Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c	(revision 183904)
+++ config/i386/i386.c	(working copy)
@@ -38685,6 +38685,9 @@
 #undef TARGET_EXPAND_TO_RTL_HOOK
 #define TARGET_EXPAND_TO_RTL_HOOK ix86_maybe_switch_abi
 
+#undef TARGET_FLAGS_REGNUM
+#define TARGET_FLAGS_REGNUM FLAGS_REG
+
 #undef TARGET_LEGITIMATE_ADDRESS_P
 #define TARGET_LEGITIMATE_ADDRESS_P ix86_legitimate_address_p
 
Index: testsuite/gcc.target/i386/pr28685.c
===================================================================
--- testsuite/gcc.target/i386/pr28685.c	(revision 0)
+++ testsuite/gcc.target/i386/pr28685.c	(revision 0)
@@ -0,0 +1,12 @@
+/* { dg-options "-O2" } */
+
+int test(int a, int b)
+{
+  int lt = a < b;
+  int eq = a == b;
+  if (lt)
+    return 1;
+  return eq;
+}
+
+/* { dg-final { scan-assembler-times "cmp" 1 } } */