[PATCH] D134084: [LV] Remove FIXME about NoImplicitFloat. NFC

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Sep 16 14:56:24 PDT 2022


craig.topper created this revision.
craig.topper added reviewers: efriedma, fhahn, RKSimon, nikic, reames.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
craig.topper requested review of this revision.
Herald added a subscriber: pcwang-thead.
Herald added a project: LLVM.

My understanding is that NoImplicitFloat, despite it's name, is
supposed to disable all vectors not just float vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134084

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp


Index: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -10234,10 +10234,8 @@
     }
   }
 
-  // Check the function attributes to see if implicit floats are allowed.
-  // FIXME: This check doesn't seem possibly correct -- what if the loop is
-  // an integer loop and the vector instructions selected are purely integer
-  // vector instructions?
+  // Check the function attributes to see if implicit floats or vectors are
+  // allowed.
   if (F->hasFnAttribute(Attribute::NoImplicitFloat)) {
     reportVectorizationFailure(
         "Can't vectorize when the NoImplicitFloat attribute is used",


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