http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46883
Summary: GCC ICE with error: unrecognizable insn Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: raj.k...@gmail.com Host: arm-oe-linux-gnueabi Target: arm-oe-linux-gnueabi Build: x86_64-linux Created attachment 22704 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22704 testcase Attached testcase when compiled with gcc trunk segfaults at O1/Os/O2 for arm $ arm-oe-linux-gnueabi-gcc -O2 -S a.c /net/isis/home/kraj/a.c: In function ‘bar’: /net/isis/home/kraj/a.c:11:1: error: unrecognizable insn: (insn 149 93 97 4 /net/isis/home/kraj/a.c:9 (set (reg:SI 271) (and:SI (subreg:SI (mem:HI (post_inc:SI (reg:SI 248 [ ivtmp.42 ])) [2 S2 A16]) 0) (const_int 255 [0xff]))) -1 (expr_list:REG_INC (reg:SI 248 [ ivtmp.42 ]) (nil))) a.c:11:1: internal compiler error: in extract_insn, at recog.c:2103 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. at Os/O1 it ICEs with internal compiler error: in elimination_costs_in_insn, at reload1.c:3639