[PATCH] D94691: [ARM] Don't run the block placement pass at O0

[Sam Tebbs via Phabricator via llvm-commits]

samtebbs created this revision.
samtebbs added reviewers: SjoerdMeijer, dmgreen, samparker.
Herald added subscribers: danielkiss, hiraditya, kristof.beyls.
samtebbs requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

The block placement pass shouldn't run unless optimisations are enabled.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94691

Files:
  llvm/lib/Target/ARM/ARMTargetMachine.cpp


Index: llvm/lib/Target/ARM/ARMTargetMachine.cpp
===================================================================
--- llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -553,7 +553,8 @@
     return MF.getSubtarget<ARMSubtarget>().isThumb2();
   }));
 
-  addPass(createARMBlockPlacementPass());
+  if (getOptLevel() != CodeGenOpt::None)
+    addPass(createARMBlockPlacementPass());
 
   // Don't optimize barriers at -O0.
   if (getOptLevel() != CodeGenOpt::None)


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