x86 validator: Rewrite non-temporal stores into cached memory accesses

tests/validator/nacl.scons

Index: tests/validator/nacl.scons
diff --git a/tests/validator/nacl.scons b/tests/validator/nacl.scons
index 25777cacf7535aac79936e1a55f94a82b32bc5bc..3112368a45016b6a54f44b9572189907ca49e027 100644
--- a/tests/validator/nacl.scons
+++ b/tests/validator/nacl.scons
@@ -5,6 +5,24 @@
 
 Import('env')
 
+# Some of the inline assembly constraints in this test aren't supported by
+# the old version of GCC that the nacl-glibc toolchain uses, so we disable
+# the test for that case.
+if (env.Bit('build_x86') and env.AllowInlineAssembly() and
+    not env.Bit('nacl_glibc')):
+  rewrite_nontemporals_nexe = env.ComponentProgram(
+      'rewrite_nontemporals_test', ['rewrite_nontemporals.c'],
+      EXTRA_LIBS=['${NONIRT_LIBS}'])
+
+  node = env.CommandSelLdrTestNacl(
+      'rewrite_nontemporals_test.out',
+      rewrite_nontemporals_nexe)
+
+  env.AddNodeToTestSuite(node,
+                         ['small_tests', 'nonpexe_tests'],
+                         'run_rewrite_nontemporals_test')
+
+
 # The following test is specific to the x86_64 sandbox, and is not portable.
 if env.Bit('build_x86_64') and env.AllowInlineAssembly():
   lahf_sahf_nexe = env.ComponentProgram(