From 5fa635b5bf7240eb7ce9dc71db6470251ee8f389 Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Fri, 23 Mar 2012 23:22:59 +0000
Subject: [PATCH] add EP_OptimizerLast extension point

llvm-svn: 153353
---
 include/llvm/Transforms/IPO/PassManagerBuilder.h | 4 ++++
 lib/Transforms/IPO/PassManagerBuilder.cpp        | 1 +
 2 files changed, 5 insertions(+)

diff --git a/include/llvm/Transforms/IPO/PassManagerBuilder.h b/include/llvm/Transforms/IPO/PassManagerBuilder.h
index a1b4f5cd90b..734f37e52eb 100644
--- a/include/llvm/Transforms/IPO/PassManagerBuilder.h
+++ b/include/llvm/Transforms/IPO/PassManagerBuilder.h
@@ -73,6 +73,10 @@ public:
     /// cleanup-ish optimizations.
     EP_ScalarOptimizerLate,
 
+    /// EP_OptimizerLast -- This extension point allows adding passes that
+    /// run after everything else.
+    EP_OptimizerLast,
+
     /// EP_EnabledOnOptLevel0 - This extension point allows adding passes that
     /// should not be disabled by O0 optimization level. The passes will be
     /// inserted after the inlining pass.
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
index 84084374b34..243ba1a85bf 100644
--- a/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -202,6 +202,7 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
     if (OptLevel > 1)
       MPM.add(createConstantMergePass());     // Merge dup global constants
   }
+  addExtensionsToPM(EP_OptimizerLast, MPM);
 }
 
 void PassManagerBuilder::populateLTOPassManager(PassManagerBase &PM,