[committed][testsuite] Add missing require-effective-target alloca

Hi, Add missing require-effect-target alloca directives. Tested on nvptx. Committed to trunk. Thanks, - Tom [testsuite] Add missing require-effective-target alloca gcc/testsuite/ChangeLog: 2020-09-25 Tom de Vries * gcc.dg/analyzer/pr93355-localealias.c: Require effective target

[committed][testsuite] Add missing require-effective-target alloca

Hi, Add missing require-effect-target alloca directives. Tested on nvptx. Committed to trunk. Thanks, - Tom [testsuite] Add missing require-effective-target alloca gcc/testsuite/ChangeLog: * gcc.dg/Warray-bounds-63.c: Add require-effective-target alloca. * gcc.dg/Warray-bound