GlobalISel: moreElementsVector for G_LOAD/G_STORE

AMDGPU change and test is a placeholder until a future patch with
complete handling.

llvm-svn: 367503
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
index 139992c..baceab3 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
@@ -511,6 +511,7 @@
       [](const LegalityQuery &Query) {
         return std::make_pair(0, LLT::scalar(32));
       })
+    .moreElementsIf(isSmallOddVector(0), oneMoreElement(0))
     .fewerElementsIf([=](const LegalityQuery &Query) {
         unsigned MemSize = Query.MMODescrs[0].SizeInBits;
         return (MemSize == 96) &&