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

[Leonard Chan via Phabricator via cfe-commits]

leonardchan updated this revision to Diff 257800.
leonardchan marked an inline comment as done.
leonardchan edited the summary of this revision.

Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D76389

Files:
  llvm/lib/Passes/PassBuilder.cpp


Index: llvm/lib/Passes/PassBuilder.cpp
===================================================================
--- llvm/lib/Passes/PassBuilder.cpp
+++ llvm/lib/Passes/PassBuilder.cpp
@@ -440,7 +440,7 @@
 
   // Speculative execution if the target has divergent branches; otherwise nop.
   if (Level.getSpeedupLevel() > 1) {
-    FPM.addPass(SpeculativeExecutionPass());
+    FPM.addPass(SpeculativeExecutionPass(/*OnlyIfDivergentTarget=*/true));
 
     // Optimize based on known information about branches, and cleanup 
afterward.
     FPM.addPass(JumpThreadingPass());



Index: llvm/lib/Passes/PassBuilder.cpp
===================================================================
--- llvm/lib/Passes/PassBuilder.cpp
+++ llvm/lib/Passes/PassBuilder.cpp
@@ -440,7 +440,7 @@
 
   // Speculative execution if the target has divergent branches; otherwise nop.
   if (Level.getSpeedupLevel() > 1) {
-    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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