SPV: Don't emit memory barrier for ESSL barrier(), but still do for GLSL barrier().

SPIRV/GlslangToSpv.cpp

@@ -3881,7 +3881,8 @@ spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op)
         builder.createNoResultOp(spv::OpEndPrimitive);
         return 0;
     case glslang::EOpBarrier:
-        builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory);
+        if (glslangIntermediate->getProfile() != EEsProfile)
+            builder.createMemoryBarrier(spv::ScopeDevice, spv::MemorySemanticsAllMemory);
         builder.createControlBarrier(spv::ScopeDevice, spv::ScopeDevice, spv::MemorySemanticsMaskNone);
         return 0;
     case glslang::EOpMemoryBarrier: