gold patch committed: Recognize -fsplit-stack prologue with %r11

[Ian Lance Taylor]

I changed the split stack compiler to use %r11 in the prologue for
x86_64.  I committed this patch to gold to recognize that case.

Ian


2009-12-23  Ian Lance Taylor  <iant@google.com>

	* x86_64.cc (Target_x86_64::do_calls_non_split): Recognize
	-fsplit-stack prologue when using %r11.


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