.preheader38, %.lr.ph16
  %indvars.iv19 = phi i64 [ %indvars.iv.next20, %.lr.ph16 ], [ %indvars.iv19.ph, %.lr.ph16.preheader38 ]
  %22 = getelementptr inbounds i32, ptr %2, i64 %indvars.iv19
  %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.next20 = add nuw nsw i64 %indvars.iv19, 1
  %exitcond23.not = icmp eq i64 %indvars.iv.next20, %wide.trip.count22
  br i1 %exitcond23.not, label %._crit_edge17, label %.lr.ph16, !llvm.loop !15

._crit_edge17:                                    ; preds = %.lr.ph16, %middle.block25, %._crit_edge
  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, !12, !11}
!14 = distinct !{!14, !10, !11, !12}
!15 = distinct !{!15, !10, !12, !11}


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