diff options
Diffstat (limited to 'mpn/x86/k7/addlsh1_n.asm')
| -rw-r--r-- | mpn/x86/k7/addlsh1_n.asm | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mpn/x86/k7/addlsh1_n.asm b/mpn/x86/k7/addlsh1_n.asm index e5163b676..05df4a740 100644 --- a/mpn/x86/k7/addlsh1_n.asm +++ b/mpn/x86/k7/addlsh1_n.asm @@ -44,14 +44,14 @@ C AMD K8 C This is a basic addlsh1_n for k7, atom, and perhaps some other x86-32 C processors. It uses 2*3-way unrolling, for good reasons. Unfortunately, C that means we need an initial magic multiply. -C +C C It is not clear how to do sublsh1_n or rsblsh1_n using the same pattern. We C cannot do rsblsh1_n since we feed carry from the shift blocks to the C add/subtract blocks, which is right for addition but reversed for C subtraction. We could perhaps do sublsh1_n, with some extra move insns, C without losing any time, since we're not issue limited but carry recurrency C latency. -C +C C Breaking carry recurrency might be a good idea. We would then need separate C registers for the shift carry and add/subtract carry, which in turn would C force is to 2*2-way unrolling. @@ -120,7 +120,7 @@ ifdef(`CPU_P6',` L(exact): incl VAR_COUNT jz L(end) - + ALIGN(16) L(top): ifdef(`CPU_P6',` |