New testcase for missed case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12199 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/ArgumentPromotion/chained.ll b/test/Transforms/ArgumentPromotion/chained.ll
new file mode 100644 (file)
index 0000000..3adfbf9
--- /dev/null
+++ b/test/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
+}