commit 4d6ccb5f68cd7c6418a209f1fa4dbade569e4493
author David Blaikie <dblaikie@gmail.com> Fri Jan 20 21:51:11 2012 +0000
committer David Blaikie <dblaikie@gmail.com> Fri Jan 20 21:51:11 2012 +0000
tree 9a48fa9f7f51fd635f6807ed7444fcdcad0e9bda
parent 0041d4d447c26825e566ba38a4fe301471fda1eb

More dead code removal (using -Wunreachable-code)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/ScalarEvolution.cpp

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index e4af225..caf3606 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -259,11 +259,9 @@
     return cast<SCEVUnknown>(this)->getType();
   case scCouldNotCompute:
     llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
-    return 0;
-  default: break;
+  default:
+    llvm_unreachable("Unknown SCEV kind!");
   }
-  llvm_unreachable("Unknown SCEV kind!");
-  return 0;
 }
 
 bool SCEV::isZero() const {
@@ -611,11 +609,8 @@
       }
 
       default:
-        break;
+        llvm_unreachable("Unknown SCEV kind!");
       }
-
-      llvm_unreachable("Unknown SCEV kind!");
-      return 0;
     }
   };
 }
@@ -5319,7 +5314,6 @@
   }
 
   llvm_unreachable("Unknown SCEV type!");
-  return 0;
 }
 
 /// getSCEVAtScope - This is a convenience function which does
@@ -5950,7 +5944,6 @@
   switch (Pred) {
   default:
     llvm_unreachable("Unexpected ICmpInst::Predicate value!");
-    break;
   case ICmpInst::ICMP_SGT:
     Pred = ICmpInst::ICMP_SLT;
     std::swap(LHS, RHS);
@@ -6801,11 +6794,8 @@
     return LoopInvariant;
   case scCouldNotCompute:
     llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
-    return LoopVariant;
-  default: break;
+  default: llvm_unreachable("Unknown SCEV kind!");
   }
-  llvm_unreachable("Unknown SCEV kind!");
-  return LoopVariant;
 }
 
 bool ScalarEvolution::isLoopInvariant(const SCEV *S, const Loop *L) {
@@ -6887,11 +6877,9 @@
     return ProperlyDominatesBlock;
   case scCouldNotCompute:
     llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
-    return DoesNotDominateBlock;
-  default: break;
+  default: 
+    llvm_unreachable("Unknown SCEV kind!");
   }
-  llvm_unreachable("Unknown SCEV kind!");
-  return DoesNotDominateBlock;
 }
 
 bool ScalarEvolution::dominates(const SCEV *S, const BasicBlock *BB) {
@@ -6937,11 +6925,9 @@
     return false;
   case scCouldNotCompute:
     llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
-    return false;
-  default: break;
+  default:
+    llvm_unreachable("Unknown SCEV kind!");
   }
-  llvm_unreachable("Unknown SCEV kind!");
-  return false;
 }
 
 void ScalarEvolution::forgetMemoizedResults(const SCEV *S) {