Address subgroup-memory part of #47.

SPIRV/GlslangToSpv.cpp

@@ -5945,16 +5945,20 @@ spv::Id TGlslangToSpvTraverser::createNoArgOperation(glslang::TOperator op, spv:
         builder.createControlBarrier(spv::ScopeSubgroup, spv::ScopeDevice, spv::MemorySemanticsMaskNone);
         return spv::NoResult;
     case glslang::EOpSubgroupMemoryBarrier:
-        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsAllMemory);
+        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsAllMemory |
+                                                        spv::MemorySemanticsAcquireReleaseMask);
         return spv::NoResult;
     case glslang::EOpSubgroupMemoryBarrierBuffer:
-        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsUniformMemoryMask);
+        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsUniformMemoryMask |
+                                                        spv::MemorySemanticsAcquireReleaseMask);
         return spv::NoResult;
     case glslang::EOpSubgroupMemoryBarrierImage:
-        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsImageMemoryMask);
+        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsImageMemoryMask |
+                                                        spv::MemorySemanticsAcquireReleaseMask);
         return spv::NoResult;
     case glslang::EOpSubgroupMemoryBarrierShared:
-        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsWorkgroupMemoryMask);
+        builder.createMemoryBarrier(spv::ScopeSubgroup, spv::MemorySemanticsWorkgroupMemoryMask |
+                                                        spv::MemorySemanticsAcquireReleaseMask);
         return spv::NoResult;
     case glslang::EOpSubgroupElect: {
         std::vector<spv::Id> operands;

Test/baseResults/spv.subgroupBasic.comp.out

@@ -53,10 +53,10 @@ spv.subgroupBasic.comp
               28:     12(int) Constant 3
               32:     12(int) Constant 1
               33:     12(int) Constant 0
-              34:     12(int) Constant 3392
-              35:     12(int) Constant 64
-              36:     12(int) Constant 256
-              37:     12(int) Constant 2048
+              34:     12(int) Constant 3400
+              35:     12(int) Constant 72
+              36:     12(int) Constant 264
+              37:     12(int) Constant 2056
               38:             TypeVector 12(int) 3
               39:     12(int) Constant 8
               40:   38(ivec3) ConstantComposite 39 39 32