Why does Mk/Uses/compiler.mk have code for "# clang not always supported on Tier-2" these days?

[Mark Millard]

Mk/Uses/compiler.mk has the .if test :

    if (defined(FAVORITE_COMPILER) && ${FAVORITE_COMPILER} == gcc) || (${ARCH} 
!= amd64 && ${ARCH} != i386) # clang not always supported on Tier-2

Should it instead allow clang generally these days via
instead being:

    if (defined(FAVORITE_COMPILER) && ${FAVORITE_COMPILER} == gcc)


Would this need some sort of exp-run sequence?

===
Mark Millard
marklmi at yahoo.com