The changes are made in the patch for optimized usage of pcmpne/pcmpeq
instructions. The xor with register to register is replaced with pcmpeq
/pcmpne instructions and for immediate check still the xori will be used.
The purpose of the change is to acheive the aggressive usage of pcmpne
/pcmpeq instructions instead of xor being used for comparison.

ChangeLog:
2015-05-04  Ajit Agarwal  <ajitkum@xilinx.com>

	* config/microblaze/microblaze.md (cbranchsi4): Added immediate
	constraints.
	(cbranchsi4_reg): New.
	* config/microblaze/microblaze.c
	(microblaze_expand_conditional_branch_reg): New.
	* config/microblaze/microblaze-protos.h
	(microblaze_expand_conditional_branch_reg): New prototype.

From-SVN: r222791