Merge pull request #523 from dbabokin/tot

Tracking ToT changes

Makefile

@@ -51,7 +51,17 @@ else
 endif
 ARCH_TYPE = $(shell arch)
 
-LLVM_LIBS=$(shell $(LLVM_CONFIG) --libs engine ipo bitreader bitwriter instrumentation linker)
+LLVM_CXXFLAGS=$(shell $(LLVM_CONFIG) --cppflags)
+LLVM_VERSION=LLVM_$(shell $(LLVM_CONFIG) --version | sed -e s/\\./_/ -e s/svn//)
+LLVM_VERSION_DEF=-D$(LLVM_VERSION)
+
+LLVM_COMPONENTS = engine ipo bitreader bitwriter instrumentation linker
+# Component "option" was introduced in 3.3 and starting with 3.4 it is required for the link step.
+# We check if it's available before adding it (to not break 3.2 and earlier).
+ifeq ($(shell $(LLVM_CONFIG) --components |grep -c option), 1)
+    LLVM_COMPONENTS+=option
+endif
+LLVM_LIBS=$(shell $(LLVM_CONFIG) --libs $(LLVM_COMPONENTS))
 
 CLANG=clang
 CLANG_LIBS = -lclangFrontend -lclangDriver \
@@ -70,10 +80,6 @@ ifeq ($(ARCH_OS2),Msys)
 	ISPC_LIBS += -lshlwapi -limagehlp -lpsapi
 endif
 
-LLVM_CXXFLAGS=$(shell $(LLVM_CONFIG) --cppflags)
-LLVM_VERSION=LLVM_$(shell $(LLVM_CONFIG) --version | sed -e s/\\./_/ -e s/svn//)
-LLVM_VERSION_DEF=-D$(LLVM_VERSION)
-
 # Define build time stamp and revision.
 # For revision we use GIT or SVN info.
 BUILD_DATE=$(shell date +%Y%m%d)

cbackend.cpp

@@ -2188,7 +2188,11 @@ bool CWriter::doInitialization(llvm::Module &M) {
 #endif
   TAsm = new CBEMCAsmInfo();
   MRI  = new llvm::MCRegisterInfo();
+#if defined(LLVM_3_4)
+  TCtx = new llvm::MCContext(TAsm, MRI, NULL);
+#else
   TCtx = new llvm::MCContext(*TAsm, *MRI, NULL);
+#endif
   //Mang = new llvm::Mangler(*TCtx, *TD);
 
   // Keep track of which functions are static ctors/dtors so they can have