i386: Make flags_reg_operand a special predicate

There is no need to check the mode in flags_reg_operand predicate. The
mode in flags setting instructions is checked with ix86_match_ccmode.

The patch avoids "warning: operand X missing mode?" warnings with
VOIDmode flags_reg_operand predicate.

gcc/ChangeLog:

	* config/i386/predicates.md ("flags_reg_operand"):
	Make predicate special to avoid automatic mode checks.

diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index a63b8cd7be50f09b3d0c64fc072ef8bb8eace0b6..b5a86257c9ed87cd7328b33b4af8d2689f18ef95 100644 (file)
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -88,7 +88,7 @@
        (match_test "REGNO (op) == AX_REG")))
 
 ;; Return true if op is the flags register.
-(define_predicate "flags_reg_operand"
+(define_special_predicate "flags_reg_operand"
   (and (match_code "reg")
        (match_test "REGNO (op) == FLAGS_REG")))