Remove redundant calls to isMaterializable.

This removes calls to isMaterializable in the following cases:

* It was redundant with a call to isDeclaration now that isDeclaration returns
  the correct answer for materializable functions.
* It was followed by a call to Materialize. Just call Materialize and check EC.

llvm-svn: 221050
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index df17e75..e53cef1 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -337,11 +337,7 @@
   if (RelocM == Reloc::Static)
     return false;
 
-  // Materializable GVs (in JIT lazy compilation mode) do not require an extra
-  // load from stub.
-  bool isDecl = GV->hasAvailableExternallyLinkage();
-  if (GV->isDeclaration() && !GV->isMaterializable())
-    isDecl = true;
+  bool isDecl = GV->isDeclarationForLinker();
 
   if (!isTargetMachO()) {
     // Extra load is needed for all externally visible.