Handle copy cycles in pass_cprop_hardreg

2014-10-17  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/61605
	* regcprop.c (copyprop_hardreg_forward_1): Add copy_p and noop_p.  Don't
	notice stores for noops.  Don't regard noops as copies.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216364 138bc75d-0d04-0410-961f-82ee72b054a4
Use fuse-caller-save info in cprop-hardreg

2014-10-17  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/61605
	* regcprop.c (copyprop_hardreg_forward_1): Use
	regs_invalidated_by_this_call instead of regs_invalidated_by_call.

	* gcc.target/i386/fuse-caller-save.c: Update addition check.  Add movl
	absence check.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216365 138bc75d-0d04-0410-961f-82ee72b054a4
Fix misplaced changelog entry

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216366 138bc75d-0d04-0410-961f-82ee72b054a4