Hello All,
I have a machine, with a condition code register of type BImode.
It is 12 bit, can hold boolean flags.
Now, consider following C-code:
bool a, b ;
if(a == b)
// do this
else
// do that
In Gcc, it will call the "cbranchsi4" construct to translate this to RTL,
and then, on my machine, a and b can either be:
a. In general register file.
b. In the condition register.
Now, to do this test, I need to call the XOR function. There is a
predefined macro for this,
xorsi3.
Question is : Am I allowed to put the binary XOR operation here , with
the source and
destination register constrained to be type "y", meaning condition
register, able to hold
type BImode, and nothing else ?. Or should I define "xorbi3", but then
how do I refer to "xorsi3"
to make the compiler clear it can also use the 32-bit XOR for binary XOR ?.
Best Regards,
Henri.
