add a testcase for a feature we regressed on because noone wrote the test! :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23513 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/fold-li.ll b/test/CodeGen/PowerPC/fold-li.ll
new file mode 100644 (file)
index 0000000..725f1d4
--- /dev/null
+++ b/test/CodeGen/PowerPC/fold-li.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | llc -march=ppc32 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | grep -v align | not grep li
+
+;; Test that immediates are folded into these instructions correctly.
+
+int %ADD(int %X) {
+       %Y = add int %X, 65537
+       ret int %Y
+}
+
+int %SUB(int %X) {
+       %Y = sub int %X, 65537
+       ret int %Y
+}