http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53967
--- Comment #16 from bfriesen at simple dot dallas.tx.us 2012-07-19 14:29:10 UTC --- Is there a way that I can selectively apply the -frename-registers fix to functions which benefit from it in order to work around the bug until the fix is widely available? I tried #pragma GCC optimize ("O3,rename-registers") and #pragma GCC optimize ("rename-registers") as well as the function attribute equivalent and there was no effect. GCC seems to ignore the request. I did find another somewhat similar function which benefited significantly from -frename-registers.