; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Matrices/Sources (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"

%struct.Matrix = type { ptr, i32, i32, i32, i32, ptr, ptr }

@stderr = external global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [22 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [42 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @matrixRemoveWtoFr(ptr noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %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
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %3
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef @.str.9, ptr noundef @.str.10, ptr noundef @.str.2) #3
  call void @exit(i32 noundef -83386157) #4
  unreachable

12:                                               ; preds = %3
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp slt i32 %13, 0
  br i1 %14, label %30, label %15

15:                                               ; preds = %12
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.Matrix, ptr %17, i32 0, i32 1
  %19 = load i32, ptr %18, align 8, !tbaa !11
  %20 = icmp sge i32 %16, %19
  br i1 %20, label %30, label %21

21:                                               ; preds = %15
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = icmp slt i32 %22, 0
  br i1 %23, label %30, label %24

24:                                               ; preds = %21
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Matrix, ptr %26, i32 0, i32 3
  %28 = load i32, ptr %27, align 8, !tbaa !13
  %29 = icmp sge i32 %25, %28
  br i1 %29, label %30, label %33

30:                                               ; preds = %24, %21, %15, %12
  %31 = load ptr, ptr @stderr, align 8, !tbaa !5
  %32 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %31, ptr noundef @.str.13, ptr noundef @.str.2) #3
  call void @exit(i32 noundef -83385991) #4
  unreachable

33:                                               ; preds = %24
  br label %34

34:                                               ; preds = %33
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.Matrix, ptr %35, i32 0, i32 0
  %37 = load ptr, ptr %36, align 8, !tbaa !14
  %38 = load i32, ptr %5, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds ptr, ptr %37, i64 %39
  %41 = load ptr, ptr %40, align 8, !tbaa !5
  %42 = load i32, ptr %6, align 4, !tbaa !9
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds ptr, ptr %41, i64 %43
  store ptr null, ptr %44, align 8, !tbaa !5
  ret void
}

attributes #0 = { 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" }
attributes #1 = { noreturn 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" }
attributes #2 = { 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 #3 = { nounwind }
attributes #4 = { noreturn 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 = !{!"Matrix", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !6, i64 24, !6, i64 32}
!13 = !{!12, !10, i64 16}
!14 = !{!12, !6, i64 0}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.2 = external hidden unnamed_addr constant [22 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [31 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [42 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @matrixRemoveWtoFr(ptr noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #2 {
  %4 = icmp eq ptr %0, null
  br i1 %4, label %5, label %8

5:                                                ; preds = %3
  %6 = load ptr, ptr @stderr, align 8, !tbaa !5
  %7 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %6, ptr noundef nonnull @.str.9, ptr noundef nonnull @.str.10, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83386157) #4
  unreachable

8:                                                ; preds = %3
  %9 = icmp slt i32 %1, 0
  br i1 %9, label %18, label %10

10:                                               ; preds = %8
  %11 = getelementptr inbounds i8, ptr %0, i64 8
  %12 = load i32, ptr %11, align 8, !tbaa !9
  %13 = icmp sle i32 %12, %1
  %14 = icmp slt i32 %2, 0
  %or.cond = or i1 %14, %13
  br i1 %or.cond, label %18, label %15

15:                                               ; preds = %10
  %16 = getelementptr inbounds i8, ptr %0, i64 16
  %17 = load i32, ptr %16, align 8, !tbaa !12
  %.not = icmp sgt i32 %17, %2
  br i1 %.not, label %21, label %18

18:                                               ; preds = %15, %10, %8
  %19 = load ptr, ptr @stderr, align 8, !tbaa !5
  %20 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef nonnull @.str.13, ptr noundef nonnull @.str.2) #3
  tail call void @exit(i32 noundef -83385991) #4
  unreachable

21:                                               ; preds = %15
  %22 = load ptr, ptr %0, align 8, !tbaa !13
  %23 = zext nneg i32 %1 to i64
  %24 = getelementptr inbounds ptr, ptr %22, i64 %23
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  %26 = zext nneg i32 %2 to i64
  %27 = getelementptr inbounds ptr, ptr %25, i64 %26
  store ptr null, ptr %27, align 8, !tbaa !5
  ret void
}

attributes #0 = { 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" }
attributes #1 = { noreturn 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" }
attributes #2 = { 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 #3 = { cold nounwind }
attributes #4 = { noreturn 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, !11, i64 8}
!10 = !{!"Matrix", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 16}
!13 = !{!10, !6, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass