emit an abort if calling an absolute address

1 files changed, 12 insertions, 13 deletions

diff --git a/lib/Target/JSBackend/JSBackend.cpp b/lib/Target/JSBackend/JSBackend.cpp
index dc2404866a..97f4be7c92 100644
--- a/lib/Target/JSBackend/JSBackend.cpp
+++ b/lib/Target/JSBackend/JSBackend.cpp
@@ -302,6 +302,18 @@ namespace {
         return getGlobalAddress(V->getName().str());
       }
     }
+
+    // Test whether the given value is known to be an absolute value or one we turn into an absolute value
+    bool isAbsolute(const Value *P) {
+      if (const IntToPtrInst *ITP = dyn_cast<IntToPtrInst>(P)) {
+        return isa<ConstantInt>(ITP->getOperand(0));
+      }
+      if (isa<ConstantPointerNull>(P) || isa<UndefValue>(P)) {
+        return true;
+      }
+      return false;
+    }
+
     std::string getPtrAsStr(const Value* Ptr) {
       Ptr = Ptr->stripPointerCasts();
       if (isa<const ConstantPointerNull>(Ptr) || isa<UndefValue>(Ptr)) return "0";
@@ -557,19 +569,6 @@ std::string JSWriter::getIMul(const Value *V1, const Value *V2) {
   return "Math_imul(" + getValueAsStr(V1) + ", " + getValueAsStr(V2) + ")|0"; // unknown or too large, emit imul
 }
 
-// Test whether the given value is known to be a null pointer.
-static bool isAbsolute(const Value *P) {
-  if (const IntToPtrInst *ITP = dyn_cast<IntToPtrInst>(P)) {
-    return isa<ConstantInt>(ITP->getOperand(0));
-  }
-
-  if (isa<ConstantPointerNull>(P)) {
-    return true;
-  }
-
-  return false;
-}
-
 std::string JSWriter::getLoad(const Instruction *I, const Value *P, Type *T, unsigned Alignment, char sep) {
   std::string Assign = getAssign(getJSName(I), I->getType());
   unsigned Bytes = T->getPrimitiveSizeInBits()/8;