On 07/01/2015 01:43 PM, Jakub Jelinek wrote:
On Wed, Jul 01, 2015 at 01:35:16PM -0400, Vladimir Makarov wrote:
Actually it raise a question for me. If we describe that a function
clobbers more than calling convention and then use it as a value (assigning
a variable or passing as an argument
On 07/01/2015 11:27 AM, Andy Lutomirski wrote:
On Wed, Jul 1, 2015 at 8:23 AM, Vladimir Makarov wrote:
On 06/30/2015 05:37 PM, Jakub Jelinek wrote:
On Tue, Jun 30, 2015 at 02:22:33PM -0700, Andy Lutomirski wrote:
I'm working on a massive set of cleanups to Linux's syscall ha
On 07/01/2015 11:31 AM, Jakub Jelinek wrote:
On Wed, Jul 01, 2015 at 11:23:17AM -0400, Vladimir Makarov wrote:
(I'm not necessarily suggesting that we do this for the syscall bodies
themselves. I want to do it for the entry and exit helpers, so we'd
still lose the five cycles i
On 06/30/2015 05:37 PM, Jakub Jelinek wrote:
On Tue, Jun 30, 2015 at 02:22:33PM -0700, Andy Lutomirski wrote:
I'm working on a massive set of cleanups to Linux's syscall handling.
We currently have a nasty optimization in which we don't save rbx,
rbp, r12, r13, r14, and r15 on x86_64 before ca
On 02/05/15 08:43 AM, Peter Zijlstra wrote:
On Fri, May 01, 2015 at 03:02:24PM -0400, Vladimir Makarov wrote:
Currently LRA is used by x86/x86-64, ARM, AARCH64, s390, and MIPS.
PPC, SH, and ARC are moving to LRA. All other targets are still
reload based.
So I could implement the
On 01/05/15 04:49 PM, Linus Torvalds wrote:
On Fri, May 1, 2015 at 12:02 PM, Vladimir Makarov wrote:
GCC RA is a major reason to prohibit output operands for asm goto.
Hmm.. Thinking some more about it, I think that what would actually
work really well at least for the kernel is:
(a
On 01/05/15 12:33 PM, Jakub Jelinek wrote:
On Fri, May 01, 2015 at 09:03:32AM -0700, Linus Torvalds wrote:
PPS. Jakub, I see gcc5.1 still hasn't got output operands for asm goto;
is this something we can get 'fixed' ?
CCing Richard as author of asm goto and Vlad as register allocator
ma
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