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Re: stormy16: limit SI reload regs
> I'm trying a variant now where we set the reload preference to
> SEVEN_REGS but the constraint to EIGHT_REGS.
Ok, this patch works with some tests now passing and no regressions:
2003-04-30 DJ Delorie <dj@redhat.com>
* config/stormy16/stormy16.h: Add SEVEN_REGS class.
* config/stormy16/stormy16.c (xstormy16_secondary_reload_class): Use it.
(xstormy16_preferred_reload_class): Use it.
Index: stormy16.c
===================================================================
RCS file: /cvs/uberbaum/gcc/config/stormy16/stormy16.c,v
retrieving revision 1.38
diff -p -2 -r1.38 stormy16.c
*** stormy16.c 17 Apr 2003 10:35:08 -0000 1.38
--- stormy16.c 30 Apr 2003 19:26:57 -0000
*************** xstormy16_secondary_reload_class (class,
*** 524,528 ****
|| true_regnum (x) >= FIRST_PSEUDO_REGISTER)))
&& ! reg_class_subset_p (class, EIGHT_REGS))
! return EIGHT_REGS;
/* When reloading a PLUS, the carry register will be required
--- 524,528 ----
|| true_regnum (x) >= FIRST_PSEUDO_REGISTER)))
&& ! reg_class_subset_p (class, EIGHT_REGS))
! return GET_MODE (x) == SImode ? SEVEN_REGS : EIGHT_REGS;
/* When reloading a PLUS, the carry register will be required
*************** xstormy16_preferred_reload_class (x, cla
*** 576,580 ****
if (class == GENERAL_REGS
&& GET_CODE (x) == MEM)
! return EIGHT_REGS;
return class;
--- 576,580 ----
if (class == GENERAL_REGS
&& GET_CODE (x) == MEM)
! return GET_MODE (x) == SImode ? SEVEN_REGS : EIGHT_REGS;
return class;
Index: stormy16.h
===================================================================
RCS file: /cvs/uberbaum/gcc/config/stormy16/stormy16.h,v
retrieving revision 1.73
diff -p -2 -r1.73 stormy16.h
*** stormy16.h 17 Apr 2003 10:35:08 -0000 1.73
--- stormy16.h 30 Apr 2003 19:26:58 -0000
*************** enum reg_class
*** 405,408 ****
--- 405,409 ----
TWO_REGS,
R2_REGS,
+ SEVEN_REGS,
EIGHT_REGS,
R8_REGS,
*************** enum reg_class
*** 428,431 ****
--- 429,433 ----
"TWO_REGS", \
"R2_REGS", \
+ "SEVEN_REGS", \
"EIGHT_REGS", \
"R8_REGS", \
*************** enum reg_class
*** 453,456 ****
--- 455,459 ----
{ 0x00003 }, \
{ 0x00004 }, \
+ { 0x0007F }, \
{ 0x000FF }, \
{ 0x00100 }, \
*************** enum reg_class
*** 468,471 ****
--- 471,475 ----
: (REGNO) == 1 ? R1_REGS \
: (REGNO) == 2 ? R2_REGS \
+ : (REGNO) < 7 ? SEVEN_REGS \
: (REGNO) < 8 ? EIGHT_REGS \
: (REGNO) == 8 ? R8_REGS \