New testcase for missed case

llvm-svn: 12199

test/Regression/Transforms/ArgumentPromotion/chained.ll

@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | opt -argpromotion -instcombine | llvm-dis | not grep load
+
+%G1 = constant int 0
+%G2 = constant int* %G1
+
+implementation
+
+internal int %test(int **%X) {
+	%Y = load int** %X
+	%X = load int* %Y
+	ret int %X
+}
+
+int %caller(int** %P) {
+	%X = call int %test(int** %G2)
+	ret int %X
+}