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authorRobert Lougher <rob.lougher@gmail.com>2019-03-20 19:08:18 +0000
committerRobert Lougher <rob.lougher@gmail.com>2019-03-20 19:08:18 +0000
commitf2158a8ef06c87dc979b47e98dd2e8d8493c11ff (patch)
tree726ff37ba9534062a90cf36b146a49f57a0ff385 /llvm/lib/Passes
parent364cb6b5d70ab8aadb564b7385d500c519aa4dfa (diff)
downloadbcm5719-llvm-f2158a8ef06c87dc979b47e98dd2e8d8493c11ff.tar.gz
bcm5719-llvm-f2158a8ef06c87dc979b47e98dd2e8d8493c11ff.zip
Resubmit r356511 "[TailCallElim] Add tailcall elimination pass to LTO pipelines"
Failing LLD tests have been fixed in r356593. llvm-svn: 356594
Diffstat (limited to 'llvm/lib/Passes')
-rw-r--r--llvm/lib/Passes/PassBuilder.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index 2baff899010..ba0d6c2bd68 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -1185,6 +1185,10 @@ PassBuilder::buildLTODefaultPipeline(OptimizationLevel Level, bool DebugLogging,
// Break up allocas
FPM.addPass(SROA());
+ // LTO provides additional opportunities for tailcall elimination due to
+ // link-time inlining, and visibility of nocapture attribute.
+ FPM.addPass(TailCallElimPass());
+
// Run a few AA driver optimizations here and now to cleanup the code.
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
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