Add EP_CGSCCOptimizerLate extension point to PassManagerBuilder

The EP_CGSCCOptimizerLate extension point allows adding CallGraphSCC passes at the end of the main CallGraphSCC passes and before any function simplification passes run by CGPassManager. Patch by Gor Nishanov! Differential Revision: https://reviews.llvm.org/D22897 llvm-svn: 276953
llvm · Jul 28, 2016 · 6e9b47b · 6e9b47b
1 parent 0be7155
commit 6e9b47b
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diff --git a/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h b/llvm/include/llvm/Transforms/IPO/PassManagerBuilder.h
@@ -100,6 +100,11 @@ class PassManagerBuilder {
     /// peephole optimizations similar to the instruction combiner. These passes
     /// will be inserted after each instance of the instruction combiner pass.
     EP_Peephole,
+
+    /// EP_CGSCCOptimizerLate - This extension point allows adding CallGraphSCC
+    /// passes at the end of the main CallGraphSCC passes and before any
+    /// function simplification passes run by CGPassManager.
+    EP_CGSCCOptimizerLate,
   };
 
   /// The Optimization Level - Specify the basic optimization level.

diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -440,6 +440,7 @@ void PassManagerBuilder::populateModulePassManager(
   if (OptLevel > 2)
     MPM.add(createArgumentPromotionPass()); // Scalarize uninlined fn args
 
+  addExtensionsToPM(EP_CGSCCOptimizerLate, MPM);
   addFunctionSimplificationPasses(MPM);
 
   // FIXME: This is a HACK! The inliner pass above implicitly creates a CGSCC