[PATCH]: Allow target control of eh optimization

[Nick Clifton]

Hi Guys,

   I am applying the attached patch to implement a new target macro -
   md_allow_eh_opt which can be used to disable the call frame
   optimization code if the target so desires.  This is needed by the
   MN10300 port because its linker relaxation changes the size of
   function prologues which means that some of the optimizations in
   ehopt.c cannot be applied.

Cheers
   Nick

gas/ChangeLog
2007-11-06  Nick Clifton  <nickc@redhat.com>

	* ehopt.c (check_eh_frame): If md_allow_eh_opt is defined, invoke
	it to see if the optimizations should be applied.
	* config/tc-mn10300.h (md_allow_eh_opt): Define.  Only allow call
	frame optimization if linker relaxation is not enabled.

gas/testsuite/ChangeLog
2007-11-06  Nick Clifton  <nickc@redhat.com>

	* gas/elf/elf.exp: Disable ehopt test for mn10300.
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