lto_get_builtin_tree uses built_in_decls but that is only for the
built_in_class of BUILT_IN_NORMAL. The back-ends have their own array with the
builtins in them for the class of BUILT_IN_MD.
So currently we translate all of the back-end builtins into "normal" builtins.
This is why gcc.dg/vmx/3a-03.c currently fails; Most likely all of the vmx
testsuite in fact.
In that example __builtin_altivec_vrefp is changed when reading back the file
into __builtin_lgammal.
--
Summary: Back-end builtins are mishandled
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Keywords: wrong-code, ice-on-valid-code, link-failure
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41638
