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rs6000.c (mask_constant): Delete.

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* rs6000.c (mask_constant): Delete.
	(mask_operand): Move mask_constant() body to here.
	* rs6000.h (mask_constant): Delete declaration.
	* rs6000.md (nabsdi2): Reverse subtraction in splitter.

From-SVN: r26925
This commit is contained in:
David Edelsohn 1999-05-13 12:38:44 +00:00 committed by David Edelsohn
parent 1b01250dd0
commit 19ba816140
4 changed files with 19 additions and 16 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Thu May 13 15:34:18 1999 David Edelsohn <edelsohn@gnu.org>
* rs6000.c (mask_constant): Delete.
(mask_operand): Move mask_constant() body to here.
* rs6000.h (mask_constant): Delete declaration.
* rs6000.md (nabsdi2): Reverse subtraction in splitter.
Thu May 13 02:25:01 1999 Jeffrey A Law (law@cygnus.com)
* cpp.texi: Fix some typos.

23
gcc/config/rs6000/rs6000.c
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@ -922,19 +922,26 @@ non_logical_cint_operand (op, mode)
&& (INTVAL (op) & (~ (HOST_WIDE_INT) 0xffff0000)) != 0);
}
/* Return 1 if C is a constant that can be encoded in a mask on the
/* Return 1 if C is a constant that can be encoded in a 32-bit mask on the
RS/6000. It is if there are no more than two 1->0 or 0->1 transitions.
Reject all ones and all zeros, since these should have been optimized
away and confuse the making of MB and ME. */
int
mask_constant (c)
register HOST_WIDE_INT c;
mask_operand (op, mode)
register rtx op;
enum machine_mode mode ATTRIBUTE_UNUSED;
{
HOST_WIDE_INT c;
int i;
int last_bit_value;
int transitions = 0;
if (GET_CODE (op) != CONST_INT)
return 0;
c = INTVAL (op);
if (c == 0 || c == ~0)
return 0;
@ -947,16 +954,6 @@ mask_constant (c)
return transitions <= 2;
}
/* Return 1 if the operand is a constant that is a mask on the RS/6000. */
int
mask_operand (op, mode)
register rtx op;
enum machine_mode mode ATTRIBUTE_UNUSED;
{
return GET_CODE (op) == CONST_INT && mask_constant (INTVAL (op));
}
/* Return 1 if the operand is a constant that is a PowerPC64 mask.
It is if there are no more than one 1->0 or 0->1 transitions.
Reject all ones and all zeros, since these should have been optimized

1
gcc/config/rs6000/rs6000.h
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@ -3257,7 +3257,6 @@ extern int add_operand ();
extern int non_add_cint_operand ();
extern int non_logical_cint_operand ();
extern int logical_operand ();
extern int mask_constant ();
extern int mask_operand ();
extern int mask64_operand ();
extern int and64_operand ();

4
gcc/config/rs6000/rs6000.md
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@ -4963,7 +4963,7 @@
(set (match_dup 0) (minus:DI (match_dup 0) (match_dup 2)))]
"")
(define_insn ""
(define_insn "*nabsdi2"
[(set (match_operand:DI 0 "gpc_reg_operand" "=&r,r")
(neg:DI (abs:DI (match_operand:DI 1 "gpc_reg_operand" "r,0"))))
(clobber (match_scratch:DI 2 "=&r,&r"))]
@ -4978,7 +4978,7 @@
"TARGET_POWERPC64 && reload_completed"
[(set (match_dup 2) (ashiftrt:DI (match_dup 1) (const_int 63)))
(set (match_dup 0) (xor:DI (match_dup 2) (match_dup 1)))
(set (match_dup 0) (minus:DI (match_dup 0) (match_dup 2)))]
(set (match_dup 0) (minus:DI (match_dup 2) (match_dup 0)))]
"")
(define_expand "negdi2"