[Bug target/24779] New: Python miscompilation - TOC reload

["gbeauchesne at mandriva dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Hi,

The following testcase reduced from Python's mathmodule.c is miscompiled with
gcc 3.3-hammer at -O2 and FSF gcc version 4.0.3 20051103 at -O2
-fno-unit-at-a-time as otherwise gcc is smart enough to optimize out the
function descriptor and the problem disappears.

Looking at the generated assembly, the second func() TOC is loaded too early
and what is to contain 2.0 is garbaged (value loaded from elsewhere).


-- 
           Summary: Python miscompilation - TOC reload
           Product: gcc
           Version: 4.0.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gbeauchesne at mandriva dot com
 GCC build triplet: powerpc64-unknown-linux-gnu
  GCC host triplet: powerpc64-unknown-linux-gnu
GCC target triplet: powerpc64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24779