From 044eb2f6afba375a914ac9d8024f8f5142bb912e Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Mon, 18 Dec 2017 20:10:56 +0000
Subject: Vendor import of llvm trunk r321017:
 https://llvm.org/svn/llvm-project/llvm/trunk@321017

---
 include/llvm/Transforms/Utils/FunctionComparator.h | 29 +++++++++++++++++-----
 1 file changed, 23 insertions(+), 6 deletions(-)

(limited to 'include/llvm/Transforms/Utils/FunctionComparator.h')

diff --git a/include/llvm/Transforms/Utils/FunctionComparator.h b/include/llvm/Transforms/Utils/FunctionComparator.h
index b0f10eafaa95f..7698a068717a9 100644
--- a/include/llvm/Transforms/Utils/FunctionComparator.h
+++ b/include/llvm/Transforms/Utils/FunctionComparator.h
@@ -15,10 +15,10 @@
 #ifndef LLVM_TRANSFORMS_UTILS_FUNCTIONCOMPARATOR_H
 #define LLVM_TRANSFORMS_UTILS_FUNCTIONCOMPARATOR_H
 
-#include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/IR/Function.h"
+#include "llvm/IR/Attributes.h"
+#include "llvm/IR/Instructions.h" 
 #include "llvm/IR/Operator.h"
 #include "llvm/IR/ValueMap.h"
 #include "llvm/Support/AtomicOrdering.h"
@@ -28,7 +28,17 @@
 
 namespace llvm {
 
-class GetElementPtrInst;
+class APFloat;
+class APInt;
+class BasicBlock;
+class Constant;
+class Function;
+class GlobalValue;
+class InlineAsm;
+class Instruction;
+class MDNode;
+class Type;
+class Value;
 
 /// GlobalNumberState assigns an integer to each global value in the program,
 /// which is used by the comparison routine to order references to globals. This
@@ -43,14 +53,16 @@ class GetElementPtrInst;
 /// compare those, but this would not work for stripped bitcodes or for those
 /// few symbols without a name.
 class GlobalNumberState {
-  struct Config : ValueMapConfig<GlobalValue*> {
+  struct Config : ValueMapConfig<GlobalValue *> {
     enum { FollowRAUW = false };
   };
+
   // Each GlobalValue is mapped to an identifier. The Config ensures when RAUW
   // occurs, the mapping does not change. Tracking changes is unnecessary, and
   // also problematic for weak symbols (which may be overwritten).
-  typedef ValueMap<GlobalValue *, uint64_t, Config> ValueNumberMap;
+  using ValueNumberMap = ValueMap<GlobalValue *, uint64_t, Config>;
   ValueNumberMap GlobalNumbers;
+
   // The next unused serial number to assign to a global.
   uint64_t NextNumber = 0;
 
@@ -66,6 +78,10 @@ public:
     return MapIter->second;
   }
 
+  void erase(GlobalValue *Global) {
+    GlobalNumbers.erase(Global);
+  }
+
   void clear() {
     GlobalNumbers.clear();
   }
@@ -83,9 +99,10 @@ public:
 
   /// Test whether the two functions have equivalent behaviour.
   int compare();
+
   /// Hash a function. Equivalent functions will have the same hash, and unequal
   /// functions will have different hashes with high probability.
-  typedef uint64_t FunctionHash;
+  using FunctionHash = uint64_t;
   static FunctionHash functionHash(Function &);
 
 protected:
-- 
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