Constants of type float and double are emitted as int32 or int64

[Washi1337]

Describe the bug KoiVM does not have a dedicated instruction for pushing floating point constants. Instead, it reuses the PUSHI_DWORD or PUSHI_QWORD instructions, as they use the same amount of bits as a float or a double respectively. This is not taken into account in the recompiler. The recompiler always interprets constants pushed by these instructions as int32 or int64 values.

To Reproduce

using System;

namespace MyProgram
{
    public static class Program
    {
        public static void Main()
        {
            TestFloat(1.0F);
            TestDouble(2.0F);
        }

        public static void TestFloat(float x)
        {
            Console.WriteLine(x);
        }

        public static void TestDouble(double x)
        {
            Console.WriteLine(x);
        }
    }
}

Expected behavior Old Rod should devirtualize back to the following code:

Program.TestFloat(1.0F);
Program.TestDouble(2.0F);

but instead it produces:

Program.TestFloat((float)1065353216);
Program.TestDouble((double)4611686018427387904L);

Additional context Many Windows Forms and WPF applications depend on this, as they use floats to assign locations and/or sizes to controls.