[llvm-dev] [RFC] IR-level Region Annotations
Johannes Doerfert via llvm-dev
llvm-dev at lists.llvm.org
Thu Feb 2 02:44:44 PST 2017
On 01/19, Sanjoy Das via llvm-dev wrote:
> Now you could say that the llvm.experimental.intrinsic_a and
> llvm.experimental.intrinsic_b intrinsics are magic, and even such
> "obvious" optimizations are not allowed to happen across them; but then
> calls to these intrinsics is pretty fundamentally different from
> "normal" calls, and are probably best modeled as new instructions.
> You're going to have to do the same kind of auditing of passes either
> way, and the only extra cost of a new instruction is the extra bitcode
> reading / writing code.
It does and I think ppl should therefor take a look at the alternative
proposal send out last week . The "extra bitcode reading/writing
code"  is mechanical and should not be an issue.
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