Subzero: Fix symbol name mangling. Make flags global.

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 253 matching lines @@
   IceCompileServer.cpp \
   IceELFObjectWriter.cpp \
   IceELFSection.cpp \
   IceFixups.cpp \
   IceGlobalContext.cpp \
   IceGlobalInits.cpp \
   IceInst.cpp \
   IceIntrinsics.cpp \
   IceLiveness.cpp \
   IceLoopAnalyzer.cpp \
+  IceMangling.cpp \
   IceMemory.cpp \
   IceOperand.cpp \
   IceRegAlloc.cpp \
   IceRNG.cpp \
   IceSwitchLowering.cpp \
   IceThreading.cpp \
   IceTimerTree.cpp \
   IceTranslator.cpp \
   IceTypes.cpp \
   main.cpp \
@@ skipping 249 matching lines @@
         +make -f Makefile.standalone \
           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 sb
 # Run lit tests, cross tests, unit tests, and spec2k/x86-32.
         +make -f Makefile.standalone \
-          check check-spec sb
+          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.
@@ skipping 56 matching lines @@
 
 help-check-xtest:
         @cat Makefile.standalone-help/check-xtest.txt
 
 clean:
         rm -rf pnacl-sz *.o $(foreach nexe,$(NEXES),$(notdir $(nexe))) \
           $(OBJDIR) $(SB_OBJDIR) $(SBB_OBJDIR) build/*.bloat.json
 
 clean-all: clean
         rm -rf build/  crosstest/Output/