http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48250
Summary: ICE in reload_cse_simplify_operands, at postreload.c:403 Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: a...@gcc.gnu.org Created attachment 23755 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23755 Reduced testcase. Using a trunk (svn 171251) compiler, configured for ARMv7-a, I get the following ICE: gcc -marm -mfpu=neon -O2 -c lp723185.i lp723185.i: In function 'foo': lp723185.i:29:1: error: insn does not satisfy its constraints: (insn 30 79 31 5 (set (mem/s:DI (plus:SI (reg:SI 3 r3) (const_int -3 [0xfffffffffffffffd])) [4 unaligned_S_6->u64+0 S8 A64]) (reg:DI 4 r4 [146])) lp723185.i:25 626 {*arm_movdi_vfp} (nil)) lp723185.i:29:1: internal compiler error: in reload_cse_simplify_operands, at postreload.c:403 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. It's possible that this is the same as bug #42949, but I'm not qualified to judge.