[llvm] [X86][AVX10.2] Support AVX10.2-COMEF new instructions. (PR #108063)

[Phoebe Wang via llvm-commits]

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@@ -1225,3 +1225,51 @@ defm VFNMADD132NEPBF16 : avx10_fma3p_132_bf16<0x9C, "vfnmadd132nepbf16", X86any_
 defm VFNMSUB132NEPBF16 : avx10_fma3p_132_bf16<0x9E, "vfnmsub132nepbf16", X86any_Fnmsub,
                                               X86Fnmsub, SchedWriteFMA>;
 }
+
+//-------------------------------------------------
+// AVX10  COMEF instructions
+//-------------------------------------------------
+multiclass avx10_com_ef_int<bits<8> Opc, X86VectorVTInfo _, SDNode OpNode,
+                             string OpcodeStr,
+                             Domain d,
+                             X86FoldableSchedWrite sched = WriteFComX> {
+  let ExeDomain = d in {
+    def rr_Int : AVX512<Opc, MRMSrcReg, (outs), (ins _.RC:$src1, _.RC:$src2),
+                        !strconcat(OpcodeStr, "\t{$src2, $src1|$src1, $src2}"),
+                        [(set EFLAGS, (OpNode (_.VT _.RC:$src1), _.RC:$src2))]>,
+                        EVEX, EVEX_V128, Sched<[sched]>, SIMD_EXC;
+    let mayLoad = 1 in {
+      def rm_Int : AVX512<Opc, MRMSrcMem, (outs), (ins _.RC:$src1, _.ScalarMemOp:$src2),
+                          !strconcat(OpcodeStr, "\t{$src2, $src1|$src1, $src2}"),
+                          [(set EFLAGS, (OpNode (_.VT _.RC:$src1), (_.LdFrag addr:$src2)))]>,
+                          EVEX, EVEX_V128, Sched<[sched]>, SIMD_EXC;
+    }
+    let Uses = [MXCSR], mayRaiseFPException = 0 in {
+      def rrb_Int : AVX512<Opc, MRMSrcReg, (outs), (ins _.RC:$src1, _.RC:$src2),
+                           !strconcat(OpcodeStr, "\t{{sae}, $src2, $src1|$src1, $src2, {sae}}"),
+                           []>,
+                           EVEX, EVEX_V128, EVEX_B, Sched<[sched]>, SIMD_EXC;
+    }
+  }
+}
+
+let Defs = [EFLAGS], Predicates = [HasAVX10_2] in {
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phoebewang wrote:

Put `let Uses = [MXCSR]` here, because all variants need it.

https://github.com/llvm/llvm-project/pull/108063