> I was compiling LZMA SDK (http://www.7-zip.org/, LzmaDecode.c) and just > for curiosity I looked at output assembler. I noted that when PIC is > enabled (-fpic, Linux Intel) ebx is reserved to global pointer. However > LzmaDecode do not access any global data and do not call other functions > (no relocations at all) so why not use ebx register? -fpic make compiler > just not use ebx. I tried using different versions (gcc 3.4.4 from > Fedora Core 3 and 4.0.2 from Fedora Core 4) with same result. >
I just tried same test with gcc 4.2.0 20051231 with same behavior. Frediano Ziglio
