[CMake] Fixing a typo in a flag

Turns out cc1's flag has 1 - not 2...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@256070 91177308-0d34-0410-b5e6-96231b3b80d8

utils/perf-training/lit.cfg

@@ -29,7 +29,7 @@ config.suffixes = ['.c', '.cpp', '.m', '.mm', '.cu', '.ll', '.cl', '.s', '.S', '
 use_lit_shell = os.environ.get("LIT_USE_INTERNAL_SHELL")
 config.test_format = lit.formats.ShTest(use_lit_shell == "0")
 config.substitutions.append( ('%clang_cpp', ' %s --driver-mode=cpp %s ' % (config.clang, sysroot_flags)))
-config.substitutions.append( ('%clang_cc1', ' %s --cc1 %s ' % (config.clang, sysroot_flags)))
+config.substitutions.append( ('%clang_cc1', ' %s -cc1 %s ' % (config.clang, sysroot_flags)))
 config.substitutions.append( ('%clang', ' %s %s ' % (config.clang, sysroot_flags) ) )
 config.substitutions.append( ('%test_root', config.test_exec_root ) )