[clang] [llvm] [WPD] Enable speculative devirtualization with LTO (PR #233380)

[via cfe-commits]

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@@ -1620,8 +1620,7 @@ PassBuilder::buildModuleOptimizationPipeline(OptimizationLevel Level,
     MPM.addPass(AssignGUIDPass());
     MPM.addPass(WholeProgramDevirtPass(
         /*ExportSummary*/ nullptr,
-        /*ImportSummary*/ nullptr,
-        /*DevirtSpeculatively*/ PTO.DevirtualizeSpeculatively));
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KRM7 wrote:

Is there a reason though we would want to keep both the `-enable-devirtualize-speculatively` and the `devirtualize-speculatively` backend flags? It seems like it would be simpler to just have one control everything. 

https://github.com/llvm/llvm-project/pull/233380