* shrink-wrap.c (requires_stack_frame_p): Fix formatting.
(dup_block_and_redirect): Delete function.
(can_dup_for_shrink_wrapping): New function.
(fix_fake_fallthrough_edge): New function.
(try_shrink_wrapping): Rewrite function.
(convert_to_simple_r
On 09/11/2015 05:40 PM, Segher Boessenkool wrote:
Another issue I saw for PowerPC that prevented shrink-wrapping was the
>case where non-volatile CR's are used somewhere in the function. This
>causes a 'mfcr' to be generated in the prolog to save the non-volatile
>CR's, which currently lists all
On Fri, Sep 11, 2015 at 05:06:47PM -0500, Pat Haugen wrote:
> On 09/11/2015 02:49 PM, Segher Boessenkool wrote:
> >On PowerPC, this enables shrink-wrapping of about 2%-3% more functions.
> >I expected more, but in most cases this would help we cannot yet shrink-
> >wrap because there are non-volati
On 09/11/2015 02:49 PM, Segher Boessenkool wrote:
On PowerPC, this enables shrink-wrapping of about 2%-3% more functions.
I expected more, but in most cases this would help we cannot yet shrink-
wrap because there are non-volatile registers used, often in the first
block already.
I looked into sh
[ v2: patch adjusted after Bernd's comments ]
This patch rewrites the shrink-wrapping algorithm, allowing non-linear
pieces of CFG to be duplicated for use without prologue instead of just
linear pieces.
On PowerPC, this enables shrink-wrapping of about 2%-3% more functions.
I expected more, but
