[X86] Remove unused isel pattern for zero extend from v16i1/v8i1 to v16i32/v8i64.

We have custom lowering on vzext that produces a vselect and a build vector. So zext never gets to isel.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322381 91177308-0d34-0410-b5e6-96231b3b80d8

Author: topperc

lib/Target/X86/X86InstrAVX512.td

@@ -1337,11 +1337,6 @@ defm VPBROADCASTDr : avx512_int_broadcast_reg_vl<0x7C, avx512vl_i32_info,
 defm VPBROADCASTQr : avx512_int_broadcast_reg_vl<0x7C, avx512vl_i64_info,
                                                  X86VBroadcast, GR64, HasAVX512>, VEX_W;
 
-def : Pat <(v16i32 (X86vzext VK16WM:$mask)),
-           (VPBROADCASTDrZrkz VK16WM:$mask, (i32 (MOV32ri 0x1)))>;
-def : Pat <(v8i64 (X86vzext VK8WM:$mask)),
-           (VPBROADCASTQrZrkz VK8WM:$mask, (i64 (MOV64ri 0x1)))>;
-
 // Provide aliases for broadcast from the same register class that
 // automatically does the extract.
 multiclass avx512_int_broadcast_rm_lowering<X86VectorVTInfo DestInfo,