[Bug target/61128] New: [cr16] Incorrect code generated for udivmodsi4

["stefan at astylos dot dk" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61128

            Bug ID: 61128
           Summary: [cr16] Incorrect code generated for udivmodsi4
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: stefan at astylos dot dk
            Target: cr16

Created attachment 32769
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32769&action=edit
Preprocessed source

When a cr16 crosscompiler builds gcc, the return sequence of udivmodsi4 looks
like this:
        ...
        movw    r2, r0
        movw    r3, r1
        cmpw    $0, r6
        bne     .L10
        movw    ra, r0
        movw    ra, r1
.L10:
        pop     $1, r7
        popret  ra

The last two movw instructions tries to move the 32 bits in ra to the pair of
16 bit registers r0 and r1, but this will only move the low order 16 bits to
both of them. This should probably be a 'movd (ra),(r1,r0)' instruction
instead.

This is in 4.8, 4.9 and current trunk. 

Configuration options:
--target=cr16-none-elf --enable-languages=c --without-headers --disable-libssp