[PATCH] D123693: Transform illegal intrinsics to V_ILLEGAL

[Leon Clark via Phabricator via llvm-commits]

Leonc added a comment.

In D123693#3580812 <https://reviews.llvm.org/D123693#3580812>, @foad wrote:

> Where's the rationale? Surely unsupported intrinsics //should// fail to select, and perhaps be diagnosed even earlier?

Normally yes. The issue is our libraries contain code for all targets. We rely on dead code elimination to remove illegal intrinsics, but that doesn't happen on -O0.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123693/new/

https://reviews.llvm.org/D123693