Fix PR14204
- Add missing pattern on X86ISD::VZEXT from VR256 to VR256 when AVX2 is enabled.
llvm-svn: 166947
diff --git a/llvm/test/CodeGen/X86/pr14204.ll b/llvm/test/CodeGen/X86/pr14204.ll
new file mode 100644
index 0000000..42e362b
--- /dev/null
+++ b/llvm/test/CodeGen/X86/pr14204.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s -mtriple=x86_64-linux-pc -mcpu=core-avx2 | FileCheck %s
+
+; FIXME: vpmovsxwd should be generated instead of vpmovzxwd followed by
+; SLL/SRA.
+
+define <8 x i32> @foo(<8 x i1> %bar) nounwind readnone {
+entry:
+ %s = sext <8 x i1> %bar to <8 x i32>
+ ret <8 x i32> %s
+; CHECK: foo
+; CHECK: vpmovzxwd
+; CHECK: vpslld
+; CHECK: vpsrad
+; CHECK: ret
+}