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| author | Uros Bizjak <ubizjak@gmail.com> | 2007-05-18 22:14:31 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2007-05-18 22:14:31 +0200 |
| commit | e7e0aaeca8ab3390677fa3a950504c93d75c2060 (patch) | |
| tree | cc31f94616ff65d8a33f7b6997c826eb83304d8e /gcc | |
| parent | b86448d7eabbebee7b24e07d2bc8d05edcec04ab (diff) | |
| download | gcc-e7e0aaeca8ab3390677fa3a950504c93d75c2060.zip gcc-e7e0aaeca8ab3390677fa3a950504c93d75c2060.tar.gz gcc-e7e0aaeca8ab3390677fa3a950504c93d75c2060.tar.bz2 | |
longlong.h (__x86_64__): Add definitions for add_ssaaaa...
* longlong.h (__x86_64__): Add definitions for add_ssaaaa,
sub_ddmmss, umul_ppmm, udiv_qrnnd, count_leading_zeros and
count_trailing_zeros.
(__i386__): Implement count_leading_zeros using __builtin_clz().
Implement count_trailing_zeros usign __builtin_ctz().
From-SVN: r124832
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/longlong.h | 47 |
2 files changed, 46 insertions, 9 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f24184b..e0c6b5f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2007-05-18 Uros Bizjak <ubizjak@gmail.com> + + * longlong.h (__x86_64__): Add definitions for add_ssaaaa, + sub_ddmmss, umul_ppmm, udiv_qrnnd, count_leading_zeros and + count_trailing_zeros. + (__i386__): Implement count_leading_zeros using __builtin_clz(). + Implement count_trailing_zeros usign __builtin_ctz(). + 2007-05-18 Richard Sandiford <richard@codesourcery.com> * config/i386/vxworks.h (ASM_PREFERRED_EH_DATA_FORMAT): Undefine. diff --git a/gcc/longlong.h b/gcc/longlong.h index 8b512d2..b96e8bb 100644 --- a/gcc/longlong.h +++ b/gcc/longlong.h @@ -341,19 +341,48 @@ UDItype __umulsidi3 (USItype, USItype); : "0" ((USItype) (n0)), \ "1" ((USItype) (n1)), \ "rm" ((USItype) (dv))) -#define count_leading_zeros(count, x) \ - do { \ - USItype __cbtmp; \ - __asm__ ("bsrl %1,%0" \ - : "=r" (__cbtmp) : "rm" ((USItype) (x))); \ - (count) = __cbtmp ^ 31; \ - } while (0) -#define count_trailing_zeros(count, x) \ - __asm__ ("bsfl %1,%0" : "=r" (count) : "rm" ((USItype)(x))) +#define count_leading_zeros(count, x) ((count) = __builtin_clz (x)) +#define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x)) #define UMUL_TIME 40 #define UDIV_TIME 40 #endif /* 80x86 */ +#if (defined (__x86_64__) || defined (__i386__)) && W_TYPE_SIZE == 64 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addq %5,%1\n\tadcq %3,%0" \ + : "=r" ((UDItype) (sh)), \ + "=&r" ((UDItype) (sl)) \ + : "%0" ((UDItype) (ah)), \ + "rme" ((UDItype) (bh)), \ + "%1" ((UDItype) (al)), \ + "rme" ((UDItype) (bl))) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subq %5,%1\n\tsbbq %3,%0" \ + : "=r" ((UDItype) (sh)), \ + "=&r" ((UDItype) (sl)) \ + : "0" ((UDItype) (ah)), \ + "rme" ((UDItype) (bh)), \ + "1" ((UDItype) (al)), \ + "rme" ((UDItype) (bl))) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulq %3" \ + : "=a" ((UDItype) (w0)), \ + "=d" ((UDItype) (w1)) \ + : "%0" ((UDItype) (u)), \ + "rm" ((UDItype) (v))) +#define udiv_qrnnd(q, r, n1, n0, dv) \ + __asm__ ("divq %4" \ + : "=a" ((UDItype) (q)), \ + "=d" ((UDItype) (r)) \ + : "0" ((UDItype) (n0)), \ + "1" ((UDItype) (n1)), \ + "rm" ((UDItype) (dv))) +#define count_leading_zeros(count, x) ((count) = __builtin_clzl (x)) +#define count_trailing_zeros(count, x) ((count) = __builtin_ctzl (x)) +#define UMUL_TIME 40 +#define UDIV_TIME 40 +#endif /* x86_64 */ + #if defined (__i960__) && W_TYPE_SIZE == 32 #define umul_ppmm(w1, w0, u, v) \ ({union {UDItype __ll; \ |