[PATCH] D76389: [NewPM] Run the Speculative Execution Pass only if the target has divergent branches

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added inline comments.


================
Comment at: llvm/include/llvm/Transforms/Scalar/SpeculativeExecution.h:97
+
+class SpeculativeExecutionIfHasBranchDivergencePass
+    : public SpeculativeExecutionPassImpl,
----------------
Still define a second pass


================
Comment at: llvm/lib/Passes/PassBuilder.cpp:435
   if (Level.getSpeedupLevel() > 1) {
-    FPM.addPass(SpeculativeExecutionPass());
+    FPM.addPass(SpeculativeExecutionIfHasBranchDivergencePass());
 
----------------
leonardchan wrote:
> arsenm wrote:
> > I don't expect this to be a separate pass, just added based on a divergent target
> Updated such that the current pass is used, although it's a bit more difficult to test since the same pass name will appear when dumping the passes.
There's a check for divergent branches in the builder so you don't need to run the pass at all


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76389/new/

https://reviews.llvm.org/D76389