On Mon, Jul 06, 2015 at 04:58:36PM -0500, Segher Boessenkool wrote:
On Mon, Jul 06, 2015 at 04:45:35PM -0400, DJ Delorie wrote:
Combine gets as far as this:
Trying 5 - 9:
Failed to match this instruction:
(parallel [
(set (mem/v/j:QI (const_int 240 [0xf0]) [0 MEM[(volatile
On 07/01/2015 10:14 PM, DJ Delorie wrote:
In this bit of code in explow.c:
/* By passing constant addresses through registers
we get a chance to cse them. */
if (! cse_not_expected CONSTANT_P (x) CONSTANT_ADDRESS_P (x))
x = force_reg (address_mode, x);
On the rl78 it
Given a test case like this:
typedef struct {
unsigned char no0 :1;
unsigned char no1 :1;
unsigned char no2 :1;
unsigned char no3 :1;
unsigned char no4 :1;
unsigned char no5 :1;
unsigned char no6 :1;
unsigned char no7 :1;
} __BITS8;
#define
On Mon, Jul 06, 2015 at 04:45:35PM -0400, DJ Delorie wrote:
Combine gets as far as this:
Trying 5 - 9:
Failed to match this instruction:
(parallel [
(set (mem/v/j:QI (const_int 240 [0xf0]) [0 MEM[(volatile union
un_per0 *)240B].BIT.no4+0 S1 A16])
(ior:QI (mem/v/j:QI
Did you try just a define_split instead? Ugly, but it should work I think.
It doesn't seem to be able to match a define_split :-(
In this bit of code in explow.c:
/* By passing constant addresses through registers
we get a chance to cse them. */
if (! cse_not_expected CONSTANT_P (x) CONSTANT_ADDRESS_P (x))
x = force_reg (address_mode, x);
On the rl78 it results in code that's a bit too complex for later
