On Tue, Apr 26, 2016 at 02:22:58PM +0100, Ramana Radhakrishnan wrote: > As $SUBJECT. The reason this caught my eye on aarch64 is because > the return value register (x0) is not identical to the register in which > the hidden parameter for AArch64 is set (x8). Thus setting this to true > seems to be quite reasonable and shaves off 100 odd mov x0, x8's from > cc1 in a bootstrap build. > > I don't expect this to make a huge impact on performance but as they say > every little counts. The AAPCS64 is quite explicit about not requiring that > the contents of x8 be kept live. > > Bootstrapped and regression tested on aarch64. > > Ok to apply ?
OK. Thanks, James
