================
@@ -3435,6 +3524,22 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
}
return LHS.lshr(RHS.getZExtValue());
});
+ case clang::X86::BI__builtin_ia32_packsswb128:
+ case clang::X86::BI__builtin_ia32_packsswb256:
+ case clang::X86::BI__builtin_ia32_packsswb512:
+ case clang::X86::BI__builtin_ia32_packssdw128:
+ case clang::X86::BI__builtin_ia32_packssdw256:
+ case clang::X86::BI__builtin_ia32_packssdw512:
+ return interp__builtin_x86_pack(S, OpPC, Call, /*Unsat=*/false,
+ NarrowElement);
----------------
RKSimon wrote:
You should be able to create a very minimal wrapper for APInt::truncSSat for
PACKSS:
```
[](const APSInt &Src) {
return Src.truncSSat(Src.getBitwidth() / 2);
}
```
https://github.com/llvm/llvm-project/pull/156003
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