Subzero. Native 64-bit int arithmetic on x86-64.

Makefile.standalone

 # The following variables will likely need to be modified, depending on where
 # and how you built LLVM & Clang. They can be overridden in a command-line
 # invocation of make, like:
 #
 #   make LLVM_SRC_PATH=<path> LIBCXX_INSTALL_PATH=<path> CLANG_PATH=<path> \
 #        PNACL_BIN_PATH=<path> ...
 #
 
 # LLVM_SRC_PATH is the path to the root of the checked out source code. This
 # directory should contain the configure script, the include/ and lib/
@@ skipping 307 matching lines @@
 $(OBJDIR)/unittest: $(OBJDIR)
         @mkdir -p $@
 
 $(OBJDIR)/unittest/AssemblerX8632: $(OBJDIR)/unittest
         @mkdir -p $@
 $(OBJDIR)/unittest/AssemblerX8664: $(OBJDIR)/unittest
         @mkdir -p $@
 
 RT_SRC := runtime/szrt.c runtime/szrt_ll.ll runtime/szrt_profiler.c
 RT_OBJ := build/runtime/szrt_native_x8632.o build/runtime/szrt_sb_x8632.o \
+        build/runtime/szrt_native_x8664.o build/runtime/szrt_sb_x8664.o \
         build/runtime/szrt_native_arm32.o build/runtime/szrt_sb_arm32.o
 
 runtime: $(RT_OBJ)
 
 # Use runtime.is.built so that build-runtime.py is invoked only once
 # even in a parallel build.
 .INTERMEDIATE: runtime.is.built
 $(RT_OBJ): runtime.is.built
 runtime.is.built: $(RT_SRC) pydir/build-runtime.py
         @echo ================ Building Subzero runtime ================
         ./pydir/build-runtime.py -v --pnacl-root $(PNACL_TOOLCHAIN_ROOT)
 
 check-lit: $(OBJDIR)/pnacl-sz make_symlink
         PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
         $(LLVM_SRC_PATH)/utils/lit/lit.py -sv tests_lit
 
 ifdef MINIMAL
 check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
         @echo "Crosstests disabled, minimal build"
 else
 check-xtest: $(OBJDIR)/pnacl-sz make_symlink runtime
        # Do all native/sse2 tests, but only test_vector_ops for native/sse4.1.
        # For (slow) sandboxed tests, limit to Om1/sse4.1.
+       # TODO(jpp): implement x8664 sandbox, then enable xtests.
         ./pydir/crosstest_generator.py -v --lit \
           --toolchain-root $(TOOLCHAIN_ROOT) \
           -i x8632,native,sse2 -i x8632,native,sse4.1,test_vector_ops \
           -i x8632,sandbox,sse4.1,Om1 \
+          -i x8664,native,sse2 -i x8664,native,sse4.1,test_vector_ops \
+          -e x8664,native,sse2,test_global \
           -i arm32,native,neon,simple_loop \
           -i arm32,native,neon,mem_intrin \
           -i arm32,native,neon,test_bitmanip \
           -i arm32,native,neon,test_stacksave \
           -i arm32,native,neon,test_strengthreduce
         PNACL_BIN_PATH=$(PNACL_BIN_PATH) \
         $(LLVM_SRC_PATH)/utils/lit/lit.py -sv crosstest/Output
 endif
 
 check-unit: $(OBJDIR)/run_unittests
@@ skipping 22 matching lines @@
 
 docs:
         doxygen Doxyfile
         @echo See file://`pwd`/docs/html/index.html
 
 clean:
         rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json
 
 clean-all: clean
         rm -rf build/ docs/