; LLVM IR from ljm941004/HYPERCV_PUBLIC :: modules/process/src/c_src (matrixprocess)

; 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 @set_identity_matrix_float(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %46, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %49

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %42, %13
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %45

19:                                               ; preds = %14
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = icmp eq i32 %20, %21
  br i1 %22, label %23, label %32

23:                                               ; preds = %19
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = load i32, ptr %4, align 4, !tbaa !9
  %27 = mul nsw i32 %25, %26
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = add nsw i32 %27, %28
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds float, ptr %24, i64 %30
  store float 1.000000e+00, ptr %31, align 4, !tbaa !11
  br label %41

32:                                               ; preds = %19
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = load i32, ptr %4, align 4, !tbaa !9
  %36 = mul nsw i32 %34, %35
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = add nsw i32 %36, %37
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds float, ptr %33, i64 %39
  store float 0.000000e+00, ptr %40, align 4, !tbaa !11
  br label %41

41:                                               ; preds = %32, %23
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %7, align 4, !tbaa !9
  br label %14, !llvm.loop !13

45:                                               ; preds = %18
  br label %46

46:                                               ; preds = %45
  %47 = load i32, ptr %5, align 4, !tbaa !9
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !15

49:                                               ; preds = %12
  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 = !{!"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, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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: write) uwtable
define dso_local void @set_identity_matrix_float(ptr nocapture noundef writeonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.preheader.us.preheader, label %._crit_edge19

.preheader.us.preheader:                          ; preds = %2
  %4 = zext nneg i32 %1 to i64
  %xtraiter = and i64 %4, 1
  %5 = icmp eq i32 %1, 1
  %unroll_iter = and i64 %4, 2147483646
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv21 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next22, %._crit_edge.us ]
  %6 = mul nuw nsw i64 %indvars.iv21, %4
  %invariant.gep = getelementptr inbounds float, ptr %0, i64 %6
  %7 = getelementptr inbounds float, ptr %0, i64 %indvars.iv21
  %8 = getelementptr inbounds float, ptr %7, i64 %6
  br i1 %5, label %._crit_edge.us.unr-lcssa, label %.preheader.us.new

.preheader.us.new:                                ; preds = %.preheader.us, %16
  %indvars.iv = phi i64 [ %indvars.iv.next.1, %16 ], [ 0, %.preheader.us ]
  %niter = phi i64 [ %niter.next.1, %16 ], [ 0, %.preheader.us ]
  %9 = icmp eq i64 %indvars.iv21, %indvars.iv
  br i1 %9, label %11, label %10

10:                                               ; preds = %.preheader.us.new
  %gep = getelementptr inbounds float, ptr %invariant.gep, i64 %indvars.iv
  store float 0.000000e+00, ptr %gep, align 4, !tbaa !5
  br label %12

11:                                               ; preds = %.preheader.us.new
  store float 1.000000e+00, ptr %8, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %11, %10
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %13 = icmp eq i64 %indvars.iv21, %indvars.iv.next
  br i1 %13, label %15, label %14

14:                                               ; preds = %12
  %gep.1 = getelementptr inbounds float, ptr %invariant.gep, i64 %indvars.iv.next
  store float 0.000000e+00, ptr %gep.1, align 4, !tbaa !5
  br label %16

15:                                               ; preds = %12
  store float 1.000000e+00, ptr %8, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %15, %14
  %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.us.unr-lcssa, label %.preheader.us.new, !llvm.loop !9

._crit_edge.us.unr-lcssa:                         ; preds = %16, %.preheader.us
  %indvars.iv.unr = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next.1, %16 ]
  br i1 %lcmp.mod.not, label %._crit_edge.us, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.us.unr-lcssa
  %17 = icmp eq i64 %indvars.iv21, %indvars.iv.unr
  br i1 %17, label %19, label %18

18:                                               ; preds = %.epil.preheader
  %gep.epil = getelementptr inbounds float, ptr %invariant.gep, i64 %indvars.iv.unr
  store float 0.000000e+00, ptr %gep.epil, align 4, !tbaa !5
  br label %._crit_edge.us

19:                                               ; preds = %.epil.preheader
  store float 1.000000e+00, ptr %8, align 4, !tbaa !5
  br label %._crit_edge.us

._crit_edge.us:                                   ; preds = %18, %19, %._crit_edge.us.unr-lcssa
  %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
  %exitcond25.not = icmp eq i64 %indvars.iv.next22, %4
  br i1 %exitcond25.not, label %._crit_edge19, label %.preheader.us, !llvm.loop !11

._crit_edge19:                                    ; preds = %._crit_edge.us, %2
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: write) 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, !10}


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