AMDGPU/GlobalISel: Add failing ABI lowering testcases

Author: arsenm

llvm/test/CodeGen/AMDGPU/GlobalISel/function-returns.v2i65.ll

@@ -0,0 +1,7 @@
+; XFAIL: *
+; RUN: llc -global-isel -mtriple=amdgcn-mesa-mesa3d -mcpu=fiji -stop-after=irtranslator -verify-machineinstrs -o - %s
+
+define <2 x i65> @v2i65_func_void() #0 {
+  %val = load <2 x i65>, <2 x i65> addrspace(1)* undef
+  ret <2 x i65> %val
+}

llvm/test/CodeGen/AMDGPU/GlobalISel/irtranslator-function-args.v2i65.ll

@@ -0,0 +1,7 @@
+; XFAIL: *
+; RUN: llc -global-isel -march=amdgcn -mcpu=fiji -stop-after=irtranslator -verify-machineinstrs -o - %s
+
+define void @void_func_v2i65(<2 x i65> %arg0) #0 {
+  store <2 x i65> %arg0, <2 x i65> addrspace(1)* undef
+  ret void
+}