8 May
2020
8 May
'20
5:31 p.m.
On 2020-05-08 10:21, Nick Desaulniers wrote:
One last suggestion. Add the "b" modifier to the mask operand: "orb %b1, %0". That forces the compiler to use the 8-bit register name instead of trying to deduce the width from the input.
Ah right: https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#x86Operandmodifiers
Looks like that works for both compilers. In that case, we can likely drop the `& 0xff`, too. Let me play with that, then I'll hopefully send a v3 today.
Good idea. I requested a while ago that they document these modifiers; they chose not to document them all which in some ways is good; it shows what they are willing to commit to indefinitely.
-hpa