[Bug target/28232] New: wrong movua.l instruction combine for sh4a

[tyokota at k2 dot dion dot ne dot jp]

union unaligned {
        void *ptr;
} __attribute__((__packed__));

void *foo(union unaligned *p) {
  return (p->ptr);
}

--------------------
sh-elf-gcc -V4.1.1 -S -O2 -m4a test2.c

combine optimize change movua.l to mov.l instruction.

        .file   "test2.c"
        .text
        .text
        .align 1
        .align 5
        .global _foo
        .type   _foo, @function
_foo:
        mov.l   @r4,r0
        mov.l   r14,@-r15
        mov     r15,r14
        mov     r14,r15
        mov.l   @r15+,r14
        rts
        nop
        .size   _foo, .-_foo
        .ident  "GCC: (GNU) 4.1.1"


-- 
           Summary: wrong movua.l  instruction combine  for sh4a
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tyokota at k2 dot dion dot ne dot jp
GCC target triplet: sh-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28232