https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64461
Bug ID: 64461 Summary: bad assembly generated for Coldfire targets Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: joel at gcc dot gnu.org Created attachment 34368 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34368&action=edit Preprocessed RTEMS source which produces the error Fails at -O1, -O2, and -Os. All RTEMS Coldfire BSPs appear to be failing to build. I have not looked through all build logs yet to give a complete list of CPU models impacted but all are Coldfires. For sure, 5235 and 5282 do this. $ m68k-rtems4.11-gcc --versionm68k-rtems4.11-gcc (GCC) 5.0.0 20141230 (experimental) $ m68k-rtems4.11-gcc -mcpu=5235 -Os -c coldfire.c /tmp/ccrrBmOJ.s: Assembler messages: /tmp/ccrrBmOJ.s:82: Error: operands mismatch -- statement `move.b 3(%a5),3(%a1,%d0.l)' ignored /tmp/ccrrBmOJ.s:977: Error: operands mismatch -- statement `move.b -1(%fp),3(%a0,%d2.l)' ignored /tmp/ccrrBmOJ.s:1055: Error: operands mismatch -- statement `move.b -5(%fp),3(%a0,%d3.l)' ignored