; LLVM IR from HRI-EU/Rcs :: src/RcsCore (Rcs_MatNd)

; 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"

%struct._MatNd = type { ptr, i32, i32, i32, i8 }

; 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 i32 @MatNd_maxEleIndex(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct._MatNd, ptr %7, i32 0, i32 1
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct._MatNd, ptr %10, i32 0, i32 2
  %12 = load i32, ptr %11, align 4, !tbaa !14
  %13 = mul i32 %9, %12
  store i32 %13, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct._MatNd, ptr %14, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !15
  %17 = getelementptr inbounds double, ptr %16, i64 0
  %18 = load double, ptr %17, align 8, !tbaa !16
  store double %18, ptr %6, align 8, !tbaa !16
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %43, %1
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %23, label %46

23:                                               ; preds = %19
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct._MatNd, ptr %24, i32 0, i32 0
  %26 = load ptr, ptr %25, align 8, !tbaa !15
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds double, ptr %26, i64 %28
  %30 = load double, ptr %29, align 8, !tbaa !16
  %31 = load double, ptr %6, align 8, !tbaa !16
  %32 = fcmp ogt double %30, %31
  br i1 %32, label %33, label %42

33:                                               ; preds = %23
  %34 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %34, ptr %3, align 4, !tbaa !9
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct._MatNd, ptr %35, i32 0, i32 0
  %37 = load ptr, ptr %36, align 8, !tbaa !15
  %38 = load i32, ptr %4, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds double, ptr %37, i64 %39
  %41 = load double, ptr %40, align 8, !tbaa !16
  store double %41, ptr %6, align 8, !tbaa !16
  br label %42

42:                                               ; preds = %33, %23
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %4, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %4, align 4, !tbaa !9
  br label %19, !llvm.loop !18

46:                                               ; preds = %19
  %47 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %47
}

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 = !{!"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 = !{!12, !10, i64 8}
!12 = !{!"_MatNd", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !13, i64 20}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{!12, !10, i64 12}
!15 = !{!12, !6, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"double", !7, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"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 i32 @MatNd_maxEleIndex(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 12
  %5 = load i32, ptr %4, align 4, !tbaa !12
  %6 = mul i32 %5, %3
  %7 = load ptr, ptr %0, align 8, !tbaa !13
  %8 = icmp sgt i32 %6, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %1
  %9 = load double, ptr %7, align 8, !tbaa !14
  %wide.trip.count = zext nneg i32 %6 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %10 = icmp eq i32 %6, 1
  br i1 %10, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

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

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.018 = phi double [ %9, %.lr.ph.preheader.new ], [ %.1.1, %.lr.ph ]
  %.01217 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %.113.1, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %11 = getelementptr inbounds double, ptr %7, i64 %indvars.iv
  %12 = load double, ptr %11, align 8, !tbaa !14
  %13 = fcmp ogt double %12, %.018
  %14 = trunc nuw nsw i64 %indvars.iv to i32
  %.113 = select i1 %13, i32 %14, i32 %.01217
  %.1 = select i1 %13, double %12, double %.018
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %15 = getelementptr inbounds double, ptr %7, i64 %indvars.iv.next
  %16 = load double, ptr %15, align 8, !tbaa !14
  %17 = fcmp ogt double %16, %.1
  %18 = trunc nuw nsw i64 %indvars.iv.next to i32
  %.113.1 = select i1 %17, i32 %18, i32 %.113
  %.1.1 = select i1 %17, double %16, double %.1
  %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 %.lr.ph, !llvm.loop !16

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.113.lcssa.ph = phi i32 [ poison, %.lr.ph.preheader ], [ %.113.1, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.018.unr = phi double [ %9, %.lr.ph.preheader ], [ %.1.1, %.lr.ph ]
  %.01217.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %.113.1, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %19 = getelementptr inbounds double, ptr %7, i64 %indvars.iv.unr
  %20 = load double, ptr %19, align 8, !tbaa !14
  %21 = fcmp ogt double %20, %.018.unr
  %22 = trunc nuw nsw i64 %indvars.iv.unr to i32
  %.113.epil = select i1 %21, i32 %22, i32 %.01217.unr
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %1
  %.012.lcssa = phi i32 [ 0, %1 ], [ %.113.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.113.epil, %.lr.ph.epil ]
  ret i32 %.012.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, !10, i64 8}
!6 = !{!"_MatNd", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !11, i64 20}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_Bool", !8, i64 0}
!12 = !{!6, !10, i64 12}
!13 = !{!6, !7, i64 0}
!14 = !{!15, !15, i64 0}
!15 = !{!"double", !8, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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