; LLVM IR from JonathanSalwan/Triton :: src/examples/python/ctf-writeups/custom-crackmes/aarch64-hash (crackme_hash)

; 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"

@serial = external dso_local global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local i32 @check(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 43981, ptr %4, align 4, !tbaa !9
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %29, %1
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = load i32, ptr %3, align 4, !tbaa !9
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds i8, ptr %6, i64 %8
  %10 = load i8, ptr %9, align 1, !tbaa !11
  %11 = icmp ne i8 %10, 0
  br i1 %11, label %12, label %32

12:                                               ; preds = %5
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = load i32, ptr %3, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !11
  %18 = sext i8 %17 to i32
  %19 = load ptr, ptr @serial, align 8, !tbaa !5
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = srem i32 %20, 5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i8, ptr %19, i64 %22
  %24 = load i8, ptr %23, align 1, !tbaa !11
  %25 = sext i8 %24 to i32
  %26 = xor i32 %18, %25
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = add nsw i32 %27, %26
  store i32 %28, ptr %4, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %12
  %30 = load i32, ptr %3, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %3, align 4, !tbaa !9
  br label %5, !llvm.loop !12

32:                                               ; preds = %5
  %33 = load i32, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %33
}

; 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 = !{!"int", !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"

@serial = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @check(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %.not9 = icmp eq i8 %2, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %3 = load ptr, ptr @serial, align 8, !tbaa !8
  br label %4

4:                                                ; preds = %.lr.ph, %4
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %4 ]
  %5 = phi i8 [ %2, %.lr.ph ], [ %15, %4 ]
  %.011 = phi i32 [ 43981, %.lr.ph ], [ %13, %4 ]
  %6 = trunc nuw nsw i64 %indvars.iv to i32
  %7 = urem i32 %6, 5
  %8 = zext nneg i32 %7 to i64
  %9 = getelementptr inbounds i8, ptr %3, i64 %8
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %11 = xor i8 %10, %5
  %12 = sext i8 %11 to i32
  %13 = add nsw i32 %.011, %12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %14 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %.not = icmp eq i8 %15, 0
  br i1 %.not, label %._crit_edge, label %4, !llvm.loop !10

._crit_edge:                                      ; preds = %4, %1
  %.0.lcssa = phi i32 [ 43981, %1 ], [ %13, %4 ]
  ret i32 %.0.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) 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 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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