Bug 1027 – "fadd real ptr [EAX];" does not compile

Works OK with fld and fst, but fails for any two-operand instruction -- fadd, fsub, fdiv, fmul, fcomp, etc. They all work correctly with 'double ptr' and 'float ptr'. (I suspect this is a side-effect of the ancient change from 'extended' to 'real'). This is a show-stopper for 80-bit vector operations :-(. Also the ambiguous " fadd [EAX];" compiles, but I'm not sure that it should -- which size does it use? ---------- bug.d(7): bad type/size of operands 'fadd' ---------- void main() { real a = 3.0; asm { lea EAX, a; fld real ptr [EAX]; // ok fadd real ptr [EAX]; // bug fsub real ptr [EAX]; // bug fmul real ptr [EAX]; // bug fdiv real ptr [EAX]; // bug fcom real ptr [EAX]; // bug fucom real ptr [EAX]; // bug fstp st(0), st; fldz; fstp real ptr [EAX]; // ok } assert(a==0); }

It shouldn't compile, as there is no such instruction! Adding (etc.) for 80 bit operands can only be done with ST registers.

[email protected] wrote: > http://d.puremagic.com/issues/show_bug.cgi?id=1027 > > > [email protected] changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > Status|NEW |RESOLVED > Resolution| |INVALID > > > > > ------- Comment #1 from [email protected] 2007-03-06 05:14 ------- > It shouldn't compile, as there is no such instruction! Adding (etc.) for 80 bit > operands can only be done with ST registers. > > Aargh! You're right. I'm a goose! But on the other, minor point -- what operand size does fadd [EAX]; use?