Refactor indirect call promotion profitability analysis (NFC)

Summary:
Refactored the profitability analysis out of the IC promotion pass and
into lib/Analysis so that it can be accessed by the summary index
builder in a follow-on patch to enable IC promotion in ThinLTO (D21932).

Reviewers: davidxl, xur

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D22182

llvm-svn: 275216

1 files changed, 0 insertions, 43 deletions

diff --git a/llvm/lib/Transforms/Instrumentation/IndirectCallSiteVisitor.h b/llvm/lib/Transforms/Instrumentation/IndirectCallSiteVisitor.h
deleted file mode 100644
index 71a8cb88632..00000000000
--- a/llvm/lib/Transforms/Instrumentation/IndirectCallSiteVisitor.h
+++ /dev/null
@@ -1,43 +0,0 @@
-//===-- IndirectCallSiteVisitor.h - indirect call-sites visitor -----------===//
-//
-//                      The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements defines a visitor class and a helper function that find
-// all indirect call-sites in a function.
-
-#include "llvm/IR/InstVisitor.h"
-#include <vector>
-
-namespace llvm {
-// Visitor class that finds all indirect call sites.
-struct PGOIndirectCallSiteVisitor
-    : public InstVisitor<PGOIndirectCallSiteVisitor> {
-  std::vector<Instruction *> IndirectCallInsts;
-  PGOIndirectCallSiteVisitor() {}
-
-  void visitCallSite(CallSite CS) {
-    if (CS.getCalledFunction() || !CS.getCalledValue())
-      return;
-    Instruction *I = CS.getInstruction();
-    if (CallInst *CI = dyn_cast<CallInst>(I)) {
-      if (CI->isInlineAsm())
-        return;
-    }
-    if (isa<Constant>(CS.getCalledValue()))
-      return;
-    IndirectCallInsts.push_back(I);
-  }
-};
-
-// Helper function that finds all indirect call sites.
-static inline std::vector<Instruction *> findIndirectCallSites(Function &F) {
-  PGOIndirectCallSiteVisitor ICV;
-  ICV.visit(F);
-  return ICV.IndirectCallInsts;
-}
-}