Fix a problem with DAGCombine where we were building an illegal build
vector shuffle mask. Forced the mask to be built using i32. Note: this will
be irrelevant once vector_shuffle no longer takes a build vector for the
shuffle mask.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67076 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/dagcombine-buildvector.ll b/test/CodeGen/X86/dagcombine-buildvector.ll
new file mode 100644
index 0000000..2ca4177
--- /dev/null
+++ b/test/CodeGen/X86/dagcombine-buildvector.ll
@@ -0,0 +1,13 @@
+; RUN: llvm-as < %s | llc -march=x86 -o %t -f
+; RUN: grep unpcklpd %t | count 1
+; RUN: grep movapd %t | count 1
+
+; Shows a dag combine bug that will generate an illegal build vector
+; with v2i64 build_vector i32, i32.
+
+define void @test(<2 x double>* %dst, <4 x double> %src) {
+entry:
+ %tmp7.i = shufflevector <4 x double> %src, <4 x double> undef, <2 x i32> < i32 0, i32 2 >
+ store <2 x double> %tmp7.i, <2 x double>* %dst
+ ret void
+}
\ No newline at end of file