; LLVM IR from JessonYue/LeetCodeLearning :: Array/caiweixiong/c (homework_matrix)

; 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"

@.str = external hidden unnamed_addr constant [27 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @printfMatrix(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
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %11, ptr %7, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %12)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %37, %3
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp ult i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %40

19:                                               ; preds = %14
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %30, %19
  %22 = load i32, ptr %10, align 4, !tbaa !9
  %23 = load i32, ptr %6, align 4, !tbaa !9
  %24 = icmp ult i32 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %35

26:                                               ; preds = %21
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %28)
  br label %30

30:                                               ; preds = %26
  %31 = load i32, ptr %10, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %10, align 4, !tbaa !9
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = getelementptr inbounds i32, ptr %33, i32 1
  store ptr %34, ptr %7, align 8, !tbaa !5
  br label %21, !llvm.loop !11

35:                                               ; preds = %25
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %37

37:                                               ; preds = %35
  %38 = load i32, ptr %8, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %8, align 4, !tbaa !9
  br label %14, !llvm.loop !13

40:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @printf(ptr noundef, ...) #2

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 = { "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 #3 = { 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 = 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"

@.str = external hidden unnamed_addr constant [27 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @printfMatrix(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef %0)
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge17, label %.lr.ph16

.lr.ph16:                                         ; preds = %3
  %.not18 = icmp eq i32 %2, 0
  br i1 %.not18, label %.lr.ph16.split, label %.lr.ph.us

.lr.ph.us:                                        ; preds = %.lr.ph16, %._crit_edge.us
  %.0914.us = phi i32 [ %12, %._crit_edge.us ], [ 0, %.lr.ph16 ]
  %.01013.us = phi ptr [ %10, %._crit_edge.us ], [ %0, %.lr.ph16 ]
  %5 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %6

6:                                                ; preds = %.lr.ph.us, %6
  %.012.us = phi i32 [ 0, %.lr.ph.us ], [ %9, %6 ]
  %.111.us = phi ptr [ %.01013.us, %.lr.ph.us ], [ %10, %6 ]
  %7 = load i32, ptr %.111.us, align 4, !tbaa !5
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %7)
  %9 = add nuw i32 %.012.us, 1
  %10 = getelementptr inbounds i8, ptr %.111.us, i64 4
  %exitcond.not = icmp eq i32 %9, %2
  br i1 %exitcond.not, label %._crit_edge.us, label %6, !llvm.loop !9

._crit_edge.us:                                   ; preds = %6
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %12 = add nuw i32 %.0914.us, 1
  %exitcond20.not = icmp eq i32 %12, %1
  br i1 %exitcond20.not, label %._crit_edge17, label %.lr.ph.us, !llvm.loop !11

._crit_edge17:                                    ; preds = %._crit_edge.us, %.lr.ph16.split, %3
  ret void

.lr.ph16.split:                                   ; preds = %.lr.ph16, %.lr.ph16.split
  %.0914 = phi i32 [ %15, %.lr.ph16.split ], [ 0, %.lr.ph16 ]
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %14 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %15 = add nuw i32 %.0914, 1
  %exitcond21.not = icmp eq i32 %15, %1
  br i1 %exitcond21.not, label %._crit_edge17, label %.lr.ph16.split, !llvm.loop !11
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { nofree nounwind "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}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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