[pushed] rtl-ssa: Fix a silly typo

[Richard Sandiford]

s/ref/reg/ on a previously unused function name.

Sorry for the blunder.  Tested on aarch64-linux-gnu, aarch64_be-elf
and x86_64-linux-gnu, pushed as obvious.

Richard


gcc/
	* rtl-ssa/functions.h (function_info::ref_defs): Rename to...
	(function_info::reg_defs): ...this.
	* rtl-ssa/member-fns.inl (function_info::ref_defs): Rename to...
	(function_info::reg_defs): ...this.
---
 gcc/rtl-ssa/functions.h    | 2 +-
 gcc/rtl-ssa/member-fns.inl | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/rtl-ssa/functions.h b/gcc/rtl-ssa/functions.h
index 25896fc1138..f64bd3f290a 100644
--- a/gcc/rtl-ssa/functions.h
+++ b/gcc/rtl-ssa/functions.h
@@ -100,7 +100,7 @@ public:
   // Return a list of all definitions of register REGNO, in reverse postorder.
   // This includes both real stores by instructions and artificial
   // definitions by things like phi nodes.
-  iterator_range<def_iterator> ref_defs (unsigned int regno) const;
+  iterator_range<def_iterator> reg_defs (unsigned int regno) const;
 
   // Check if all uses of register REGNO are either unconditionally undefined
   // or use the same single dominating definition.  Return the definition
diff --git a/gcc/rtl-ssa/member-fns.inl b/gcc/rtl-ssa/member-fns.inl
index 4b3eacbd4b4..e1ab7d1ba84 100644
--- a/gcc/rtl-ssa/member-fns.inl
+++ b/gcc/rtl-ssa/member-fns.inl
@@ -883,7 +883,7 @@ function_info::mem_defs () const
 }
 
 inline iterator_range<def_iterator>
-function_info::ref_defs (unsigned int regno) const
+function_info::reg_defs (unsigned int regno) const
 {
   return { m_defs[regno + 1], nullptr };
 }