From f2158a8ef06c87dc979b47e98dd2e8d8493c11ff Mon Sep 17 00:00:00 2001 From: Robert Lougher Date: Wed, 20 Mar 2019 19:08:18 +0000 Subject: Resubmit r356511 "[TailCallElim] Add tailcall elimination pass to LTO pipelines" Failing LLD tests have been fixed in r356593. llvm-svn: 356594 --- llvm/lib/Transforms/IPO/PassManagerBuilder.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'llvm/lib/Transforms') diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp index 0505135673b..9e241aa335a 100644 --- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -896,6 +896,10 @@ void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) { // Break up allocas PM.add(createSROAPass()); + // LTO provides additional opportunities for tailcall elimination due to + // link-time inlining, and visibility of nocapture attribute. + PM.add(createTailCallEliminationPass()); + // Run a few AA driven optimizations here and now, to cleanup the code. PM.add(createPostOrderFunctionAttrsLegacyPass()); // Add nocapture. PM.add(createGlobalsAAWrapperPass()); // IP alias analysis. -- cgit v1.2.3