bcGenBench

import std.datetime : StopWatch;
import std.stdio;
import ddmd.ctfe.bc_common;
import ddmd.ctfe.bc;
import core.stdc.string;

__gshared int[4096] bca;
__gshared BCGen gen;
uint makeFirst()
{
   StopWatch sw;
   sw.start;

   with (gen)
{
    Initialize();

    auto p1 = genParameter(BCType(BCTypeEnum.String));//SP[4]
    auto p2 = genParameter(BCType(BCTypeEnum.String));//SP[8]
    auto p3 = genParameter(BCType(BCTypeEnum.String));//SP[12]
    beginFunction();//fn(1
    auto tmp1 = genTemporary(BCType(BCTypeEnum.i32));//SP[16]
    p1 = p1.i32;
    p2 = p2.i32;
    p3 = p3.i32;
    Load32(tmp1, p2);
    Gt3(BCValue.init, tmp1, BCValue(Imm32(2)));
    AssertError(BCValue.init, BCValue(Imm32(1)/*Error*/));
    auto tmp2 = genTemporary(BCType(BCTypeEnum.i32));//SP[20]
    auto tmp3 = genTemporary(BCType(BCTypeEnum.Char));//SP[24]
    auto tmp4 = genTemporary(BCType(BCTypeEnum.i32));//SP[28]
    Add3(tmp2, p2, BCValue(Imm32(1)));
    auto tmp5 = genTemporary(BCType(BCTypeEnum.i32));//SP[32]
    Mod3(tmp5, BCValue(Imm32(2)), BCValue(Imm32(4)));
    Div3(tmp4, BCValue(Imm32(2)), BCValue(Imm32(4)));
    Add3(tmp2, tmp2, tmp4);
    Load32(tmp3, tmp2);
    Byte3(tmp3, tmp3, tmp5);
    Ret(tmp3);
    endFunction();

    Finalize();

    memcpy(&bca[0], &gen.byteCodeArray[0], gen.ip * uint.sizeof);
  sw.stop;

//    writeln(bca[0 .. gen.ip].printInstructions);
}
  return cast(uint)sw.peek.nsecs;
}

void main()
{
  import std.stdio;
  writeln ("makeing the first bytecode took ", makeFirst(), "nsecs");
  foreach (n;0 .. 2)writeln ("makeing the ",n," bytecode took ", makeFirst(), "nsecs");
}