Re: SPE configuration in GCC

[David Edelsohn <dje at watson dot ibm dot com>]

>>>>> Mark Mitchell writes:

Mark> I understand that reason.  I think that it would make more sense for the 
Mark> default to match the usual GCC convention (all variants supported) and 
Mark> have the AIX configuration redefine TARGET_SPE to zero (to avoid the 
Mark> bloat) than the current situation.  David, comments?

	powerpc-linux (mentioned in the first message) is not the default.
SPE is not supported by *BSD or BeOS or most other PowerPC targets.  It
seemed easier to disable it as the default and enable it for the specific
targets that support SPE than vice versa.

	I would consider changing the behavior for powerpc-elf (not
powerpc-linux), but all other powerpc targets, including linux, need to be
updated to zero that macro.  Compiler performance on Linux, Darwin, AIX,
*BSD, etc. is important.

	It is unfortunate that Aldy framed the conversation in terms of
AIX because it confuses the issue and prompts a discussion of solutions
that are too narrow -- making the whole discussion more difficult.

David