On Wed, Sep 5, 2012 at 9:46 AM, Jeff Kenton <jkenton@xxxxxxxxxx> wrote: > On 09/05/2012 12:36 PM, David Brown wrote: >> >> On 05/09/12 07:37, Ian Lance Taylor wrote: >>> >>> On Tue, Sep 4, 2012 at 10:35 PM, Xin Tong<xerox.time.tech@xxxxxxxxx> >>> wrote: >>>> >>>> any reason why naked functions are not support for x86 ? >>> >>> >>> No special reason, no. >>> >>> Ian >>> >> >> Is this something that could easily be moved from target-specific >> attributes into more general gcc support? I'm sure the maintainers of ports >> like the avr that have a "naked" attribute would be happier if it were a >> general feature rather than specific to their port, and I'm sure that other >> embedded targets would appreciate it. >> >> However, I have no clue as to whether this is a simple matter of moving >> code from a target-specific file to a generic file, or if it needs a lot >> more work. >> >> David > > > It's not clear (to me) what the original poster was looking for. If he just > wants to eliminate (or minimize) the prologue and epilogue code he can > sometimes get that effect for simple leaf functions by increasing the > optimization to -O3. But I don't know for sure if that is what he was > asking. I was looking for a way by which functions generated do not have prologue and epilogue. the functions may not be leaf functions. Xin > > --jeff >
