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| author | David Edelsohn <edelsohn@gnu.org> | 2003-02-08 01:51:26 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 2003-02-07 20:51:26 -0500 |
| commit | d865b1226d3edfe48b70f79e3910dc90a9429ad8 (patch) | |
| tree | e9e3154deacd6fdad9457a861d384badab2e3afd /gcc | |
| parent | 8f37dd984b5783b5566836ccba59f6e71527d564 (diff) | |
| download | gcc-d865b1226d3edfe48b70f79e3910dc90a9429ad8.zip gcc-d865b1226d3edfe48b70f79e3910dc90a9429ad8.tar.gz gcc-d865b1226d3edfe48b70f79e3910dc90a9429ad8.tar.bz2 | |
rs6000.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.
* 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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.h | 4 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 12 |
3 files changed, 18 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3c3bc7e..92e0d2b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h index 7cfb3cc..31c88a0 100644 --- a/gcc/config/rs6000/rs6000.h +++ b/gcc/config/rs6000/rs6000.h @@ -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. */ diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 6af6bee..e4a17cf 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -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") |