[Bug target/45790] [4.6 Regression] rs6000 builtin vs LTO

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45790

Jack Howarth <howarth at nitro dot med.uc.edu> changed:

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--- Comment #7 from Jack Howarth <howarth at nitro dot med.uc.edu> 2010-09-29 19:15:02 UTC ---
(In reply to comment #6)
> (In reply to comment #5)
> > rs6000_builtin_decl should be working correctly.
> 
> Indeed, 
> I suspect it is because we patch the builtin names to append $LDBL128 for the
> case that we have 128bit long doubles.   However, I've not had a chance to
> investigate why that patching process does not result in a correctly emitted
> builtin (or maybe the target needs to get to opportunity to do so in lto).

You might also look at the definition of TARGET_OS_CPP_BUILTINS() in
gcc/config/rs6000/darwin.h.
The arm-none-eabi target which is also regressed has that redefined as well.