------- Comment #4 from vvv at ru dot ru 2009-05-25 19:54 ------- (In reply to comment #2) > This is very odd? What is the assembler doing that the compiler isn't?
There are exist some optimizations impossible without exact knowledge of address and opcodes, One example avoiding of branch mispredicts - http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39942 Other example - Ensure instructions using 0xF7 opcode byte does not start at offset 14 of a fetch line... Unfortunately, current version GNU AS cat't do this optimizations. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40171
