llvm.global_[cd]tor is defined to be either external, or appending with an array
of { i32, void ()* }. Teach the verifier to verify that, deleting copies of
checks strewn about.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129128 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index 438e119..13e07ac 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -313,13 +313,9 @@
 
   // Should be an array of '{ i32, void ()* }' structs.  The first value is
   // the init priority, which we ignore.
-  ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
-  if (!InitList) return;
+  ConstantArray *InitList = cast<ConstantArray>(GV->getInitializer());
   for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
-    ConstantStruct *CS =
-      dyn_cast<ConstantStruct>(InitList->getOperand(i));
-    if (!CS) continue;
-    if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
+    ConstantStruct *CS = cast<ConstantStruct>(InitList->getOperand(i));
 
     Constant *FP = CS->getOperand(1);
     if (FP->isNullValue())