Implemented proper support for naked asm using llvm module level asm. Still not 100% complete, but already 1000 times better that what we had before. Don's BignumX86 implementation from Tango (when turned into a standalone unittest) seems to fully work with no changes, and great performance :) Fixed align N; in asm blocks. Fixed inreg parameter passing on x86 for ref/out params. Removed support for lazy initialization of function local static variables, I have no idea why I ever implemented this, it's not in the D spec, and DMD doesn't support it :P Some of the global variable related changes might cause minor regressions, but they should be easily fixable.

extern(C) int printf(char*, ...);

void main()
{
    int i = func();
    printf("%d\n", i);
    assert(i == 42);
}

int func()
{
    version (LLVM_InlineAsm_X86)
    {
        asm
        {
            naked;
            mov EAX, 42;
            ret;
        }
    }
    else version(LLVM_InlineAsm_X86_64)
    {
        asm
        {
            naked;
            movq RAX, 42;
            ret;
        }
    }
}