------- Comment #9 from hjl at lucon dot org 2007-10-03 22:17 ------- (In reply to comment #8) > Subject: Re: attribute((aligned)) doesn't work for variables on the stack for > greater than required alignement > > On 3 Oct 2007 22:04:28 -0000, hjl at lucon dot org > <[EMAIL PROTECTED]> wrote: > > > > > > ------- Comment #7 from hjl at lucon dot org 2007-10-03 22:04 ------- > > What is the performance impact of > > > > http://gcc.gnu.org/ml/gcc-patches/2007-05/msg01167.html > > The performance impact is non if the variables don't need aligned. > Otherwise you get a small penality at the very begining for the > alignment of the variable itself. Really this is only to be used with > big alignments like 128byte alignment (for using with a DMA system > like in the Cell). >
What is the performance if the stack alignment adjustment is required in all functions with floating point variables on stack? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16660
