================
@@ -4279,6 +4279,36 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
F.subtract(RHS, RM);
return F;
});
+ case clang::X86::BI__builtin_ia32_addsubpd:
+ case clang::X86::BI__builtin_ia32_addsubps:
+ case clang::X86::BI__builtin_ia32_addsubpd256:
+ case clang::X86::BI__builtin_ia32_addsubps256: {
+ // Addsub: alternates between subtraction and addition
+ // Result[i] = (i % 2 == 0) ? (a[i] - b[i]) : (a[i] + b[i])
+ const Pointer &RHS = S.Stk.pop<Pointer>();
+ const Pointer &LHS = S.Stk.pop<Pointer>();
+ const Pointer &Dst = S.Stk.peek<Pointer>();
+ FPOptions FPO = Call->getFPFeaturesInEffect(S.Ctx.getLangOpts());
+ llvm::RoundingMode RM = getRoundingMode(FPO);
+ const auto *VT = Call->getArg(0)->getType()->castAs<VectorType>();
+ unsigned NumElts = VT->getNumElements();
----------------
tbaederr wrote:
```suggestion
unsigned NumElems = VT->getNumElements();
```
https://github.com/llvm/llvm-project/pull/167512
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