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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42656 91177308-0d34-0410-b5e6-96231b3b80d8
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Evan Cheng 2007-10-05 22:34:59 +00:00
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4
lib/Target/X86/README.txt
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@ -290,10 +290,6 @@ It would be better to emit "cmp %al, 1" than a xor and test.
//===---------------------------------------------------------------------===//
Enable X86InstrInfo::convertToThreeAddress().
//===---------------------------------------------------------------------===//
We are currently lowering large (1MB+) memmove/memcpy to rep/stosl and rep/movsl
We should leave these as libcalls for everything over a much lower threshold,
since libc is hand tuned for medium and large mem ops (avoiding RFO for large