Handling of the "t" spec needs to be improved. I take patch for it
from the this mail list (2014)
tcc don't load a function parameter into the float stack.
There is asm of the gcc and tcc:
long lrint (double x)
{
long retval;
__asm__ __volatile__ ("fistpl %0" : "=m" (retval) : "t" (x) : "st");
return retval;
}
gcc:
push %ebp
mov %esp,%ebp
sub $0x4,%esp
fldl 0x8(%ebp) # !!!
fistpl -0x4(%ebp)
mov -0x4(%ebp),%eax
leave
ret
tcc:
push %ebp
mov %esp,%ebp
sub $0x4,%esp
fistpl -0x4(%ebp) # where is fldl ???
mov -0x4(%ebp),%eax
jmp 14 <lrint+0x14>
leave
ret
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