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add a note about viterbi

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31612 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-11-10 00:23:26 +00:00
parent 08ff1480ff
commit 578d2df84b
1 changed files with 6 additions and 0 deletions
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6
lib/Target/README.txt
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@ -354,3 +354,9 @@ Instcombine misses several of these cases (see the testcase in the patch):
http://gcc.gnu.org/ml/gcc-patches/2006-10/msg01519.html
//===---------------------------------------------------------------------===//
viterbi speeds up *significantly* if the various "history" related copy loops
are turned into memcpy calls at the source level. We need a "loops to memcpy"
pass.
//===---------------------------------------------------------------------===//