On Tue, Jun 30, 2015 at 02:16:19PM +0930, Alan Modra wrote:
On Mon, Jun 29, 2015 at 09:34:40AM -0500, Segher Boessenkool wrote:
On Mon, Jun 29, 2015 at 05:16:39PM +0930, Alan Modra wrote:
Note that we already have insn_rtx_cost, and it returns a minimum cost
for a SET, so register move
On Mon, Jun 29, 2015 at 05:16:39PM +0930, Alan Modra wrote:
Note that we already have insn_rtx_cost, and it returns a minimum cost
for a SET, so register move insns get a cost of 1 insn. However,
despite insn_rtx_cost starting life in combine.c, even combine doesn't
use it in all whole insn
On Thu, Jun 25, 2015 at 01:28:39PM +0100, Richard Earnshaw wrote:
Perhaps the best thing to do is to use the OUTER code to spot the
specific case where you've got a SET and return non-zero in that case.
That's exactly the path I've been following. It's not as easy as it
sounds..
First, some
On 29 Jun 2015, at 16:46, Alan Modra amo...@gmail.com wrote:
On Thu, Jun 25, 2015 at 01:28:39PM +0100, Richard Earnshaw wrote:
Perhaps the best thing to do is to use the OUTER code to spot the
specific case where you've got a SET and return non-zero in that case.
That's exactly the path
On Mon, Jun 29, 2015 at 09:34:40AM -0500, Segher Boessenkool wrote:
On Mon, Jun 29, 2015 at 05:16:39PM +0930, Alan Modra wrote:
Note that we already have insn_rtx_cost, and it returns a minimum cost
for a SET, so register move insns get a cost of 1 insn. However,
despite insn_rtx_cost
