default "-O2 -pipe -march=i486 -funit-at-a-time" if TARGET_x86
default "-Os -pipe -march=i486 -funit-at-a-time" if TARGET_rdc
default "-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time" if mipsel || mips
default "-O2 -pipe -march=i486 -funit-at-a-time" if TARGET_x86
default "-Os -pipe -march=i486 -funit-at-a-time" if TARGET_rdc
default "-Os -pipe -mips32 -mtune=mips32 -funit-at-a-time" if mipsel || mips