r198747 - Add tests for clang plugins

[Alp Toker]

Author: alp
Date: Wed Jan  8 05:38:47 2014
New Revision: 198747

URL: http://llvm.org/viewvc/llvm-project?rev=198747&view=rev
Log:
Add tests for clang plugins

Somehow the entire plugin infrastructure went wholly untested until now.

The only plugins available for use in testing are the examples, so plugin tests
will only be run if CLANG_BUILD_EXAMPLES is enabled in the build.

(The examples should really be enabled by default, not just to aid testing but
also to prevent bitrot in some key user-facing code. I'll propose that
shortly.)

Requires supporting changes in LLVM r198746.

Added:
    cfe/trunk/test/Frontend/plugins.c
Modified:
    cfe/trunk/CMakeLists.txt
    cfe/trunk/test/lit.cfg
    cfe/trunk/test/lit.site.cfg.in

Modified: cfe/trunk/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/CMakeLists.txt?rev=198747&r1=198746&r2=198747&view=diff
==============================================================================
--- cfe/trunk/CMakeLists.txt (original)
+++ cfe/trunk/CMakeLists.txt Wed Jan  8 05:38:47 2014
@@ -319,6 +319,10 @@ macro(add_clang_library name)
     add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
   endif()
 
+  if (MODULE)
+    set_property(TARGET ${name} PROPERTY SUFFIX ${LLVM_PLUGIN_EXT})
+  endif ()
+
   if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "libclang")
     install(TARGETS ${name}
       LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}

Added: cfe/trunk/test/Frontend/plugins.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Frontend/plugins.c?rev=198747&view=auto
==============================================================================
--- cfe/trunk/test/Frontend/plugins.c (added)
+++ cfe/trunk/test/Frontend/plugins.c Wed Jan  8 05:38:47 2014
@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 -load %llvmshlibdir/PrintFunctionNames%pluginext -plugin print-fns %s 2>&1 | FileCheck %s
+// REQUIRES: plugins, examples
+
+// CHECK: top-level-decl: "x"
+void x();

Modified: cfe/trunk/test/lit.cfg
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/lit.cfg?rev=198747&r1=198746&r2=198747&view=diff
==============================================================================
--- cfe/trunk/test/lit.cfg (original)
+++ cfe/trunk/test/lit.cfg Wed Jan  8 05:38:47 2014
@@ -195,6 +195,22 @@ config.clang = inferClang(config.environ
 if not lit_config.quiet:
     lit_config.note('using clang: %r' % config.clang)
 
+# Plugins (loadable modules)
+# TODO: This should be supplied by Makefile or autoconf.
+if sys.platform in ['win32', 'cygwin']:
+    has_plugins = (config.enable_shared == 1)
+else:
+    has_plugins = True
+
+if has_plugins and config.llvm_plugin_ext:
+    config.available_features.add('plugins')
+
+config.substitutions.append( ('%llvmshlibdir', config.llvm_shlib_dir) )
+config.substitutions.append( ('%pluginext', config.llvm_plugin_ext) )
+
+if config.clang_examples:
+    config.available_features.add('examples')
+
 # Note that when substituting %clang_cc1 also fill in the include directory of
 # the builtin headers. Those are part of even a freestanding environment, but
 # Clang relies on the driver to locate them.

Modified: cfe/trunk/test/lit.site.cfg.in
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/lit.site.cfg.in?rev=198747&r1=198746&r2=198747&view=diff
==============================================================================
--- cfe/trunk/test/lit.site.cfg.in (original)
+++ cfe/trunk/test/lit.site.cfg.in Wed Jan  8 05:38:47 2014
@@ -6,6 +6,8 @@ config.llvm_src_root = "@LLVM_SOURCE_DIR
 config.llvm_obj_root = "@LLVM_BINARY_DIR@"
 config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
 config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
+config.llvm_shlib_dir = "@SHLIBDIR@"
+config.llvm_plugin_ext = "@LLVM_PLUGIN_EXT@"
 config.lit_tools_dir = "@LLVM_LIT_TOOLS_DIR@"
 config.clang_obj_root = "@CLANG_BINARY_DIR@"
 config.clang_tools_dir = "@CLANG_TOOLS_DIR@"
@@ -14,6 +16,7 @@ config.llvm_use_sanitizer = "@LLVM_USE_S
 config.clang_arcmt = @ENABLE_CLANG_ARCMT@
 config.clang_staticanalyzer = @ENABLE_CLANG_STATIC_ANALYZER@
 config.clang_rewriter = @ENABLE_CLANG_REWRITER@
+config.clang_examples = @CLANG_BUILD_EXAMPLES@
 config.host_arch = "@HOST_ARCH@"
 
 # Support substitution of the tools and libs dirs with user parameters. This is
@@ -21,6 +24,7 @@ config.host_arch = "@HOST_ARCH@"
 try:
     config.clang_tools_dir = config.clang_tools_dir % lit_config.params
     config.llvm_tools_dir = config.llvm_tools_dir % lit_config.params
+    config.llvm_shlib_dir = config.llvm_shlib_dir % lit_config.params
     config.llvm_libs_dir = config.llvm_libs_dir % lit_config.params
 except KeyError:
     e = sys.exc_info()[1]