re PR target/26778 (GCC4 moves the result of a conditional block through inadequate...

re PR target/26778 (GCC4 moves the result of a conditional block through inadequate registers)

gcc:
2006-09-09  Paolo Bonzini  <bonzini@gnu.org>
	    Dale Johannesen  <dalej@apple.com>

	PR target/26778
	* regclass.c (struct reg_pref): Update documentation.
	(regclass): Set prefclass to NO_REGS if memory is the best option.
	(record_reg_classes): Cope with a prefclass set to NO_REGS.

gcc/testsuite:
2006-09-09  Eric Christopher  <echristo@apple.com>

	PR target/26778
	* gcc.target/i386/pr26778.c: New testcase.

Co-Authored-By: Dale Johannesen <dalej@apple.com>
From-SVN: r116798