Index: testsuite/gcc.target/i386/pr66814.c
===================================================================
--- testsuite/gcc.target/i386/pr66814.c	(revision 0)
+++ testsuite/gcc.target/i386/pr66814.c	(revision 0)
@@ -0,0 +1,4 @@
+/* { dg-do compile { target { ia32 } } } */
+/* { dg-options "-march=i586 -mavx512f -O2" } */
+
+#include "avx512f-klogic-2.c"
Index: config/i386/i386.md
===================================================================
--- config/i386/i386.md	(revision 225599)
+++ config/i386/i386.md	(working copy)
@@ -17379,8 +17379,8 @@
 ;; lifetime information then.
 
 (define_peephole2
-  [(set (match_operand:SWI124 0 "nonimmediate_operand")
-	(not:SWI124 (match_operand:SWI124 1 "nonimmediate_operand")))]
+  [(set (match_operand:SWI124 0 "nonimmediate_gr_operand")
+	(not:SWI124 (match_operand:SWI124 1 "nonimmediate_gr_operand")))]
   "optimize_insn_for_speed_p ()
    && ((TARGET_NOT_UNPAIRABLE
 	&& (!MEM_P (operands[0])
@@ -17524,8 +17524,10 @@
                      [(match_dup 0)
                       (match_operand 2 "memory_operand")]))]
   "REGNO (operands[0]) != REGNO (operands[1])
-   && ((MMX_REG_P (operands[0]) && MMX_REG_P (operands[1])) 
-       || (SSE_REG_P (operands[0]) && SSE_REG_P (operands[1])))"
+   && ((MMX_REGNO_P (REGNO (operands[0]))
+        && MMX_REGNO_P (REGNO (operands[1]))) 
+       || (SSE_REGNO_P (REGNO (operands[0]))
+           && SSE_REGNO_P (REGNO (operands[1]))))"
   [(set (match_dup 0) (match_dup 2))
    (set (match_dup 0)
         (match_op_dup 3 [(match_dup 0) (match_dup 1)]))])
@@ -17673,7 +17675,7 @@
 	(match_operand 1 "const0_operand"))]
   "GET_MODE_SIZE (GET_MODE (operands[0])) <= UNITS_PER_WORD
    && (! TARGET_USE_MOV0 || optimize_insn_for_size_p ())
-   && GENERAL_REG_P (operands[0])
+   && GENERAL_REGNO_P (REGNO (operands[0]))
    && peep2_regno_dead_p (0, FLAGS_REG)"
   [(parallel [(set (match_dup 0) (const_int 0))
 	      (clobber (reg:CC FLAGS_REG))])]
@@ -17694,6 +17696,7 @@
   [(set (match_operand:SWI248 0 "register_operand")
 	(const_int -1))]
   "(optimize_insn_for_size_p () || TARGET_MOVE_M1_VIA_OR)
+   && GENERAL_REGNO_P (REGNO (operands[0]))
    && peep2_regno_dead_p (0, FLAGS_REG)"
   [(parallel [(set (match_dup 0) (const_int -1))
 	      (clobber (reg:CC FLAGS_REG))])]
Index: config/i386/predicates.md
===================================================================
--- config/i386/predicates.md	(revision 225599)
+++ config/i386/predicates.md	(working copy)
@@ -37,6 +37,12 @@
   (and (match_code "reg")
        (match_test "GENERAL_REGNO_P (REGNO (op))")))
 
+;; True if the operand is a nonimmediate operand with GENERAL class register.
+(define_predicate "nonimmediate_gr_operand"
+  (if_then_else (match_code "reg")
+    (match_test "GENERAL_REGNO_P (REGNO (op))")
+    (match_operand 0 "nonimmediate_operand")))
+
 ;; Return true if OP is a register operand other than an i387 fp register.
 (define_predicate "register_and_not_fp_reg_operand"
   (and (match_code "reg")