diff options
Diffstat (limited to 'llvm/lib/Transforms/IPO/PassManagerBuilder.cpp')
| -rw-r--r-- | llvm/lib/Transforms/IPO/PassManagerBuilder.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp index 16ce04b0e80..b4af849baf3 100644 --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -371,10 +371,13 @@ void PassManagerBuilder::populateModulePassManager( MPM.add(createCFGSimplificationPass()); // Clean up after IPCP & DAE } - if (!PerformThinLTO) + if (!PerformThinLTO) { /// PGO instrumentation is added during the compile phase for ThinLTO, do /// not run it a second time addPGOInstrPasses(MPM); + // Indirect call promotion that promotes intra-module targets only. + MPM.add(createPGOIndirectCallPromotionPass()); + } if (EnableNonLTOGlobalsModRef) // We add a module alias analysis pass here. In part due to bugs in the @@ -585,6 +588,12 @@ void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) { // Infer attributes about declarations if possible. PM.add(createInferFunctionAttrsLegacyPass()); + // Indirect call promotion. This should promote all the targets that are left + // by the earlier promotion pass that promotes intra-module targets. + // This two-step promotion is to save the compile time. For LTO, it should + // produce the same result as if we only do promotion here. + PM.add(createPGOIndirectCallPromotionPass(true)); + // Propagate constants at call sites into the functions they call. This // opens opportunities for globalopt (and inlining) by substituting function // pointers passed as arguments to direct uses of functions. |
