Remove GCC builtins for vpermilp* intrinsics as clang no longer needs them. Custom lower the intrinsics to the vpermilp target specific node and remove intrinsic patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150060 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index b2eb043..7660b95 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -9488,6 +9488,12 @@
   case Intrinsic::x86_avx2_vperm2i128:
     return DAG.getNode(X86ISD::VPERM2X128, dl, Op.getValueType(),
                        Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));
+  case Intrinsic::x86_avx_vpermil_ps:
+  case Intrinsic::x86_avx_vpermil_pd:
+  case Intrinsic::x86_avx_vpermil_ps_256:
+  case Intrinsic::x86_avx_vpermil_pd_256:
+    return DAG.getNode(X86ISD::VPERMILP, dl, Op.getValueType(),
+                       Op.getOperand(1), Op.getOperand(2));
 
   // ptest and testp intrinsics. The intrinsic these come from are designed to
   // return an integer value, not just an instruction so lower it to the ptest