re PR rtl-optimization/21767 (if-convert leaves invalid REG_EQUAL notes)

	PR rtl-optimization/21767
	* rtl.h (function_invariant_p): Re-add declaration.
	* reload1.c (function_invariant_p): No longer static.
	* ifcvt.c (dead_or_predicable): Remove REG_EQUAL notes that
	might have become invalid.

From-SVN: r100448

1 files changed, 3 insertions, 0 deletions

diff --git a/gcc/rtl.h b/gcc/rtl.h
index 2eb5d9c..69091ab 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -2062,6 +2062,9 @@ extern void dbr_schedule (rtx, FILE *);
 extern void dump_local_alloc (FILE *);
 extern int local_alloc (void);
 
+/* In reload1.c */
+extern int function_invariant_p (rtx);
+
 /* In reg-stack.c */
 extern bool reg_to_stack (FILE *);