[Hexagon] Adding some codegen tests and updating some to match spec.

llvm-svn: 239690
diff --git a/llvm/test/CodeGen/Hexagon/args.ll b/llvm/test/CodeGen/Hexagon/args.ll
index 1c470f6..3bfb8b1 100644
--- a/llvm/test/CodeGen/Hexagon/args.ll
+++ b/llvm/test/CodeGen/Hexagon/args.ll
@@ -2,7 +2,7 @@
 ; CHECK: r5:4 = combine(#6, #5)
 ; CHECK: r3:2 = combine(#4, #3)
 ; CHECK: r1:0 = combine(#2, #1)
-; CHECK: memw(r29{{ *}}+{{ *}}#0){{ *}}={{ *}}#7
+; CHECK: memw(r29+#0)=#7
 
 
 define void @foo() nounwind {