; LLVM IR from siconos/siconos :: externals/lbl/metis4/util.ll_ (ssum_strd)

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

9:                                                ; preds = %18, %3
  %10 = load i32, ptr %7, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %13, label %25

13:                                               ; preds = %9
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = load float, ptr %14, align 4, !tbaa !11
  %16 = load float, ptr %8, align 4, !tbaa !11
  %17 = fadd float %16, %15
  store float %17, ptr %8, align 4, !tbaa !11
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %7, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %7, align 4, !tbaa !5
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = sext i32 %21 to i64
  %24 = getelementptr inbounds float, ptr %22, i64 %23
  store ptr %24, ptr %5, align 8, !tbaa !9
  br label %9, !llvm.loop !13

25:                                               ; preds = %9
  %26 = load float, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret float %26
}

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 = !{!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(read, inaccessiblemem: none) uwtable
define dso_local float @__ssum_strd(i32 noundef %0, ptr nocapture noundef readonly %1, i32 noundef %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 = sext i32 %2 to i64
  %xtraiter = and i32 %0, 7
  %6 = icmp ult i32 %0, 8
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i32 %0, 2147483640
  br label %7

7:                                                ; preds = %7, %.lr.ph.new
  %.011 = phi float [ 0.000000e+00, %.lr.ph.new ], [ %30, %7 ]
  %.089 = phi ptr [ %1, %.lr.ph.new ], [ %31, %7 ]
  %niter = phi i32 [ 0, %.lr.ph.new ], [ %niter.next.7, %7 ]
  %8 = load float, ptr %.089, align 4, !tbaa !5
  %9 = fadd float %.011, %8
  %10 = getelementptr inbounds float, ptr %.089, i64 %5
  %11 = load float, ptr %10, align 4, !tbaa !5
  %12 = fadd float %9, %11
  %13 = getelementptr inbounds float, ptr %10, i64 %5
  %14 = load float, ptr %13, align 4, !tbaa !5
  %15 = fadd float %12, %14
  %16 = getelementptr inbounds float, ptr %13, i64 %5
  %17 = load float, ptr %16, align 4, !tbaa !5
  %18 = fadd float %15, %17
  %19 = getelementptr inbounds float, ptr %16, i64 %5
  %20 = load float, ptr %19, align 4, !tbaa !5
  %21 = fadd float %18, %20
  %22 = getelementptr inbounds float, ptr %19, i64 %5
  %23 = load float, ptr %22, align 4, !tbaa !5
  %24 = fadd float %21, %23
  %25 = getelementptr inbounds float, ptr %22, i64 %5
  %26 = load float, ptr %25, align 4, !tbaa !5
  %27 = fadd float %24, %26
  %28 = getelementptr inbounds float, ptr %25, i64 %5
  %29 = load float, ptr %28, align 4, !tbaa !5
  %30 = fadd float %27, %29
  %31 = getelementptr inbounds float, ptr %28, i64 %5
  %niter.next.7 = add i32 %niter, 8
  %niter.ncmp.7 = icmp eq i32 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, 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 ], [ %30, %7 ]
  %.011.unr = phi float [ 0.000000e+00, %.lr.ph ], [ %30, %7 ]
  %.089.unr = phi ptr [ %1, %.lr.ph ], [ %31, %7 ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader
  %.011.epil = phi float [ %33, %.epil.preheader ], [ %.011.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.089.epil = phi ptr [ %34, %.epil.preheader ], [ %.089.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.epil.preheader ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %32 = load float, ptr %.089.epil, align 4, !tbaa !5
  %33 = fadd float %.011.epil, %32
  %34 = getelementptr inbounds float, ptr %.089.epil, i64 %5
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.epil.preheader, !llvm.loop !11

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader, %3
  %.0.lcssa = phi float [ 0.000000e+00, %3 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %33, %.epil.preheader ]
  ret float %.0.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.unroll.disable"}


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