[PATCH] D34069: [DAGCombiner] Fix PR33368 (vector extend/truncate optimization)

[Zvi Rackover via Phabricator via llvm-commits]

zvi added a comment.

Hi @wolfgangp,

I'm afraid that https://reviews.llvm.org/D34076 adds a combine which replaces the BUILD_VECTOR with a TRUNCATE, so if https://reviews.llvm.org/D34076 will be applied, the test-case in this commit will no longer be covering the bug this commit fixes.
Do you have a suggestion for an alternative test case?


Repository:
  rL LLVM

https://reviews.llvm.org/D34069