[PATCH] Add LABEL_REF_P to rtl.h

[Bill Schmidt]

Hi,

This patch just adds a convenience macro to be used in subsequent patches.

Bootstrapped successfully on powerpc64le-unknown-linux-gnu.  Okay for trunk?

Thanks,
Bill


2019-05-23  Michael Meissner  <meiss...@linux.ibm.com>

        * rtl.h (LABEL_REF_P): New #define.


Index: gcc/rtl.h
===================================================================
--- gcc/rtl.h   (revision 271579)
+++ gcc/rtl.h   (working copy)
@@ -1052,6 +1052,10 @@ is_a_helper <rtx_note *>::test (rtx_insn *insn)
 #define CONSTANT_P(X)   \
   (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
 
+/* 1 if X is a LABEL_REF.  */
+#define LABEL_REF_P(X)  \
+  (GET_CODE (X) == LABEL_REF)
+
 /* 1 if X can be used to represent an object.  */
 #define OBJECT_P(X)                                                    \
   ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)