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pa.h (FP_REG_CLASS_P): New macro.

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* pa.h (FP_REG_CLASS_P): New macro.
	(REGISTER_MOVE_COST): Use FP_REG_CLASS_P to simplify.  Make
	copies from the SAR so expensive that they should never happen.

From-SVN: r3259
This commit is contained in:
Jeff Law 1993-01-17 11:07:59 -07:00
parent f133af4c91
commit 5de7c240a0
1 changed files with 16 additions and 9 deletions
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25
gcc/config/pa/pa.h
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@ -561,6 +561,9 @@ enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FP_REGS, GENERAL_OR_FP_REGS,
#define INDEX_REG_CLASS GENERAL_REGS
#define BASE_REG_CLASS GENERAL_REGS
#define FP_REG_CLASS_P(CLASS) \
(CLASS == FP_REGS || CLASS == SNAKE_FP_REGS || CLASS == HI_SNAKE_FP_REGS)
/* Get reg_class from a letter such as appears in the machine description. */
#define REG_CLASS_FROM_LETTER(C) \
@ -1479,16 +1482,20 @@ while (0)
(GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))
/* Compute extra cost of moving data between one register class
and another. */
and another.
Make moves from SAR so expensive they should never happen.
Copies involving a FP register and a non-FP register are relatively
expensive because they must go through memory.
Other copies are reasonably cheap. */
#define REGISTER_MOVE_COST(CLASS1, CLASS2) \
((((CLASS1 == FP_REGS || CLASS1 == SNAKE_FP_REGS \
|| CLASS1 == HI_SNAKE_FP_REGS) \
&& (CLASS2 == R1_REGS || CLASS2 == GENERAL_REGS \
|| CLASS2 == SHIFT_REGS)) \
|| ((CLASS1 == R1_REGS || CLASS1 == GENERAL_REGS \
|| CLASS1 == SHIFT_REGS) \
&& (CLASS2 == FP_REGS || CLASS2 == SNAKE_FP_REGS \
|| CLASS2 == HI_SNAKE_FP_REGS))) ? 16 : 2)
(CLASS1 == SHIFT_REGS ? 0xffff \
: FP_REG_CLASS_P (CLASS1) && ! FP_REG_CLASS_P (CLASS2) ? 16 \
: FP_REG_CLASS_P (CLASS2) && ! FP_REG_CLASS_P (CLASS1) ? 16 \
: 2)
/* Provide the costs of a rtl expression. This is in the body of a
switch on CODE. The purpose for the cost of MULT is to encourage