Added a (store (op (load ...) ...) ...) folding test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25933 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/store_op_load_fold.ll b/test/CodeGen/X86/store_op_load_fold.ll
new file mode 100644 (file)
index 0000000..64d8da5
--- /dev/null
+++ b/test/CodeGen/X86/store_op_load_fold.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | llc -march=x86 | not grep 'mov'
+;
+; Test the add and load are folded into the store instruction.
+
+target triple = "i686-pc-linux-gnu"
+
+%X = weak global short 0
+
+void %foo() {
+       %tmp.0 = load short* %X
+       %tmp.3 = add short %tmp.0, 329
+       store short %tmp.3, short* %X
+       ret void
+}