Revert previous changes to remove -enable-linscan and the *BETA columns of
the nightly test. These are still needed for iterative linear scan testing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18577 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/NightlyTest.pl b/utils/NightlyTest.pl
index d178d08..8230ebe 100755
--- a/utils/NightlyTest.pl
+++ b/utils/NightlyTest.pl
@@ -23,7 +23,7 @@
 #  -parallel        Run two parallel jobs with GNU Make.
 #  -release         Build an LLVM Release version
 #  -pedantic        Enable additional GCC warnings to detect possible errors.
-#  -enable-linscan  Accepted but ignored
+#  -enable-linscan  Enable linearscan tests
 #  -disable-llc     Disable LLC tests in the nightly tester.
 #  -disable-jit     Disable JIT tests in the nightly tester.
 #  -verbose         Turn on some debug output
@@ -260,7 +260,7 @@
       $MAKEOPTS   = "$MAKEOPTS CompileOptimizeOpts='-O3 -DNDEBUG -finline-functions -Wpointer-arith -Wcast-align -Wno-deprecated -Wold-style-cast -Wabi -Woverloaded-virtual -ffor-scope'"; 
       next; 
   }
-  if (/^-enable-linscan$/) { next; }
+  if (/^-enable-linscan$/) { $PROGTESTOPTS .= " ENABLE_LINEARSCAN=1"; next; }
   if (/^-disable-llc$/)    { $PROGTESTOPTS .= " DISABLE_LLC=1";
                              $CONFIGUREARGS .= " --disable-llc_diffs"; next; }
   if (/^-disable-jit$/)    { $PROGTESTOPTS .= " DISABLE_JIT=1";