================
@@ -2604,6 +2604,68 @@ static bool interp__builtin_elementwise_int_binop(
return true;
}
+static bool interp__builtin_x86_pack(
+ InterpState &S, CodePtr, const CallExpr *E, unsigned SrcBits, bool IsUnsat,
+ llvm::function_ref<APSInt(const APSInt &X, unsigned, unsigned, bool)>
+ narrowElement) {
+ const auto *VT0 = E->getArg(0)->getType()->castAs<VectorType>();
+ const auto *VT1 = E->getArg(1)->getType()->castAs<VectorType>();
+ assert(VT0 && VT1 && "pack builtin VT0 and VT1 must be VectorType");
+ assert(VT0->getElementType() == VT1->getElementType() &&
+ VT0->getNumElements() == VT1->getNumElements() &&
+ "pack builtin VT0 and VT1 ElementType must be same");
+
+ const unsigned LHSVecLen = VT0->getNumElements();
+
+ const Pointer &RHS = S.Stk.pop<Pointer>();
+ const Pointer &LHS = S.Stk.pop<Pointer>();
+ const Pointer &Dst = S.Stk.peek<Pointer>();
+
+ auto readSrc = [&](const Pointer &P, unsigned I) -> APSInt {
+ if (SrcBits == 16) {
+ int16_t v = P.elem<int16_t>(I);
+ return APSInt(APInt(16, static_cast<uint16_t>(v)), /*isUnsigned=*/false);
+ } else {
+ int32_t v = P.elem<int32_t>(I);
+ return APSInt(APInt(32, static_cast<uint32_t>(v)), /*isUnsigned=*/false);
+ }
+ };
+
+ const unsigned DstBits = SrcBits / 2;
+ auto writeDst = [&](unsigned I, const APSInt &Y) {
+ if (DstBits == 8) {
----------------
woruyu wrote:
Done! replace it wiith `APSInt Tmp + setIsUnsigned + extOrTrunc + assignInteger`
https://github.com/llvm/llvm-project/pull/156003
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