PR target/17101: question about powerpc s<cond> expanders

David Edelsohn dje@watson.ibm.com
Fri Nov 12 20:57:00 GMT 2004


>>>>> Nathan Sidwell writes:

Nathan> that is not what I observe, when I remove the TARGET_POWER check.
Nathan> For instance, V > 55

.sgt:
         cmpwi 7,3,55
         mfcr 3
         rlwinm 3,3,30,1
is that worse than
	li  9,0
	cmpwe 7,3,55
	ble- 7,.skip
	li  9,1
.skip:

	The branch sequence may be better, depending on how well predicted
it is. 

David



More information about the Gcc mailing list