view tests/mini/callingconv1.d @ 1346:6f4154b318ef

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.
author Frits van Bommel <fvbommel wxs.nl>
date Tue, 12 May 2009 15:50:48 +0200
parents 12b423e17860
children a400b1dd657f
line wrap: on
line source

module mini.callingconv1;

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

float foo(float a, float b)
{
    return a + b;
}

void main()
{
    float a = 1.5;
    float b = 2.5;
    float c;

    version(D_InlineAsm_X86)
    {
	asm
    	{
		mov EAX, [a];
        	push EAX;
        	mov EAX, [b];
        	push EAX;
        	call foo;
        	fstp c;
    	}
    }
    else version(D_InlineAsm_X86_64)
    {
    	asm
    	{
		movss XMM0, [a];
		movss XMM1, [b];
        	call foo;
		movss [c], XMM0;
    	}
    }
    printf("%f\n", c);

    assert(c == 4.0);
    
    printf("passed %f\n", c);
}