; LLVM IR from yettabaa/cub3D :: Common/Libft (ft_memcmp)

; 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: nounwind uwtable
define dso_local i32 @ft_memcmp(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  store i64 0, ptr %8, align 8, !tbaa !9
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = icmp ne i64 %10, 0
  br i1 %11, label %13, label %12

12:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %48

13:                                               ; preds = %3
  br label %14

14:                                               ; preds = %33, %13
  %15 = load i64, ptr %8, align 8, !tbaa !9
  %16 = load i64, ptr %7, align 8, !tbaa !9
  %17 = sub i64 %16, 1
  %18 = icmp ult i64 %15, %17
  br i1 %18, label %19, label %31

19:                                               ; preds = %14
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i64, ptr %8, align 8, !tbaa !9
  %22 = getelementptr inbounds i8, ptr %20, i64 %21
  %23 = load i8, ptr %22, align 1, !tbaa !11
  %24 = zext i8 %23 to i32
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load i64, ptr %8, align 8, !tbaa !9
  %27 = getelementptr inbounds i8, ptr %25, i64 %26
  %28 = load i8, ptr %27, align 1, !tbaa !11
  %29 = zext i8 %28 to i32
  %30 = icmp eq i32 %24, %29
  br label %31

31:                                               ; preds = %19, %14
  %32 = phi i1 [ false, %14 ], [ %30, %19 ]
  br i1 %32, label %33, label %36

33:                                               ; preds = %31
  %34 = load i64, ptr %8, align 8, !tbaa !9
  %35 = add i64 %34, 1
  store i64 %35, ptr %8, align 8, !tbaa !9
  br label %14, !llvm.loop !12

36:                                               ; preds = %31
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load i64, ptr %8, align 8, !tbaa !9
  %39 = getelementptr inbounds i8, ptr %37, i64 %38
  %40 = load i8, ptr %39, align 1, !tbaa !11
  %41 = zext i8 %40 to i32
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  %43 = load i64, ptr %8, align 8, !tbaa !9
  %44 = getelementptr inbounds i8, ptr %42, i64 %43
  %45 = load i8, ptr %44, align 1, !tbaa !11
  %46 = zext i8 %45 to i32
  %47 = sub nsw i32 %41, %46
  store i32 %47, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %48

48:                                               ; preds = %36, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %49 = load i32, ptr %4, align 4
  ret i32 %49
}

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

; 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 }

!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 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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(argmem: read) uwtable
define dso_local range(i32 -255, 256) i32 @ft_memcmp(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %19, label %.preheader

.preheader:                                       ; preds = %3
  %4 = add i64 %2, -1
  %.not16 = icmp eq i64 %4, 0
  br i1 %.not16, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %10
  %.013 = phi i64 [ %11, %10 ], [ 0, %.preheader ]
  %5 = getelementptr inbounds i8, ptr %0, i64 %.013
  %6 = load i8, ptr %5, align 1, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 %.013
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = icmp eq i8 %6, %8
  br i1 %9, label %10, label %.critedge

10:                                               ; preds = %.lr.ph
  %11 = add nuw i64 %.013, 1
  %exitcond.not = icmp eq i64 %11, %4
  br i1 %exitcond.not, label %.critedge, label %.lr.ph, !llvm.loop !8

.critedge:                                        ; preds = %.lr.ph, %10, %.preheader
  %.0.lcssa = phi i64 [ 0, %.preheader ], [ %4, %10 ], [ %.013, %.lr.ph ]
  %12 = getelementptr inbounds i8, ptr %0, i64 %.0.lcssa
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = zext i8 %13 to i32
  %15 = getelementptr inbounds i8, ptr %1, i64 %.0.lcssa
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %17 = zext i8 %16 to i32
  %18 = sub nsw i32 %14, %17
  br label %19

19:                                               ; preds = %3, %.critedge
  %.012 = phi i32 [ %18, %.critedge ], [ 0, %3 ]
  ret i32 %.012
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass