[clang] [clang][X86] Add constexpr support for mpsadbw128/256 intrinsics (PR #202257)

[via cfe-commits]

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@@ -12694,6 +12694,46 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
     return Success(APValue(ResultElements.data(), ResultElements.size()), E);
   }
 
+  case clang::X86::BI__builtin_ia32_mpsadbw128:
+  case clang::X86::BI__builtin_ia32_mpsadbw256: {
+    APValue SourceA, SourceB, SourceImm;
+    if (!EvaluateAsRValue(Info, E->getArg(0), SourceA) ||
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adream307 wrote:

Done

https://github.com/llvm/llvm-project/pull/202257