Inline Assembly Register Allocation Bug? (Was: Possible bug withgcc 2.95.2 on Hitachi h8)

Ross Crawford rossc@prologic.com.au
Mon Jul 17 19:09:00 GMT 2000


>>   asm volatile ("movl\t(%1),%0\n\t"
>> 		"movl\t(%1),%0"
>> 		: "=r" (temp) : "r" (p));
>
>This is not a bug.  You need to tell gcc that operand 0 is earlyclobbered:
>
>  asm volatile ("movl\t(%1),%0\n\t"
>		"movl\t(%1),%0"
>		: "=&r" (temp) : "r" (p));
>
>Bernd

Does this imply a bug in egcs 1.1.2 (it should have produced the same
erroneous code) ?

ROSCO



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