================
@@ -1191,12 +1191,17 @@ Value *CodeGenFunction::EmitCommonNeonBuiltinExpr(
return Builder.CreateBitCast(Ops[0], Ty);
}
case NEON::BI__builtin_neon_vaddhn_v: {
+ // SrcTy has double-width elements (e.g. <8 x i16> when VTy is <8 x i8>).
llvm::FixedVectorType *SrcTy =
llvm::FixedVectorType::getExtendedElementVectorType(VTy);
- // %sum = add <4 x i32> %lhs, %rhs
+ // Example: vaddhn_s16(int16x8_t, int16x8_t)
+ // Ops are <16 x i8>, SrcTy is <8 x i16> -> mismatch
----------------
iamvickynguyen wrote:
Great, thank you! I'll pick up narrowing-subtraction then :grinning:
https://github.com/llvm/llvm-project/pull/204989
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