Remove IceConverter when LLVM IR is not allowed.

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> LLVM_BIN_PATH=<path> \
 #        LIBCXX_INSTALL_PATH=<path> CLANG_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 68 matching lines @@
 # It's recommended that CXX matches the compiler you used to build LLVM itself.
 CCACHE := `command -v ccache`
 CXX := CCACHE_CPP2=yes $(CCACHE) $(CLANG_PATH)/clang++
 
 CXXFLAGS := $(LLVM_CXXFLAGS) -std=c++11 -Wall -Wextra -Werror -fno-rtti \
         -fno-exceptions $(OPTLEVEL) $(ASSERTIONS) $(CXX_DEFINES) -g \
         $(HOST_FLAGS) -Wno-error=unused-parameter \
         -I$(LIBCXX_INSTALL_PATH)/include/c++/v1
 LDFLAGS := $(HOST_FLAGS) -L$(LIBCXX_INSTALL_PATH)/lib
 
-SRCS= \
+SRCS = \
         assembler.cpp \
         assembler_ia32.cpp \
         IceCfg.cpp \
         IceCfgNode.cpp \
-        IceConverter.cpp \
         IceGlobalContext.cpp \
         IceGlobalInits.cpp \
         IceInst.cpp \
         IceInstX8632.cpp \
         IceIntrinsics.cpp \
         IceLiveness.cpp \
         IceMemoryRegion.cpp \
         IceOperand.cpp \
         IceRegAlloc.cpp \
         IceRNG.cpp \
         IceTargetLowering.cpp \
         IceTargetLoweringX8632.cpp \
         IceTimerTree.cpp \
         IceTranslator.cpp \
         IceTypeConverter.cpp \
         IceTypes.cpp \
         llvm2ice.cpp \
         PNaClTranslator.cpp
 
+ifndef MINIMAL
+  SRCS += IceConverter.cpp
+endif
+
 OBJS=$(patsubst %.cpp, $(OBJDIR)/%.o, $(SRCS))
 
 # Keep all the first target so it's the default.
 all: $(OBJDIR)/llvm2ice make_symlink
 
 make_symlink: $(OBJDIR)/llvm2ice $(OBJDIR)/llvm2ice.build_atts
         rm -rf llvm2ice llvm2ice.build_atts
         ln -s $(OBJDIR)/llvm2ice
         ln -s $(OBJDIR)/llvm2ice.build_atts
 
@@ skipping 12 matching lines @@
 
 $(OBJS): | $(OBJDIR)
 
 $(OBJDIR):
         @mkdir -p $@
 
 check-lit: llvm2ice make_symlink
         LLVM_BIN_PATH=$(LLVM_BIN_PATH) \
         $(LLVM_SRC_PATH)/utils/lit/lit.py -sv tests_lit
 
+ifdef MINIMAL
+check: check-lit
+        @echo "Crosstests ignored, minimal build"
+else
 check: check-lit
         (cd crosstest; ./runtests.sh)
+endif
 
 # TODO: Fix the use of wildcards.
 # Assumes clang-format is within $PATH.
 format:
         clang-format -style=LLVM -i src/*.h src/*.cpp
 
 # Assumes clang-format-diff.py is within $PATH, and that the
 # clang-format it calls is also within $PATH.  This may require adding
 # a component to $PATH, or creating symlinks within some existing
 # $PATH component.  Uses the one in /usr/lib/clang-format/ if it
 # exists.
 ifeq (,$(wildcard /usr/lib/clang-format/clang-format-diff.py))
   CLANG_FORMAT_DIFF = clang-format-diff.py
 else
   CLANG_FORMAT_DIFF = /usr/lib/clang-format/clang-format-diff.py
 endif
 format-diff:
         git diff -U0 `git merge-base HEAD master` | \
         $(CLANG_FORMAT_DIFF) -p1 -style=LLVM -i
 
 clean:
         rm -rf llvm2ice llvm2ice.build_atts *.o $(OBJDIR)
 
 clean-all: clean
         rm -rf build/