Add PM extension point EP_VectorizerStart

This extension point allows passes to be executed right before the vectorizer
and other highly target specific optimizations are run.

llvm-svn: 242389

2 files changed, 7 insertions, 0 deletions

diff --git a/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h b/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h
index 1334dd0da23..ef01fa35053 100644
--- a/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h
+++ b/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h
@@ -81,6 +81,11 @@ public:
     /// run after everything else.
     EP_OptimizerLast,
 
+    /// EP_VectorizerStart - This extension point allows adding optimization
+    /// passes before the vectorizer and other highly target specific
+    /// optimization passes are executed.
+    EP_VectorizerStart,
+
     /// 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/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
index 88e5e479136..4e290a2db82 100644
--- a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -318,6 +318,8 @@ void PassManagerBuilder::populateModulePassManager(
   if (RunFloat2Int)
     MPM.add(createFloat2IntPass());
 
+  addExtensionsToPM(EP_VectorizerStart, MPM);
+
   // Re-rotate loops in all our loop nests. These may have fallout out of
   // rotated form due to GVN or other transformations, and the vectorizer relies
   // on the rotated form. Disable header duplication at -Oz.