Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989

r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50265 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 20 deletions

diff --git a/include/llvm/Support/CFG.h b/include/llvm/Support/CFG.h
index f8cbeb0a50..0d49aecb09 100644
--- a/include/llvm/Support/CFG.h
+++ b/include/llvm/Support/CFG.h
@@ -34,17 +34,14 @@ public:
   typedef PredIterator<_Ptr,_USE_iterator> _Self;
   typedef typename super::pointer pointer;
 
-  inline void advancePastNonPreds() {
-    // Loop to ignore non predecessor uses (for example PHI nodes)...
-    while (!It.atEnd()) {
-      if (isa<TerminatorInst>(*It) || isa<BasicBlock>(*It))
-	break;
+  inline void advancePastNonTerminators() {
+    // Loop to ignore non terminator uses (for example PHI nodes)...
+    while (!It.atEnd() && !isa<TerminatorInst>(*It))
       ++It;
-    }
   }
 
   inline PredIterator(_Ptr *bb) : It(bb->use_begin()) {
-    advancePastNonPreds();
+    advancePastNonTerminators();
   }
   inline PredIterator(_Ptr *bb, bool) : It(bb->use_end()) {}
 
@@ -53,16 +50,13 @@ public:
 
   inline pointer operator*() const {
     assert(!It.atEnd() && "pred_iterator out of range!");
-    if (isa<TerminatorInst>(*It))      // not dyn_cast due to const-correctness
-      return cast<TerminatorInst>(*It)->getParent();
-
-    return cast<_Ptr>(*It);
+    return cast<TerminatorInst>(*It)->getParent();
   }
   inline pointer *operator->() const { return &(operator*()); }
 
   inline _Self& operator++() {   // Preincrement
     assert(!It.atEnd() && "pred_iterator out of range!");
-    ++It; advancePastNonPreds();
+    ++It; advancePastNonTerminators();
     return *this;
   }
 
@@ -106,8 +100,6 @@ public:
   inline SuccIterator(Term_ T, bool)                       // end iterator
     : Term(T), idx(Term->getNumSuccessors()) {
     assert(T && "getTerminator returned null!");
-    if (Term->getParent()->getUnwindDest())
-      ++idx;
   }
 
   inline const _Self &operator=(const _Self &I) {
@@ -123,12 +115,7 @@ public:
   inline bool operator==(const _Self& x) const { return idx == x.idx; }
   inline bool operator!=(const _Self& x) const { return !operator==(x); }
 
-  inline pointer operator*() const {
-    if (idx == Term->getNumSuccessors())
-      return Term->getParent()->getUnwindDest();
-
-    return Term->getSuccessor(idx);
-  }
+  inline pointer operator*() const { return Term->getSuccessor(idx); }
   inline pointer operator->() const { return operator*(); }
 
   inline _Self& operator++() { ++idx; return *this; } // Preincrement