auto merge of #6550 : Aatch/rust/atomic-load, r=thestinger

This closes #6548

The change makes it match the standard Load signature.

src/librustc/lib/llvm.rs

@@ -1566,6 +1566,7 @@ pub unsafe fn LLVMBuildPtrDiff(B: BuilderRef,
         /* Atomic Operations */
         pub unsafe fn LLVMBuildAtomicLoad(B: BuilderRef,
                                           PointerVal: ValueRef,
+                                          Name: *c_char,
                                           Order: AtomicOrdering)
                                        -> ValueRef;
 

src/librustc/middle/trans/build.rs

@@ -544,7 +544,7 @@ pub fn AtomicLoad(cx: block, PointerVal: ValueRef, order: AtomicOrdering) -> Val
             return llvm::LLVMGetUndef(ccx.int_type);
         }
         count_insn(cx, "load.atomic");
-        return llvm::LLVMBuildAtomicLoad(B(cx), PointerVal, order);
+        return llvm::LLVMBuildAtomicLoad(B(cx), PointerVal, noname(), order);
     }
 }
 

src/rustllvm/RustWrapper.cpp

@@ -553,7 +553,7 @@ extern "C" LLVMValueRef LLVMBuildAtomicLoad(LLVMBuilderRef B,
     li->setVolatile(true);
     li->setAtomic(order);
     li->setAlignment(sizeof(intptr_t));
-    return wrap(unwrap(B)->Insert(li));
+    return wrap(unwrap(B)->Insert(li, Name));
 }
 
 extern "C" LLVMValueRef LLVMBuildAtomicStore(LLVMBuilderRef B,