Replace hardcoded comment at 'lit.site.cfg.in'

At the moment almost every lit.site.cfg.in contains two lines comment:

  ## Autogenerated by LLVM/Clang configuration.
  # Do not edit!

The patch adds variable LIT_SITE_CFG_IN_HEADER, that is replaced from
configure_lit_site_cfg with the note and some useful information.

llvm-svn: 266520

compiler-rt/test/asan/Unit/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 import os
 

compiler-rt/test/asan/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Tool-specific config options.
 config.name_suffix = "@ASAN_TEST_CONFIG_SUFFIX@"

compiler-rt/test/cfi/lit.site.cfg.in

@@ -1,2 +1,4 @@
+@LIT_SITE_CFG_IN_HEADER@
+
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
 lit_config.load_config(config, "@CMAKE_CURRENT_SOURCE_DIR@/lit.cfg")

compiler-rt/test/dfsan/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Tool-specific config options.
 config.name_suffix = "@DFSAN_TEST_CONFIG_SUFFIX@"

compiler-rt/test/lit.common.configured.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Set attribute value if it is unset.
 def set_default(attr, value):

compiler-rt/test/lsan/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Tool-specific config options.
 config.name_suffix = "@LSAN_TEST_CONFIG_SUFFIX@"

compiler-rt/test/msan/Unit/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Load common config for all compiler-rt unit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/unittests/lit.common.unit.configured")

compiler-rt/test/msan/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Tool-specific config options.
 config.name_suffix = "@MSAN_TEST_CONFIG_SUFFIX@"

compiler-rt/test/profile/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Tool-specific config options.
 config.profile_lit_binary_dir = "@PROFILE_LIT_BINARY_DIR@"

compiler-rt/test/safestack/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Load common config for all compiler-rt lit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")

compiler-rt/test/sanitizer_common/Unit/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Load common config for all compiler-rt unit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/unittests/lit.common.unit.configured")

compiler-rt/test/sanitizer_common/lit.site.cfg.in

@@ -1,3 +1,5 @@
+@LIT_SITE_CFG_IN_HEADER@
+
 # Tool-specific config options.
 config.name_suffix = "@CONFIG_NAME@"
 config.tool_name = "@SANITIZER_COMMON_LIT_TEST_MODE@"

compiler-rt/test/tsan/Unit/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Load common config for all compiler-rt unit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/unittests/lit.common.unit.configured")

compiler-rt/test/tsan/lit.site.cfg.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 config.name_suffix = "@TSAN_TEST_CONFIG_SUFFIX@"
 config.has_libcxx = @TSAN_HAS_LIBCXX@

compiler-rt/test/ubsan/lit.site.cfg.in

@@ -1,3 +1,5 @@
+@LIT_SITE_CFG_IN_HEADER@
+
 # Tool-specific config options.
 config.ubsan_lit_test_mode = "@UBSAN_LIT_TEST_MODE@"
 config.target_cflags = "@UBSAN_TEST_TARGET_CFLAGS@"

compiler-rt/unittests/lit.common.unit.configured.in

@@ -1,5 +1,4 @@
-## Autogenerated by LLVM/Clang configuration.
-# Do not edit!
+@LIT_SITE_CFG_IN_HEADER@
 
 # Generic config options for all compiler-rt unit tests.
 config.target_triple = "@TARGET_TRIPLE@"