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mips.c (true_reg_or_0_operand): New function. 

* config/mips/mips.c (true_reg_or_0_operand) : New function.
	* config/mips/mips.h (PREDICATE_CODES): Add true_reg_or_0_operand.
	* config/mips/mips.md (div_trap,div_trap_normal,div_trap_mips16):
	Use true_reg_or_0_operand for div_trap.

From-SVN: r25008
This commit is contained in:
Gavin Romig-Koch 1999-02-03 13:04:22 +00:00 committed by Gavin Romig-Koch
parent 4d87f7a77c
commit def72bd2e9
4 changed files with 41 additions and 5 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Wed Feb 3 15:51:04 1999 Gavin Romig-Koch <gavin@cygnus.com>
* config/mips/mips.c (true_reg_or_0_operand) : New function.
* config/mips/mips.h (PREDICATE_CODES): Add true_reg_or_0_operand.
* config/mips/mips.md (div_trap,div_trap_normal,div_trap_mips16):
Use true_reg_or_0_operand for div_trap.
Wed Feb 3 20:44:59 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* loop.h (express_from): Declare.

27
gcc/config/mips/mips.c
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@ -543,6 +543,33 @@ reg_or_0_operand (op, mode)
return 0;
}
/* Return truth value of whether OP is a register or the constant 0,
even in mips16 mode. */
int
true_reg_or_0_operand (op, mode)
rtx op;
enum machine_mode mode;
{
switch (GET_CODE (op))
{
case CONST_INT:
return INTVAL (op) == 0;
case CONST_DOUBLE:
return op == CONST0_RTX (mode);
case REG:
case SUBREG:
return register_operand (op, mode);
default:
break;
}
return 0;
}
/* Return truth value if a CONST_DOUBLE is ok to be a legitimate constant. */
int

6
gcc/config/mips/mips.h
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@ -226,6 +226,7 @@ extern void print_operand_address ();
extern void print_operand ();
extern void print_options ();
extern int reg_or_0_operand ();
extern int true_reg_or_0_operand ();
extern int simple_epilogue_p ();
extern int simple_memory_operand ();
extern int double_memory_operand ();
@ -3697,7 +3698,8 @@ while (0)
{"uns_arith_operand", { REG, CONST_INT, SUBREG }}, \
{"arith_operand", { REG, CONST_INT, SUBREG }}, \
{"arith32_operand", { REG, CONST_INT, SUBREG }}, \
{"reg_or_0_operand", { REG, CONST_INT, SUBREG }}, \
{"reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG }}, \
{"true_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG }}, \
{"small_int", { CONST_INT }}, \
{"large_int", { CONST_INT }}, \
{"mips_const_double_ok", { CONST_DOUBLE }}, \
@ -3715,7 +3717,7 @@ while (0)
SYMBOL_REF, LABEL_REF, SUBREG, REG, \
MEM, SIGN_EXTEND }}, \
{"se_register_operand", { SUBREG, REG, SIGN_EXTEND }}, \
{"se_reg_or_0_operand", { REG, CONST_INT, SUBREG, \
{"se_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, \
SIGN_EXTEND }}, \
{"se_uns_arith_operand", { REG, CONST_INT, SUBREG, \
SIGN_EXTEND }}, \

6
gcc/config/mips/mips.md
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@ -2414,7 +2414,7 @@
(define_expand "div_trap"
[(trap_if (eq (match_operand 0 "register_operand" "d")
(match_operand 1 "reg_or_0_operand" "dJ"))
(match_operand 1 "true_reg_or_0_operand" "dJ"))
(match_operand 2 "immediate_operand" ""))]
""
"
@ -2428,7 +2428,7 @@
(define_insn "div_trap_normal"
[(trap_if (eq (match_operand 0 "register_operand" "d")
(match_operand 1 "reg_or_0_operand" "dJ"))
(match_operand 1 "true_reg_or_0_operand" "dJ"))
(match_operand 2 "immediate_operand" ""))]
"!TARGET_MIPS16"
"*
@ -2471,7 +2471,7 @@
(define_insn "div_trap_mips16"
[(trap_if (eq (match_operand 0 "register_operand" "d")
(match_operand 1 "reg_or_0_operand" "dJ"))
(match_operand 1 "true_reg_or_0_operand" "dJ"))
(match_operand 2 "immediate_operand" ""))
(clobber (reg:SI 24))]
"TARGET_MIPS16"