Subzero. X8664. Fix broken call sequence.

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 479 matching lines @@
           MINIMAL=1 check
 # Check that there are no g++ build errors or warnings.
         +make -f Makefile.standalone \
           GPLUSPLUS=1 compile_only
 # Check the x86 assembler unit tests.
         +make -f Makefile.standalone \
           DEBUG=1 CHECK_X86_ASM=1 check-unit
 # Run lit tests, cross tests, unit tests, and spec2k/x86-32.
         +make -f Makefile.standalone \
           check check-spec
+# Run spec2k/x86-64.
+        +make -f Makefile.standalone \
+          TARGET=x8664 check-spec
 # Build spec2k under -Om1/x86-32, to check for liveness errors.
         +make -f Makefile.standalone \
           SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
+# Build spec2k under -Om1/x86-64, to check for liveness errors.
+        +make -f Makefile.standalone \
+          SPECFLAGS='-Om1' TARGET=x8664 SPECBUILDONLY=true check-spec
 # Run spec2k for x86-32 without advanced phi lowering.
         +make -f Makefile.standalone \
           SPECFLAGS='--sz=--phi-edge-split=0' check-spec
+# Run spec2k for x86-64 without advanced phi lowering.
+        +make -f Makefile.standalone \
+          SPECFLAGS='--sz=--phi-edge-split=0' TARGET=x8664 check-spec
 # Run cross tests and lit tests to validate filetype=asm output.
         +make -f Makefile.standalone \
           FORCEASM=1 check-xtest check-lit
 # Build spec2k for arm32.
         +make -f Makefile.standalone \
           TARGET=arm32 SPECBUILDONLY=true check-spec
 # Build spec2k under -Om1/arm32.
         +make -f Makefile.standalone \
           TARGET=arm32 SPECFLAGS='-Om1' SPECBUILDONLY=true check-spec
 # Run a few spec2k tests for arm32 using qemu. Keep the list sorted in
@@ skipping 25 matching lines @@
         @echo See Subzero size breakdown in bloat/pnacl-sz.bloat.html
 
 docs:
         make -C docs -f Makefile.standalone
 
 clean:
         rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json
 
 clean-all: clean
         rm -rf build/  crosstest/Output/