Use -mc-relax-all flag for sandboxed translator

tools/pnacl-llc/pnacl-llc.cpp

Index: tools/pnacl-llc/pnacl-llc.cpp
diff --git a/tools/pnacl-llc/pnacl-llc.cpp b/tools/pnacl-llc/pnacl-llc.cpp
index cc0ee94bd0cad6a3d3fdbfdb36a1e731e9f5f32d..9b44758d6af612ce5a4f4757e467023e5b8a4871 100644
--- a/tools/pnacl-llc/pnacl-llc.cpp
+++ b/tools/pnacl-llc/pnacl-llc.cpp
@@ -705,6 +705,9 @@ static int compileModule(StringRef ProgramName) {
 
   TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
   Options.DisableIntegratedAS = NoIntegratedAssembler;
+#if defined(__native_client__)
+  Options.MCOptions.MCRelaxAll = true;

[Mark Seaborn, 2015/05/15 14:03:42]

Can you add a comment explaining that this reduces memory use (citing the issue
perhaps) and why we enable it only for the sandboxed build of pnacl-llc?

[Petr Hosek, 2015/05/15 19:27:39]

Done.

+#endif
 
   if (GenerateSoftFloatCalls)
     FloatABIForCalls = FloatABI::Soft;