Remove an old workaround that was kept around for ABI-compatibility on x86-64 between different LLVM versions. This means LLVM r67588 is required if you want to compile for x86-64, otherwise the backend will assert when you try to return e.g. struct { int i; char c; } from a function. (In particular, this is no longer compatible with LLVM 2.5) It also means that any code returning small structs on x86-64 will probably need to be recompiled in order to be linkable to code compiled with this change.

module tangotests.asm2;

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

int main()
{
    int i = 40;
    int j = 2;
    version(D_InlineAsm_X86)
    {
	asm
    	{	
        	mov EAX, i;
        	mov EBX, j;
        	add EAX, EBX;
        	mov i, EAX;
    	}
    }
    else version(D_InlineAsm_X86_64)
    {
	asm
	{
		mov EAX, i;
		mov EBX, j;
		add EAX, EBX;
		mov i, EAX;
    	}
    }
    printf("42 = %d\n", i);
    assert(i == 42);
    return 0;
}