[PATCH] D82735: [PM] Fix new PM to perform SpeculativeExecution as in old PM

[Daniil Fukalov via Phabricator via llvm-commits]

dfukalov created this revision.
dfukalov added a reviewer: chandlerc.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

Old PM runs SpeculativeExecutionPass for targets that have divergent branches.
It uses `createSpeculativeExecutionIfHasBranchDivergencePass` that creates
the pass with `OnlyIfDivergentTarget=true`, whereas new PM just created the
pass with default `OnlyIfDivergentTarget=fase` so it unexpectedly runs and
causes buildbot test fails.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82735

Files:
  llvm/lib/Passes/PassBuilder.cpp


Index: llvm/lib/Passes/PassBuilder.cpp
===================================================================
--- llvm/lib/Passes/PassBuilder.cpp
+++ llvm/lib/Passes/PassBuilder.cpp
@@ -584,7 +584,7 @@
   }
 
   // Speculative execution if the target has divergent branches; otherwise nop.
-  FPM.addPass(SpeculativeExecutionPass());
+  FPM.addPass(SpeculativeExecutionPass(/* OnlyIfDivergentTarget =*/true));
 
   // Optimize based on known information about branches, and cleanup afterward.
   FPM.addPass(JumpThreadingPass());


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