Author: Florian Hahn Date: 2020-12-07T19:08:40Z New Revision: 32825e8636d6832007f30ae46ffbae124020ad31
URL: https://github.com/llvm/llvm-project/commit/32825e8636d6832007f30ae46ffbae124020ad31 DIFF: https://github.com/llvm/llvm-project/commit/32825e8636d6832007f30ae46ffbae124020ad31.diff LOG: [ConstraintElimination] Tweak placement in pipeline. This patch adds the ConstraintElimination pass to the LTO pipeline and also runs it after SCCP in the function simplification pipeline. This increases the number of cases we can elimination. Pending further tuning. Added: Modified: llvm/lib/Transforms/IPO/PassManagerBuilder.cpp Removed: ################################################################################ diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp index e03015f8b0aa..e823a56073a4 100644 --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -470,6 +470,9 @@ void PassManagerBuilder::addFunctionSimplificationPasses( MPM.add(createMemCpyOptPass()); // Remove memcpy / form memset MPM.add(createSCCPPass()); // Constant prop with SCCP + if (EnableConstraintElimination) + MPM.add(createConstraintEliminationPass()); + // Delete dead bit computations (instcombine runs after to fold away the dead // computations, and then ADCE will run later to exploit any new DCE // opportunities that creates). @@ -1056,6 +1059,9 @@ void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) { if (EnableLoopInterchange) PM.add(createLoopInterchangePass()); + if (EnableConstraintElimination) + PM.add(createConstraintEliminationPass()); + // Unroll small loops PM.add(createSimpleLoopUnrollPass(OptLevel, DisableUnrollLoops, ForgetAllSCEVInLoopUnroll)); _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
