new testcase for vector narrowing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26537 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/vec_narrow.ll b/test/Transforms/InstCombine/vec_narrow.ll
new file mode 100644 (file)
index 0000000..d5c7f85
--- /dev/null
+++ b/test/Transforms/InstCombine/vec_narrow.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'add float'
+
+%V = type <4 x float>
+
+float %test(%V %A, %V %B, float %f) {
+        %C = insertelement %V %A, float %f, uint 0
+        %D = add %V %C, %B
+        %E = extractelement %V %D, uint 0
+        ret float %E
+}
+