[AVX] Fix vpcmpeqq predicate.

[igorb]

Summary

Fix vpcmpeqq predicate. AVX512 version of vpcmpeqq is not equivalent to AVX one.
Split from https://reviews.llvm.org/D32679

[craig.topper]

LGTM

llvm/trunk/lib/Target/X86/X86InstrSSE.td

defm PMAXUD   : SS48I_binop_rm<0x3F, "pmaxud", umax, v4i32, VR128,
                                  memopv2i64, i128mem, 1, SSE_INTALU_ITINS_P>;
   defm PMAXUW   : SS48I_binop_rm<0x3E, "pmaxuw", umax, v8i16, VR128,
                                  memopv2i64, i128mem, 1, SSE_INTALU_ITINS_P>;
   defm PMULDQ   : SS48I_binop_rm2<0x28, "pmuldq", X86pmuldq, v2i64, v4i32,
                                   VR128, memopv2i64, i128mem,
                                   SSE_INTMUL_ITINS_P, 1>;
 }
 
-let Predicates = [HasAVX, NoVLX] in {
+let Predicates = [HasAVX, NoVLX] in
   defm VPMULLD  : SS48I_binop_rm<0x40, "vpmulld", mul, v4i32, VR128,
                                  loadv2i64, i128mem, 0, SSE_PMULLD_ITINS>,
                                  VEX_4V, VEX_WIG;
+let Predicates = [HasAVX] in
   defm VPCMPEQQ : SS48I_binop_rm<0x29, "vpcmpeqq", X86pcmpeq, v2i64, VR128,
                                  loadv2i64, i128mem, 0, SSE_INTALU_ITINS_P>,
                                  VEX_4V, VEX_WIG;
-}
+
 let Predicates = [HasAVX2] in {
   defm VPMULLDY  : SS48I_binop_rm<0x40, "vpmulld", mul, v8i32, VR256,
                                   loadv4i64, i256mem, 0, SSE_PMULLD_ITINS>,
                                   VEX_4V, VEX_L, VEX_WIG;
   defm VPCMPEQQY : SS48I_binop_rm<0x29, "vpcmpeqq", X86pcmpeq, v4i64, VR256,
                                   loadv4i64, i256mem, 0, SSE_INTALU_ITINS_P>,
                                   VEX_4V, VEX_L, VEX_WIG;
 }