; LLVM IR from siconos/siconos :: externals/SOL/lumod-c (commonlib)

; 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"

%union.QSORTrec = type { %struct._QSORTrec1 }
%struct._QSORTrec1 = type { ptr, ptr }

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local void @QS_delete(ptr noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %21, %3
  %8 = load i32, ptr %6, align 4, !tbaa !9
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp sgt i32 %8, %9
  br i1 %10, label %11, label %24

11:                                               ; preds = %7
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds %union.QSORTrec, ptr %12, i64 %14
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = sub nsw i32 %17, 1
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds %union.QSORTrec, ptr %16, i64 %19
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %15, ptr align 8 %20, i64 16, i1 false), !tbaa.struct !11
  br label %21

21:                                               ; preds = %11
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = add nsw i32 %22, -1
  store i32 %23, ptr %6, align 4, !tbaa !9
  br label %7, !llvm.loop !13

24:                                               ; preds = %7
  ret void
}

attributes #0 = { nocallback nofree 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" }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 16, !12}
!12 = !{!7, !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"

%union.QSORTrec = type { %struct._QSORTrec1 }
%struct._QSORTrec1 = type { ptr, ptr }

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @QS_delete(ptr nocapture noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = icmp sgt i32 %2, %1
  br i1 %4, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %5 = sext i32 %2 to i64
  %6 = sext i32 %1 to i64
  %7 = sub nsw i64 %5, %6
  %xtraiter = and i64 %7, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %5, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %8 = getelementptr inbounds %union.QSORTrec, ptr %0, i64 %indvars.iv.prol
  %9 = getelementptr i8, ptr %8, i64 -16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 8 dereferenceable(16) %9, i64 16, i1 false), !tbaa.struct !5
  %indvars.iv.next.prol = add nsw i64 %indvars.iv.prol, -1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !9

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ %5, %.lr.ph.preheader ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %10 = sub nsw i64 %6, %5
  %11 = icmp ugt i64 %10, -4
  br i1 %11, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %12 = getelementptr inbounds %union.QSORTrec, ptr %0, i64 %indvars.iv
  %13 = getelementptr i8, ptr %12, i64 -16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %12, ptr noundef nonnull align 8 dereferenceable(16) %13, i64 16, i1 false), !tbaa.struct !5
  %14 = getelementptr %union.QSORTrec, ptr %0, i64 %indvars.iv
  %15 = getelementptr i8, ptr %14, i64 -16
  %16 = getelementptr i8, ptr %14, i64 -32
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %15, ptr noundef nonnull align 8 dereferenceable(16) %16, i64 16, i1 false), !tbaa.struct !5
  %17 = getelementptr %union.QSORTrec, ptr %0, i64 %indvars.iv
  %18 = getelementptr i8, ptr %17, i64 -32
  %19 = getelementptr i8, ptr %17, i64 -48
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %18, ptr noundef nonnull align 8 dereferenceable(16) %19, i64 16, i1 false), !tbaa.struct !5
  %20 = getelementptr %union.QSORTrec, ptr %0, i64 %indvars.iv
  %21 = getelementptr i8, ptr %20, i64 -48
  %22 = getelementptr i8, ptr %20, i64 -64
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %21, ptr noundef nonnull align 8 dereferenceable(16) %22, i64 16, i1 false), !tbaa.struct !5
  %indvars.iv.next.3 = add nsw i64 %indvars.iv, -4
  %23 = icmp sgt i64 %indvars.iv.next.3, %6
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %3
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = !{i64 0, i64 16, !6}
!6 = !{!7, !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,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass