Kris Kennaway <kris@FreeBSD.org> tells us that FreeBSD/Alpha shouldn't
use an optimization higher than -O.

Configure

diff --git a/Configure b/Configure
index 257b94a..3400778 100755
--- a/Configure
+++ b/Configure
@@ -265,7 +265,7 @@
 "alpha-gcc","gcc:-O3::(unknown)::SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_UNROLL DES_RISC1:asm/alpha.o:::::::::dlfcn:true64-shared",
 "alpha-cc", "cc:-std1 -tune host -O4 -readonly_strings::(unknown)::SIXTY_FOUR_BIT_LONG RC4_CHUNK:asm/alpha.o:::::::::dlfcn:true64-shared",
 "alpha164-cc", "cc:-std1 -tune host -fast -readonly_strings::(unknown)::SIXTY_FOUR_BIT_LONG RC4_CHUNK:asm/alpha.o:::::::::dlfcn:true64-shared",
-"FreeBSD-alpha","gcc:-DTERMIOS -O3 -fomit-frame-pointer::(unknown)::SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_INT DES_PTR DES_RISC2:::",
+"FreeBSD-alpha","gcc:-DTERMIOS -O -fomit-frame-pointer::(unknown)::SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_INT DES_PTR DES_RISC2:::",
 
 #### Alpha Linux with GNU C and Compaq C setups
 # Special notes: