Zap some redundant 'ori $?, $?, 0' from SPU.
Also remove some code that died in the process.
One now non-existant ori is checked for.

llvm-svn: 115306
diff --git a/llvm/test/CodeGen/CellSPU/arg_ret.ll b/llvm/test/CodeGen/CellSPU/arg_ret.ll
index 743292a..6f07458 100644
--- a/llvm/test/CodeGen/CellSPU/arg_ret.ll
+++ b/llvm/test/CodeGen/CellSPU/arg_ret.ll
@@ -27,6 +27,7 @@
 define ccc %paramstruct @test_return( i32 %param,  %paramstruct %prm )
 {
 ;CHECK:  lqd	$75, 80($sp)
+;CHECK-NOT:	ori	{{\$[0-9]+, \$[0-9]+, 0}}
 ;CHECK:  lr    $3, $4
   ret %paramstruct %prm
 }