Add a testcase for #9623

llvm-svn: 132991

llvm/test/CodeGen/X86/4char-promote.ll

+; A test for checking PR 9623
+;RUN: llc -march=x86-64 -promote-elements < %s | FileCheck %s
+
+
+; CHECK:  pmulld 
+; CHECK:  paddd  
+; CHECK:  movdqa 
+
+define <4 x i8> @foo(<4 x i8> %x, <4 x i8> %y) {
+entry:
+ %binop = mul <4 x i8> %x, %y
+ %binop6 = add <4 x i8> %binop, %x
+ ret <4 x i8> %binop6
+}
+
+