Constrain register classes instead of emitting copies.

[oota-llvm.git] / lib / CodeGen / RegisterScavenging.cpp

diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp
index 9e9a145b0aa45ec1459070b20a500a4715624fce..ca02aa1b81436721f72eec90325ecdf7451f432e 100644 (file)
--- a/lib/CodeGen/RegisterScavenging.cpp
+++ b/lib/CodeGen/RegisterScavenging.cpp
@@ -206,6 +206,7 @@ void RegScavenger::forward() {
             break;
           }
         assert(SubUsed && "Using an undefined register!");
+        (void)SubUsed;
       }
       assert((!EarlyClobberRegs.test(Reg) || MI->isRegTiedToDefOperand(i)) &&
              "Using an early clobbered register!");