[llvm] r208073 - Disable -Wcomment when building with GCC.
Evgeniy Stepanov
eugeni.stepanov at gmail.com
Tue May 6 02:46:07 PDT 2014
Author: eugenis
Date: Tue May 6 04:46:06 2014
New Revision: 208073
URL: http://llvm.org/viewvc/llvm-project?rev=208073&view=rev
Log:
Disable -Wcomment when building with GCC.
GCC version of -Wcomment is not compatible with ascii art graph diagrams.
Reverts r207629.
Modified:
llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
llvm/trunk/unittests/Analysis/LazyCallGraphTest.cpp
Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=208073&r1=208072&r2=208073&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Tue May 6 04:46:06 2014
@@ -295,6 +295,17 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE
append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS)
check_cxx_compiler_flag("-Werror -Wnon-virtual-dtor" CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG)
append_if(CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG "-Wnon-virtual-dtor" CMAKE_CXX_FLAGS)
+
+ # Check if -Wcomment is OK with an // comment ending with '\' if the next
+ # line is also a // comment.
+ set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
+ set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} -Werror -Wcomment)
+ CHECK_C_SOURCE_COMPILES("// \\\\\\n//\\nint main() {return 0;}"
+ C_WCOMMENT_ALLOWS_LINE_WRAP)
+ set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
+ if (NOT C_WCOMMENT_ALLOWS_LINE_WRAP)
+ append("-Wno-comment" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
+ endif()
endif (LLVM_ENABLE_WARNINGS)
append_if(LLVM_ENABLE_WERROR "-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
if (LLVM_ENABLE_CXX1Y)
Modified: llvm/trunk/unittests/Analysis/LazyCallGraphTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/Analysis/LazyCallGraphTest.cpp?rev=208073&r1=208072&r2=208073&view=diff
==============================================================================
--- llvm/trunk/unittests/Analysis/LazyCallGraphTest.cpp (original)
+++ llvm/trunk/unittests/Analysis/LazyCallGraphTest.cpp Tue May 6 04:46:06 2014
@@ -41,17 +41,17 @@ std::unique_ptr<Module> parseAssembly(co
// IR forming a call graph with a diamond of triangle-shaped SCCs:
//
-// d1 |
-// / \ |
-// d3--d2 |
-// / \ |
-// b1 c1 |
-// / \ / \ |
-// b3--b2 c3--c2 |
-// \ / |
-// a1 |
-// / \ |
-// a3--a2 |
+// d1
+// / \
+// d3--d2
+// / \
+// b1 c1
+// / \ / \
+// b3--b2 c3--c2
+// \ /
+// a1
+// / \
+// a3--a2
//
// All call edges go up between SCCs, and clockwise around the SCC.
static const char DiamondOfTriangles[] =
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