[llvm] r237301 - Add llvm::all_of which wraps std::all_of.

[Pete Cooper]

Author: pete
Date: Wed May 13 17:19:13 2015
New Revision: 237301

URL: http://llvm.org/viewvc/llvm-project?rev=237301&view=rev
Log:
Add llvm::all_of which wraps std::all_of.

This version doesn't need begin/end but can instead just take a type which has begin/end methods.

Use this to replace an eligible foreach loop in LoopInfo found by David Blaikie in r237224.

Reviewed by David Blaikie.

Modified:
    llvm/trunk/include/llvm/ADT/STLExtras.h
    llvm/trunk/lib/Analysis/LoopInfo.cpp

Modified: llvm/trunk/include/llvm/ADT/STLExtras.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/STLExtras.h?rev=237301&r1=237300&r2=237301&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/STLExtras.h (original)
+++ llvm/trunk/include/llvm/ADT/STLExtras.h Wed May 13 17:19:13 2015
@@ -18,6 +18,7 @@
 #define LLVM_ADT_STLEXTRAS_H
 
 #include "llvm/Support/Compiler.h"
+#include <algorithm> // for std::all_of
 #include <cassert>
 #include <cstddef> // for std::size_t
 #include <cstdlib> // for qsort
@@ -327,6 +328,14 @@ void DeleteContainerSeconds(Container &C
   C.clear();
 }
 
+/// Provide wrappers to std::all_of which take ranges instead of having to pass
+/// being/end explicitly.
+template<typename R, class UnaryPredicate>
+bool all_of(R &&Range, UnaryPredicate &&P) {
+  return std::all_of(Range.begin(), Range.end(),
+                     std::forward<UnaryPredicate>(P));
+}
+
 //===----------------------------------------------------------------------===//
 //     Extra additions to <memory>
 //===----------------------------------------------------------------------===//

Modified: llvm/trunk/lib/Analysis/LoopInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopInfo.cpp?rev=237301&r1=237300&r2=237301&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/LoopInfo.cpp (original)
+++ llvm/trunk/lib/Analysis/LoopInfo.cpp Wed May 13 17:19:13 2015
@@ -65,11 +65,7 @@ bool Loop::isLoopInvariant(const Value *
 /// hasLoopInvariantOperands - Return true if all the operands of the
 /// specified instruction are loop invariant.
 bool Loop::hasLoopInvariantOperands(const Instruction *I) const {
-  for (auto &Op : I->operands())
-    if (!isLoopInvariant(Op))
-      return false;
-
-  return true;
+  return all_of(I->operands(), [this](Value *V) { return isLoopInvariant(V); });
 }
 
 /// makeLoopInvariant - If the given value is an instruciton inside of the