[PATCH] D26806: [IRCE] Avoid loop optimizations on pre and post loops

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy accepted this revision.
sanjoy added a comment.
This revision is now accepted and ready to land.

lgtm with a test case and an inline comment



================
Comment at: lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp:427
+  MDs.push_back(DisableDistribution);
+  MDNode *NewLoopID = MDNode::get(Context, MDs);
+  // Set operand 0 to refer to the loop id itself.
----------------
I'd structure this a little differently -- I'd avoid the `SmallVector` and instead do:

```
MDNode *NewLoopID = MDNode::get(Context, {DisableUnroll, DisableVectorize, DisableLICMVersioning ...});
```



https://reviews.llvm.org/D26806