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pa.h (CONST_DOUBLE_OK_FOR_LETTER_P): Generalize. 

* pa.h (CONST_DOUBLE_OK_FOR_LETTER_P): Generalize.
	(LEGITIMATE_CONSTANT_P): Allow 0.0.
	(CONST_COSTS, case CONST_DOUBLE): fp0.0 is free when
	not used in a SET expression.

From-SVN: r3392
This commit is contained in:
Jeff Law 1993-01-30 14:10:07 -07:00
parent f048ca473f
commit af69aabbee
1 changed files with 19 additions and 9 deletions
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28
gcc/config/pa/pa.h
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@ -577,11 +577,15 @@ enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FP_REGS, GENERAL_OR_FP_REGS,
: (C) == 'P' ? and_mask_p (VALUE) \
: 0)
/* Similar, but for floating constants, and defining letters G and H.
Here VALUE is the CONST_DOUBLE rtx itself. */
/* Similar, but for floating or large integer constants, and defining letters
G and H. Here VALUE is the CONST_DOUBLE rtx itself.
#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'G' && XINT (VALUE, 0) == 0 && XINT (VALUE, 1) == 0)
For PA, `G' is the floating-point constant zero. `H' is undefined. */
#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'G' ? (GET_MODE_CLASS (GET_MODE (VALUE)) == MODE_FLOAT \
&& (VALUE) == CONST0_RTX (GET_MODE (VALUE))) \
: 0)
/* Given an rtx X being reloaded into a reg required to be
in class CLASS, return the class of reg to actually use.
@ -1015,11 +1019,13 @@ extern union tree_node *current_function_decl;
#define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
/* Nonzero if the constant value X is a legitimate general operand.
It is given that X satisfies CONSTANT_P. */
#define LEGITIMATE_CONSTANT_P(X) \
(GET_CODE (X) != CONST_DOUBLE)
/* Include all constant integers and constant doubles, but not
floating-point, except for floating-point zero. */
#define LEGITIMATE_CONSTANT_P(X) \
(GET_MODE_CLASS (GET_MODE (X)) != MODE_FLOAT \
|| (X) == CONST0_RTX (GET_MODE (X)))
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
@ -1415,7 +1421,11 @@ while (0)
case SYMBOL_REF: \
return 4; \
case CONST_DOUBLE: \
return 8;
if (RTX == CONST0_RTX (DFmode) || RTX == CONST0_RTX (SFmode)\
&& OUTER_CODE != SET) \
return 0; \
else \
return 8;
#define ADDRESS_COST(RTX) \
(GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))