test-release.sh: Run the test-suite using phase3 clang

[tstellar]

Summary

We were using the system compiler to run the test suite.

[hans]

Nice catch!

llvm/trunk/utils/release/test-release.sh

if [ $do_test_suite = 'yes' ]; then
       Lit=$SandboxDir/bin/lit
       TestSuiteBuildDir="$BuildDir/test-suite-build"
       TestSuiteSrcDir="$BuildDir/test-suite.src"
 
       virtualenv $SandboxDir
       $SandboxDir/bin/python $BuildDir/llvm.src/utils/lit/setup.py install
       mkdir -p $TestSuiteBuildDir
       cd $TestSuiteBuildDir
+      env CC="$c_compiler" CXX="$cxx_compiler" \
           cmake $TestSuiteSrcDir -DTEST_SUITE_LIT=$Lit
       if ! ( ${MAKE} -j $NumJobs -k check \
           2>&1 | tee $LogDir/llvm.check-Phase$Phase-$Flavor.log ) ; then
         deferred_error $Phase $Flavor "test suite failed"
       fi
     fi
     cd $BuildDir
 }
 
for Flavor in $Flavors ; do
     echo "# Phase 3: Building llvmCore"
     configure_llvmCore 3 $Flavor $llvmCore_phase3_objdir
     build_llvmCore 3 $Flavor \
         $llvmCore_phase3_objdir $llvmCore_phase3_destdir
     clean_RPATH $llvmCore_phase3_destdir/usr/local
 
     ########################################################################
     # Testing: Test phase 3
+    c_compiler=$llvmCore_phase3_destdir/usr/local/bin/clang
+    cxx_compiler=$llvmCore_phase3_destdir/usr/local/bin/clang++
     echo "# Testing - built with clang"
     test_llvmCore 3 $Flavor $llvmCore_phase3_objdir
 
     ########################################################################
     # Compare .o files between Phase2 and Phase3 and report which ones
     # differ.
     if [ "$do_compare" = "yes" ]; then
         echo