[LLVMdev] detailed comparison of generated code size for LLVM and other compilers
anton at korobeynikov.info
Mon Dec 14 13:54:16 PST 2009
> You'll probably need to some digging to make sure the defaults are
> exactly comparable. Are SSE and/or MMX used? This affects floating
> point codegen quite a bit. Are the target CPUs the same?
I saw in some tests the difference of the size was caused by different
defaults for FP codegen - x87 math or sse2.
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University
More information about the llvm-dev