Revision 145272: http://gcc.gnu.org/ml/gcc-cvs/2009-03/msg00779.html
caused: [...@gnu-33 gcc]$ cat /tmp/x.i double foo (unsigned long var) { return var; } [...@gnu-33 gcc]$ ./xgcc -B./ -m32 -S -ansi /tmp/x.i [...@gnu-33 gcc]$ ./xgcc -B./ -m32 -S -ansi /tmp/x.i -march=core2 /tmp/x.i: In function foo: /tmp/x.i:5: error: unrecognizable insn: (insn 23 22 16 2 /tmp/x.i:4 (set (reg:DF 8 st [orig:58 D.1245 ] [58]) (float:DF (mem/c:DI (plus:SI (reg/f:SI 6 bp) (const_int -8 [0xfffffffffffffff8])) [0 S8 A64]))) -1 (nil)) /tmp/x.i:5: internal compiler error: in extract_insn, at recog.c:2048 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [...@gnu-33 gcc]$ -- Summary: [4.5 regression] Revision 145272 breaks -ansi - march=core2 Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl dot tools at gmail dot com GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39592