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[SystemZ] Update README

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We now use MVST, CLST and SRST for the obvious cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188781 91177308-0d34-0410-b5e6-96231b3b80d8
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Richard Sandiford 2013-08-20 09:40:35 +00:00
parent 8c20158fb0
commit 0371d01fb9
1 changed files with 2 additions and 4 deletions
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lib/Target/SystemZ/README.txt
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@ -73,10 +73,8 @@ Likewise memcmp and CLC. MVCLE and CLCLE could be useful too.
--
We don't optimize string operations.
MVST, CLST, SRST and CUSE could be useful here. Some of the TRANSLATE
family might be too, although they are probably more difficult to exploit.
We don't use CUSE or the TRANSLATE family of instructions for string
operations. The TRANSLATE ones are probably more difficult to exploit.
--