--- gcc-7.3.1.old/gcc/config/i386/i386.c
+++ gcc-7.3.1/gcc/config/i386/i386.c
@@ -2610,7 +2610,7 @@
 
 
 #ifndef SUBTARGET32_DEFAULT_CPU
-#define SUBTARGET32_DEFAULT_CPU "i386"
+#define SUBTARGET32_DEFAULT_CPU "i486"
 #endif
 
 /* Whether -mtune= or -march= were specified */
--- gcc-7.3.1.old/gcc/config/i386/i386.h
+++ gcc-7.3.1/gcc/config/i386/i386.h
@@ -283,7 +283,7 @@
 /* configure can arrange to change it.  */
 
 #ifndef TARGET_CPU_DEFAULT
-#define TARGET_CPU_DEFAULT PROCESSOR_GENERIC
+#define TARGET_CPU_DEFAULT PROCESSOR_PENTIUMPRO
 #endif
 
 #ifndef TARGET_FPMATH_DEFAULT