[Release Mode] Conditional check against byte.MaxValue unexpectedly ignored in .NET 9 #118317

var bytes = new List<byte>();
const int length = 9501;
for(int i = 0; i < length; i++)
    bytes.Add(byte.MaxValue);

for (var i = 0; i < length; i++)
{
    byte value = bytes[i];
    if (value == int.MaxValue) continue; // the bug happens because of this line (remove it and the code will work normally)
    if (value == byte.MaxValue) continue; // it gets skipped
    Console.WriteLine($"{value} == {byte.MaxValue} ? {(value == byte.MaxValue)}");
}

var bytes = new List<byte>();
const int length = 9501;
for(int i = 0; i < length; i++)
    bytes.Add(byte.MaxValue);

for (int y = 0; y < 128; y++)
{
    for (int x = 0; x < 128; x++)
    {
    
    }   
}

for (var i = 0; i < length; i++)
{
    byte value = bytes[i];
    if (value == int.MaxValue) continue;
    if (value == byte.MaxValue) continue; // it gets skipped
    Console.WriteLine($"{value} == {byte.MaxValue} ? {(value == byte.MaxValue)}"); // Prints "255 == 255 ? False"
}

var bytes = new List<byte>();
const int length = 9501;
for(int i = 0; i < length; i++)
    bytes.Add(byte.MaxValue);

for (int i = 0; i < 128 * 128; i++) /
{

}
for (var i = 0; i < length; i++)
{
    byte value = bytes[i];
    if (value == int.MaxValue) continue;
    if (value == byte.MaxValue) continue; // gets skipped
    Console.WriteLine($"{value} == {byte.MaxValue} ? {(value == byte.MaxValue)}");
}

bool IsBugThere(byte u)  // u is byte.MaxValue
{ 
    byte value = u;
    if (value == UInt16.MaxValue) return false;
    if (value == byte.MaxValue) return false;
    Console.WriteLine($"{value} == {byte.MaxValue} ? {(value == byte.MaxValue)}");
    return true;
}

for(int i = 0; i < 5; i++)
{
    for(int j = 0; j < 1000; j++)
    {
        IsBugThere(255);
    }
    Thread.Sleep(100);
    Console.WriteLine(IsBugThere(byte.MaxValue));
}