; LLVM IR from scvalencia/MNIST_ASCII_challenge :: src (main)

; 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.raw_MNIST_line = type { i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @alloc_raw_MNIST_line(i32 noundef %0, i32 noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = call noalias ptr @malloc(i64 noundef 16) #4
  store ptr %9, ptr %7, align 8, !tbaa !9
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 784
  br i1 %11, label %12, label %14

12:                                               ; preds = %3
  %13 = load i32, ptr %5, align 4, !tbaa !5
  br label %15

14:                                               ; preds = %3
  br label %15

15:                                               ; preds = %14, %12
  %16 = phi i32 [ %13, %12 ], [ 784, %14 ]
  store i32 %16, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = load ptr, ptr %7, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.raw_MNIST_line, ptr %18, i32 0, i32 0
  store i32 %17, ptr %19, align 8, !tbaa !11
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = mul i64 4, %21
  %23 = call noalias ptr @malloc(i64 noundef %22) #4
  %24 = load ptr, ptr %7, align 8, !tbaa !9
  %25 = getelementptr inbounds %struct.raw_MNIST_line, ptr %24, i32 0, i32 1
  store ptr %23, ptr %25, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %43, %15
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %46

31:                                               ; preds = %26
  %32 = load ptr, ptr %6, align 8, !tbaa !9
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %32, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = load ptr, ptr %7, align 8, !tbaa !9
  %38 = getelementptr inbounds %struct.raw_MNIST_line, ptr %37, i32 0, i32 1
  %39 = load ptr, ptr %38, align 8, !tbaa !13
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i32, ptr %39, i64 %41
  store i32 %36, ptr %42, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %31
  %44 = load i32, ptr %8, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %8, align 4, !tbaa !5
  br label %26, !llvm.loop !14

46:                                               ; preds = %30
  %47 = load ptr, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret ptr %47
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind allocsize(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 = { nounwind allocsize(0) }

!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, !6, i64 0}
!12 = !{!"raw_MNIST_line", !6, i64 0, !10, i64 8}
!13 = !{!12, !10, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"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: mustprogress nofree nounwind willreturn uwtable
define dso_local noalias noundef ptr @alloc_raw_MNIST_line(i32 noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = tail call noalias dereferenceable_or_null(16) ptr @malloc(i64 noundef 16) #4
  %5 = tail call i32 @llvm.smin.i32(i32 %1, i32 784)
  store i32 %0, ptr %4, align 8, !tbaa !5
  %6 = sext i32 %5 to i64
  %7 = shl nsw i64 %6, 2
  %8 = tail call noalias ptr @malloc(i64 noundef %7) #4
  %9 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %8, ptr %9, align 8, !tbaa !11
  %10 = icmp sgt i32 %1, 0
  br i1 %10, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %11 = add nsw i32 %5, -1
  %12 = zext i32 %11 to i64
  %13 = shl nuw nsw i64 %12, 2
  %14 = add nuw nsw i64 %13, 4
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 4 dereferenceable(1) %8, ptr noundef nonnull align 4 dereferenceable(1) %2, i64 %14, i1 false), !tbaa !12
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.preheader, %3
  ret ptr %4
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

attributes #0 = { mustprogress nofree nounwind willreturn 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 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind allocsize(0) }

!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, !7, i64 0}
!6 = !{!"raw_MNIST_line", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!7, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass