Simple hand-coded tests to aid in early development of backends, along with a
Makefile to run ad-hoc tests easily.

llvm-svn: 15664
diff --git a/llvm/test/Regression/CodeGen/Generic/call-ret0.ll b/llvm/test/Regression/CodeGen/Generic/call-ret0.ll
new file mode 100644
index 0000000..205b0be
--- /dev/null
+++ b/llvm/test/Regression/CodeGen/Generic/call-ret0.ll
@@ -0,0 +1,8 @@
+int %foo(int %x) {
+  ret int %x
+}
+
+int %main() {  
+  %r = call int %foo(int 0) 
+  ret int %r
+}