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.
Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
Uros.
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index a63b8cd7be5..b5a86257c9e 100644
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -88,7 +88,7 @@ (define_predicate "ax_reg_operand"
(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")))
