From a849604d0397bfb9b3ec8f3aaba44f810da176ef Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 15 Mar 2014 10:20:49 +0000
Subject: [PATCH] Remove dead functions from unreachable code analysis.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204004 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/ReachableCode.cpp | 44 ----------------------------------
 1 file changed, 44 deletions(-)

diff --git a/lib/Analysis/ReachableCode.cpp b/lib/Analysis/ReachableCode.cpp
index 71d41bb283..463883f826 100644
--- a/lib/Analysis/ReachableCode.cpp
+++ b/lib/Analysis/ReachableCode.cpp
@@ -30,50 +30,6 @@ using namespace clang;
 // Core Reachability Analysis routines.
 //===----------------------------------------------------------------------===//
 
-static bool bodyEndsWithNoReturn(const CFGBlock *B) {
-  for (CFGBlock::const_reverse_iterator I = B->rbegin(), E = B->rend();
-       I != E; ++I) {
-    if (Optional<CFGStmt> CS = I->getAs<CFGStmt>()) {
-      const Stmt *S = CS->getStmt();
-      if (const ExprWithCleanups *EWC = dyn_cast<ExprWithCleanups>(S))
-        S = EWC->getSubExpr();
-      if (const CallExpr *CE = dyn_cast<CallExpr>(S)) {
-        QualType CalleeType = CE->getCallee()->getType();
-        if (getFunctionExtInfo(*CalleeType).getNoReturn())
-          return true;
-      }
-      break;
-    }
-  }
-  return false;
-}
-
-static bool bodyEndsWithNoReturn(const CFGBlock::AdjacentBlock &AB) {
-  // If the predecessor is a normal CFG edge, then by definition
-  // the predecessor did not end with a 'noreturn'.
-  if (AB.getReachableBlock())
-    return false;
-
-  const CFGBlock *Pred = AB.getPossiblyUnreachableBlock();
-  assert(!AB.isReachable() && Pred);
-  return bodyEndsWithNoReturn(Pred);
-}
-
-static bool isBreakPrecededByNoReturn(const CFGBlock *B, const Stmt *S,
-                                      reachable_code::UnreachableKind &UK) {
-  if (!isa<BreakStmt>(S))
-    return false;
-
-  UK = reachable_code::UK_Break;
-
-  if (B->pred_empty())
-    return false;
-
-  assert(B->empty());
-  assert(B->pred_size() == 1);
-  return bodyEndsWithNoReturn(*B->pred_begin());
-}
-
 static bool isEnumConstant(const Expr *Ex) {
   const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(Ex);
   if (!DR)
-- 
2.40.0