[Bug optimization/14909] New: tail call optimization does not work with indirect call

[cesarb at nitnet dot com dot br]

(since I have nothing better to do, here's another sibcall bug)

When compiling:
void g(void (*f)(void)) { f(); }

With:
gcc -W -Wall -Os -fomit-frame-pointer -save-temps -c

The result is:
g:
        call    *4(%esp)
        ret

It should be:
g:
        jmp    *4(%esp)

The same happens when returning something other than void (my original testcase
used unsigned int).

Reading specs from /usr/lib/gcc-lib/i486-linux/3.3.3/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib
--enable-nls --without-included-gettext --enable-__cxa_atexit
--enable-clocale=gnu --enable-debug --enable-java-gc=boehm
--enable-java-awt=xlib --enable-objc-gc i486-linux
Thread model: posix
gcc version 3.3.3 (Debian 20040401)

-- 
           Summary: tail call optimization does not work with indirect call
           Product: gcc
           Version: 3.3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cesarb at nitnet dot com dot br
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14909