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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> 2003-02-07 Loren James Rittle <ljrittle@acm.org>
* config/alpha/freebsd.h (LINK_SPEC): Weaken error to notice. * 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. */ is done just by pretending it is already truncated. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 #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. /* Specify the machine mode that pointers have.
After generation of rtl, the compiler makes no further distinction After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */ 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) (parallel [(set (match_dup 3) (and:SI (match_dup 1)
(match_dup 2))) (match_dup 2)))
(clobber (scratch:CC))]) (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") (set (match_operand:SI 0 "gpc_reg_operand" "=r")
(minus:SI (const_int 32) (match_dup 4)))] (minus:SI (const_int 32) (match_dup 4)))]
"" ""
@ -2381,9 +2381,9 @@
operands[4] = gen_reg_rtx (SImode); operands[4] = gen_reg_rtx (SImode);
}) })
(define_insn "cntlzw2" (define_insn "clzsi2"
[(set (match_operand:SI 0 "gpc_reg_operand" "=r") [(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") "{cntlz|cntlzw} %0,%1")
@ -6746,7 +6746,7 @@
(parallel [(set (match_dup 3) (and:DI (match_dup 1) (parallel [(set (match_dup 3) (and:DI (match_dup 1)
(match_dup 2))) (match_dup 2)))
(clobber (scratch:CC))]) (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") (set (match_operand:DI 0 "gpc_reg_operand" "=r")
(minus:DI (const_int 64) (match_dup 4)))] (minus:DI (const_int 64) (match_dup 4)))]
"TARGET_POWERPC64" "TARGET_POWERPC64"
@ -6756,9 +6756,9 @@
operands[4] = gen_reg_rtx (DImode); operands[4] = gen_reg_rtx (DImode);
}) })
(define_insn "cntlzd2" (define_insn "clzdi2"
[(set (match_operand:DI 0 "gpc_reg_operand" "=r") [(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" "TARGET_POWERPC64"
"cntlzd %0,%1") "cntlzd %0,%1")