[LLVMdev] how can I create an SSE instrinsics sqrt?

[zhi chen]

I want to create a vector version sqrt as the following.

Value *Approx::CreateFSqrt(IRBuilder<> &builder, Value *v, const char*
Name) {
  Type *tys[] = {v->getType()};
  Module* M = currF->getParent();
  Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd);
  CallInst *CI = builder.CreateCall(sqrtv, v, Name);

  return CI;
}

Here is Value *v is <2 x double>
However, it outputs Assertion `isa<X>(Val) && "cast<Ty>() argument of
incompatible type! any idea?
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