Add a new DAGCombine optimization for BUILD_VECTOR.

[oota-llvm.git] / test / CodeGen / X86 / 2011-10-27-tstore.ll

diff --git a/test/CodeGen/X86/2011-10-27-tstore.ll b/test/CodeGen/X86/2011-10-27-tstore.ll
new file mode 100644 (file)
index 0000000..016e02c
--- /dev/null
+++ b/test/CodeGen/X86/2011-10-27-tstore.ll
@@ -0,0 +1,16 @@
+; RUN: llc < %s -march=x86-64 -mcpu=corei7 | FileCheck %s
+
+target triple = "x86_64-unknown-linux-gnu"
+
+;CHECK: ltstore
+;CHECK: pshufd
+;CHECK: pshufd
+;CHECK: ret
+define void @ltstore() {
+entry:
+  %in = load <4 x i32>* undef
+  %j = shufflevector <4 x i32> %in, <4 x i32> undef, <2 x i32> <i32 0, i32 1>
+  store <2 x i32> %j, <2 x i32>* undef
+  ret void
+}
+