remove a bunch of extraneous LLVMContext arguments
from various APIs, addressing PR5325.

llvm-svn: 86231
diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp
index 10c9ec6..f134946 100644
--- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp
+++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp
@@ -1044,7 +1044,7 @@
   BI = NewBB->begin();
   for (BasicBlock::iterator E = NewBB->end(); BI != E; ) {
     Instruction *Inst = BI++;
-    if (Constant *C = ConstantFoldInstruction(Inst, BB->getContext(), TD)) {
+    if (Constant *C = ConstantFoldInstruction(Inst, TD)) {
       Inst->replaceAllUsesWith(C);
       Inst->eraseFromParent();
       continue;