[llvm] r257581 - [TableGen] Use std::remove_if instead of an n^2 loop. NFC

[Craig Topper via llvm-commits]

Author: ctopper
Date: Wed Jan 13 01:20:10 2016
New Revision: 257581

URL: http://llvm.org/viewvc/llvm-project?rev=257581&view=rev
Log:
[TableGen] Use std::remove_if instead of an n^2 loop. NFC

Modified:
    llvm/trunk/utils/TableGen/AsmWriterEmitter.cpp

Modified: llvm/trunk/utils/TableGen/AsmWriterEmitter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/AsmWriterEmitter.cpp?rev=257581&r1=257580&r2=257581&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/AsmWriterEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/AsmWriterEmitter.cpp Wed Jan 13 01:20:10 2016
@@ -478,14 +478,11 @@ void AsmWriterEmitter::EmitPrintInstruct
   }
 
   // Okay, delete instructions with no operand info left.
-  for (unsigned i = 0, e = Instructions.size(); i != e; ++i) {
-    // Entire instruction has been emitted?
-    AsmWriterInst &Inst = Instructions[i];
-    if (Inst.Operands.empty()) {
-      Instructions.erase(Instructions.begin()+i);
-      --i; --e;
-    }
-  }
+  auto I = std::remove_if(Instructions.begin(), Instructions.end(),
+                          [](AsmWriterInst &Inst) {
+                            return Inst.Operands.empty();
+                          });
+  Instructions.erase(I, Instructions.end());
 
 
   // Because this is a vector, we want to emit from the end.  Reverse all of the