On Mon, Apr 19, 2010 at 5:54 PM, Jeff Law l...@redhat.com wrote:
combine requires a data dependency, so for this situation, combine isn't
going to help. The easy solution is to create a peephole. You can also
create a machine dependent reorg pass to detect more of these opportunities.
Hi Ian,
On Wed, Apr 21, 2010 at 5:42 PM, Ian Lance Taylor i...@google.com wrote:
Frank Isamov frank.isa...@gmail.com writes:
2. A peephole for such case just repeats instruction definition
pattern. As all information already available for such peephole,
wouldn’t it be useful to implement
Hi,
My architecture supports instructions with two parallel side effects.
For example, addition and subtraction can be done in parallel:
(define_insn assi6
[(parallel [
(set (match_operand:SI 0 register_operand =r)
(minus:SI (match_operand:SI 1 register_operand r)
Hi,
In my backend, I have a problem with the pass which determines the
best register class for a virtual register (Pass 0 for finding allocno
costs).
In all insns in this example both R_REGS and D_REGS register classes
are applicable (but all registers in an insn should be from the same
register
-- Forwarded message --
From: Frank Isamov frank.isa...@gmail.com
Date: Thu, Mar 18, 2010 at 4:28 PM
Subject: Re: Coloring problem - Pass 0 for finding allocno costs
To: Ian Bolton bol...@icerasemi.com
On Thu, Mar 18, 2010 at 3:51 PM, Ian Bolton bol...@icerasemi.com wrote
We have a problem with arguments passing in memory.
The caller puts the arguments in memory relative to the sp:
add sp, 4 // allocate space for the argument. stack grows up
store r1, (sp-4) // store the argument on the stack
call xxx// call the function.
In xxx the result
On Mon, Mar 8, 2010 at 8:29 AM, Joern Rennecke
joern.renne...@embecosm.com wrote:
Quoting Frank Isamov frank.isa...@gmail.com:
Hi,
I'd like to make a backend which would have 48 bits for 'long' type.
(32 for int and 64 for long long).
I have tried to define:
#define LONG_TYPE_SIZE 48
On Mon, Mar 8, 2010 at 4:27 PM, Frank Isamov frank.isa...@gmail.com wrote:
On Mon, Mar 8, 2010 at 8:29 AM, Joern Rennecke
joern.renne...@embecosm.com wrote:
Quoting Frank Isamov frank.isa...@gmail.com:
Hi,
I'd like to make a backend which would have 48 bits for 'long' type.
(32 for int
Hi,
I'd like to make a backend which would have 48 bits for 'long' type.
(32 for int and 64 for long long).
I have tried to define:
#define LONG_TYPE_SIZE 48
and one of:
INT_MODE (PDI, 6);
PARTIAL_INT_MODE (DI);
Unfortunately, trying to compile a program, I see that the backend
still uses
