Compiling the attached testcase (from WINE) with -O3 takes very long time and memory (800MB) on current TRUNK (4.3).
removing one or more lines speeds up the compiler massively. I think this is due to bitmask and ifs. -- Summary: compiling takes very long time during -O3 compile Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: marcus at jet dot franken dot de GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29885