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| -rw-r--r-- | doc/tasks.html | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/tasks.html b/doc/tasks.html index 44913eb71..955cb51f0 100644 --- a/doc/tasks.html +++ b/doc/tasks.html @@ -265,6 +265,9 @@ as <code>mpn_lshift</code>. Some judicious use of m4 might let the two share source code, or with a register to control the loop direction perhaps even share object code. +<li> PPC630: <code>mpn_lshift</code> could use an <code>adde</code> for a + shift-by-1. A simple loop seems to be about 1.4 c/l, compared to 1.6 for + the unrolled general case. <li> Implement <code>mpn_mul_basecase</code> and <code>mpn_sqr_basecase</code> for important machines. Helping the generic sqr_basecase.c with an <code>mpn_sqr_diagonal</code> might be enough for some of the RISCs. |