; LLVM IR from LlimaV10/doom-nukem_v2 :: libft (ft_strcmp)

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

6:                                                ; preds = %34, %2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %7, i64 %8
  %10 = load i8, ptr %9, align 1, !tbaa !11
  %11 = sext i8 %10 to i32
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %5, align 8, !tbaa !9
  %14 = getelementptr inbounds i8, ptr %12, i64 %13
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = sext i8 %15 to i32
  %17 = icmp eq i32 %11, %16
  br i1 %17, label %18, label %32

18:                                               ; preds = %6
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %19, i64 %20
  %22 = load i8, ptr %21, align 1, !tbaa !11
  %23 = sext i8 %22 to i32
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %25, label %32

25:                                               ; preds = %18
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %5, align 8, !tbaa !9
  %28 = getelementptr inbounds i8, ptr %26, i64 %27
  %29 = load i8, ptr %28, align 1, !tbaa !11
  %30 = sext i8 %29 to i32
  %31 = icmp ne i32 %30, 0
  br label %32

32:                                               ; preds = %25, %18, %6
  %33 = phi i1 [ false, %18 ], [ false, %6 ], [ %31, %25 ]
  br i1 %33, label %34, label %37

34:                                               ; preds = %32
  %35 = load i64, ptr %5, align 8, !tbaa !9
  %36 = add i64 %35, 1
  store i64 %36, ptr %5, align 8, !tbaa !9
  br label %6, !llvm.loop !12

37:                                               ; preds = %32
  %38 = load ptr, ptr %3, align 8, !tbaa !5
  %39 = load i64, ptr %5, align 8, !tbaa !9
  %40 = getelementptr inbounds i8, ptr %38, i64 %39
  %41 = load i8, ptr %40, align 1, !tbaa !11
  %42 = zext i8 %41 to i32
  %43 = load ptr, ptr %4, align 8, !tbaa !5
  %44 = load i64, ptr %5, align 8, !tbaa !9
  %45 = getelementptr inbounds i8, ptr %43, i64 %44
  %46 = load i8, ptr %45, align 1, !tbaa !11
  %47 = zext i8 %46 to i32
  %48 = sub nsw i32 %42, %47
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i32 %48
}

; 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_strcmp(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %3, %2
  %.0 = phi i64 [ 0, %2 ], [ %9, %3 ]
  %4 = getelementptr inbounds i8, ptr %0, i64 %.0
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 %.0
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %8 = icmp ne i8 %5, %7
  %.not = icmp eq i8 %5, 0
  %or.cond = or i1 %.not, %8
  %.not14 = icmp eq i8 %7, 0
  %or.cond15 = or i1 %.not14, %or.cond
  %9 = add i64 %.0, 1
  br i1 %or.cond15, label %.critedge, label %3, !llvm.loop !8

.critedge:                                        ; preds = %3
  %10 = zext i8 %5 to i32
  %11 = zext i8 %7 to i32
  %12 = sub nsw i32 %10, %11
  ret i32 %12
}

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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass