Update gcmole to a more recent clang/llvm.

* Changes for 2.9:
     * Use CXX in Makefile instead of hardwired g++, we need a more
       modern GCC than 4.6 later, anyway.

* Changes for 3.0:
     * Use llvm namespace.
     * Diagnostic => DiagnosticsEngine.

* Changes for 3.1:
     * The BlockDeclRefExpr AST node is gone.
     * The structure of the CXXNewExpr AST node has changed.
     * Path changed from Release to Release+Asserts.
     * Use clang++ instead of -cc1, otherwise we lose the system include
       paths.

* Changes for 3.2:
     none needed

* Changes for 3.3:
     * Use lookup_iterator::begin/end instead of first/second.

* Changes for 3.4:
     * createItaniumMangleContext => ItaniumMangleContext::create.

* Changes for 3.5:
     * clang uses <type_traits> now, so -std=c++0x is needed.
     * Type-trait-related AST changes.
     * getCustomDiagID signature changed.
     * We must link the C++ library statically now.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/445983002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22972 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

.gitignore

@@ -64,6 +64,7 @@ shell_g
 /testing/gmock
 /testing/gtest
 /third_party/icu
+/third_party/llvm
 /tools/jsfunfuzz
 /tools/jsfunfuzz.zip
 /tools/oom_dump/oom_dump

tools/gcmole/Makefile

@@ -31,13 +31,12 @@ LLVM_INCLUDE:=$(LLVM_SRC_ROOT)/include
 CLANG_INCLUDE:=$(LLVM_SRC_ROOT)/tools/clang/include
 
 libgcmole.so: gcmole.cc
-	g++ -I$(LLVM_INCLUDE) -I$(CLANG_INCLUDE) -I. -D_DEBUG -D_GNU_SOURCE \
-	-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3 		    \
-	-fomit-frame-pointer -fno-exceptions -fno-rtti -fPIC 	            \
-	-Woverloaded-virtual -Wcast-qual -fno-strict-aliasing               \
-	-pedantic -Wno-long-long -Wall 	                                    \
-	-W -Wno-unused-parameter -Wwrite-strings                            \
-	-shared -o libgcmole.so gcmole.cc
+	$(CXX) -I$(LLVM_INCLUDE) -I$(CLANG_INCLUDE) -I. -D_DEBUG              \
+	-D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS         \
+	-D__STDC_LIMIT_MACROS -O3 -fomit-frame-pointer -fno-exceptions        \
+	-fno-rtti -fPIC -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing \
+	-pedantic -Wno-long-long -Wall -W -Wno-unused-parameter               \
+	-Wwrite-strings -std=c++0x -shared -o libgcmole.so gcmole.cc
 
 clean:
-	rm -f libgcmole.so
+	$(RM) libgcmole.so

tools/gcmole/bootstrap.sh

@@ -27,9 +27,12 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# This script will build libgcmole.so.
+# This script will build libgcmole.so. Building a recent clang needs a
+# recent GCC, so if you explicitly want to use GCC 4.8, use:
+#
+#    CC=gcc-4.8 CPP=cpp-4.8 CXX=g++-4.8 CXXFLAGS=-static-libstdc++ CXXCPP=cpp-4.8 ./bootstrap.sh
 
-CLANG_RELEASE=2.9
+CLANG_RELEASE=3.5
 
 THIS_DIR="$(dirname "${0}")"
 LLVM_DIR="${THIS_DIR}/../../third_party/llvm"
@@ -110,7 +113,7 @@ if [ "${OS}" = "Darwin" ]; then
   # See http://crbug.com/256342
   STRIP_FLAGS=-x
 fi
-strip ${STRIP_FLAGS} Release/bin/clang
+strip ${STRIP_FLAGS} Release+Asserts/bin/clang
 cd -
 
 # Build libgcmole.so
@@ -122,5 +125,5 @@ set +x
 echo
 echo You can now run gcmole using this command:
 echo
-echo CLANG_BIN=\"third_party/llvm/Release/bin\" lua tools/gcmole/gcmole.lua
+echo CLANG_BIN=\"third_party/llvm/Release+Asserts/bin\" lua tools/gcmole/gcmole.lua
 echo

tools/gcmole/gcmole.lua

@@ -93,14 +93,16 @@ end
 local function MakeClangCommandLine(plugin, plugin_args, triple, arch_define)
    if plugin_args then
      for i = 1, #plugin_args do
-        plugin_args[i] = "-plugin-arg-" .. plugin .. " " .. plugin_args[i]
+        plugin_args[i] = "-Xclang -plugin-arg-" .. plugin
+           .. " -Xclang " .. plugin_args[i]
      end
      plugin_args = " " .. table.concat(plugin_args, " ")
    end
-   return CLANG_BIN .. "/clang -cc1 -load " .. CLANG_PLUGINS .. "/libgcmole.so"
-      .. " -plugin "  .. plugin
+   return CLANG_BIN .. "/clang++ -c "
+      .. " -Xclang -load -Xclang " .. CLANG_PLUGINS .. "/libgcmole.so"
+      .. " -Xclang -plugin -Xclang "  .. plugin
       .. (plugin_args or "")
-      .. " -triple " .. triple
+      .. " -Xclang -triple -Xclang " .. triple
       .. " -D" .. arch_define
       .. " -DENABLE_DEBUGGER_SUPPORT"
       .. " -DV8_I18N_SUPPORT"