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rs6000.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.

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* config/rs6000/rs6000.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
        * config/rs6000/rs6000.md (clzsi2): Rename from cntlzw2.
        (ffssi2): Use clz instead of unspec.
        (clzdi2): Rename from cntlzd2.
        (ffsdi2): Use clz instead of unspec.

From-SVN: r62570
This commit is contained in:
David Edelsohn 2003-02-08 01:51:26 +00:00 committed by David Edelsohn
parent 8f37dd984b
commit d865b1226d
3 changed files with 18 additions and 6 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2003-02-07 David Edelsohn <edelsohn@gnu.org>
* config/rs6000/rs6000.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
* config/rs6000/rs6000.md (clzsi2): Rename from cntlzw2.
(ffssi2): Use clz instead of unspec.
(clzdi2): Rename from cntlzd2.
(ffsdi2): Use clz instead of unspec.
2003-02-07 Loren James Rittle <ljrittle@acm.org>
* config/alpha/freebsd.h (LINK_SPEC): Weaken error to notice.

4
gcc/config/rs6000/rs6000.h
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@ -2270,6 +2270,10 @@ do { \
is done just by pretending it is already truncated. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
/* The cntlzw and cntlzd instructions return 32 and 64 for zero. */
#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \
((VALUE) = ((MODE) == SImode ? 32 : 64))
/* Specify the machine mode that pointers have.
After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */

12
gcc/config/rs6000/rs6000.md
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@ -2371,7 +2371,7 @@
(parallel [(set (match_dup 3) (and:SI (match_dup 1)
(match_dup 2)))
(clobber (scratch:CC))])
(set (match_dup 4) (unspec:SI [(match_dup 3)] 21))
(set (match_dup 4) (clz:SI (match_dup 3)))
(set (match_operand:SI 0 "gpc_reg_operand" "=r")
(minus:SI (const_int 32) (match_dup 4)))]
""
@ -2381,9 +2381,9 @@
operands[4] = gen_reg_rtx (SImode);
})
(define_insn "cntlzw2"
(define_insn "clzsi2"
[(set (match_operand:SI 0 "gpc_reg_operand" "=r")
(unspec:SI [(match_operand:SI 1 "gpc_reg_operand" "r")] 21))]
(clz:SI (match_operand:SI 1 "gpc_reg_operand" "r")))]
""
"{cntlz|cntlzw} %0,%1")
@ -6746,7 +6746,7 @@
(parallel [(set (match_dup 3) (and:DI (match_dup 1)
(match_dup 2)))
(clobber (scratch:CC))])
(set (match_dup 4) (unspec:DI [(match_dup 3)] 21))
(set (match_dup 4) (clz:DI (match_dup 3)))
(set (match_operand:DI 0 "gpc_reg_operand" "=r")
(minus:DI (const_int 64) (match_dup 4)))]
"TARGET_POWERPC64"
@ -6756,9 +6756,9 @@
operands[4] = gen_reg_rtx (DImode);
})
(define_insn "cntlzd2"
(define_insn "clzdi2"
[(set (match_operand:DI 0 "gpc_reg_operand" "=r")
(unspec:DI [(match_operand:DI 1 "gpc_reg_operand" "r")] 21))]
(clz:DI (match_operand:DI 1 "gpc_reg_operand" "r")))]
"TARGET_POWERPC64"
"cntlzd %0,%1")