diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/libgcc2.c | 10 |
2 files changed, 9 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dfafdec..17553a3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-02-04 Richard Henderson <rth@redhat.com> + + * libgcc2.c (__paritysi2, __paritydi2): Replace last two reduction + rounds with a "bit table" lookup. + 2003-02-04 Ulrich Weigand <uweigand@de.ibm.com> * reload.c (find_reloads): Do not use the mode specified in the insn diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c index a6eb1f0..2801681 100644 --- a/gcc/libgcc2.c +++ b/gcc/libgcc2.c @@ -664,9 +664,8 @@ __paritysi2 (USItype x) nx ^= nx >> 16; nx ^= nx >> 8; nx ^= nx >> 4; - nx ^= nx >> 2; - nx ^= nx >> 1; - return nx & 1; + nx &= 0xf; + return (0x6996 >> nx) & 1; } #endif @@ -680,9 +679,8 @@ __paritydi2 (UDItype x) nx ^= nx >> 16; nx ^= nx >> 8; nx ^= nx >> 4; - nx ^= nx >> 2; - nx ^= nx >> 1; - return nx & 1; + nx &= 0xf; + return (0x6996 >> nx) & 1; } #endif |