[Bug middle-end/33029] [4.3 Regression] libgcc2.c:1890: internal compiler error: in local_cprop_pass, at gcse.c:3236

[steven at gcc dot gnu dot org]

------- Comment #4 from steven at gcc dot gnu dot org  2007-08-14 21:34 -------
r127273 is this patch: http://gcc.gnu.org/ml/gcc-cvs/2007-08/msg00165.html

My initial reaction was, "What happens to the REG_RETVAL note, if the insn with
the REG_LIBCALL note?"  I don't know what happens with the REG_LIBCALL note,
but if it disappears with the insn that's being deleted, then you should also
remove the REG_RETVAL note, or you're creating something that will look like
nested libcalls (which gcse.c handles, but they're actually not allowed).

So, can you check what happens with the REG_RETVAL note, please?


-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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                 CC|                            |steven at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33029