Christopher Thompson writes:
> -O0: fails compile
> -O1: 7 min 22 s --> 807594 bytes
> -O2: 8 min 38 s --> 830397 bytes
> -O3: 8 min 55 s --> 869151 bytes
> -Os: 8 min 36 s --> 819874 bytes
I couldn't duplicate this discrepancy between -Os and -O1 with gcc-2.95.2 on
PowerPC: -Os gives the smallest kernel as you would expect, by a small margin:
% powerpc-linux-size vmlinux.O1
text data bss dec hex filename
872076 70512 99356 1041944 fe618 vmlinux.O1
% powerpc-linux-size vmlinux.O2
text data bss dec hex filename
864624 70512 99356 1034492 fc8fc vmlinux.O2
% powerpc-linux-size vmlinux.Os
text data bss dec hex filename
859596 70512 99356 1029464 fb558 vmlinux.Os
Regards,
Graham
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