================
@@ -3412,6 +3412,13 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
case Builtin::BI__builtin_elementwise_fma:
return interp__builtin_elementwise_fma(S, OpPC, Call);
+ case clang::X86::BI__builtin_ia32_pblendvb128:
+ case clang::X86::BI__builtin_ia32_pblendvb256:
+ return interp__builtin_elementwise_triop(
+ S, OpPC, Call, [](const APSInt &F, const APSInt &T, const APSInt &C) {
+ return ((APInt)C).isNegative() ? T : F;
----------------
RKSimon wrote:
Sorry I missed this - yes it should be copy not ref -
interp__builtin_elementwise_triop is a general wrapper that won't necessarily
return one of the arg values - see the vpmadd52 for other examples.
https://github.com/llvm/llvm-project/pull/157100
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