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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26762 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-03-14 19:31:24 +00:00
parent 4d9b10b098
commit cbd3cdd239
1 changed files with 8 additions and 0 deletions
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8
lib/Target/README.txt
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@ -113,3 +113,11 @@ for 1,2,4,8 bytes.
//===---------------------------------------------------------------------===//
This code:
int rot(unsigned char b) { int a = ((b>>1) ^ (b<<7)) & 0xff; return a; }
Can be improved in two ways:
1. The instcombiner should eliminate the type conversions.
2. The X86 backend should turn this into a rotate by one bit.