Changes in directory llvm/lib/Target:
README.txt updated: 1.20 -> 1.21 --- Log message: add a note --- Diffs of the changes: (+8 -0) README.txt | 8 ++++++++ 1 files changed, 8 insertions(+) Index: llvm/lib/Target/README.txt diff -u llvm/lib/Target/README.txt:1.20 llvm/lib/Target/README.txt:1.21 --- llvm/lib/Target/README.txt:1.20 Tue Mar 14 00:57:34 2006 +++ llvm/lib/Target/README.txt Tue Mar 14 13:31:24 2006 @@ -113,3 +113,11 @@ //===---------------------------------------------------------------------===// +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. + _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits