[Bug target/56529] New: [SH] Calls to __sdivsi3_i4i and __udivsi3_i4i are generated on SH2

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56529



             Bug #: 56529

           Summary: [SH] Calls to __sdivsi3_i4i and __udivsi3_i4i are

                    generated on SH2

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: target

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: olege...@gcc.gnu.org

            Target: sh*-*-*





The original problem was reported here:



http://gcc.gnu.org/ml/gcc-patches/2013-03/msg00088.html



Actually the compiler should prohibit the -mdiv=call-table option on SH2,

because there is no suitable implementation in libgcc.

However, this fails, due to the following lines in sh.c:



/* SH1 .. SH3 cores often go into small-footprint systems, so

   default to the smallest implementation available.  */

   else if (TARGET_SH2)    /* ??? EXPERIMENTAL */

     sh_div_strategy = SH_DIV_CALL_TABLE;



I'm not sure what that is for, but it certainly is broken or incomplete (libgcc

pieces missing).