Frees up LR on arm for use by the register allocator.

runtime/vm/intermediate_language_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/cpu.h"
@@ skipping 5075 matching lines @@
     __ vsqrtd(result, val);
   } else if (kind() == MathUnaryInstr::kDoubleSquare) {
     const DRegister val = EvenDRegisterOf(locs()->in(0).fpu_reg());
     const DRegister result = EvenDRegisterOf(locs()->out(0).fpu_reg());
     __ vmuld(result, val, val);
   } else {
     ASSERT((kind() == MathUnaryInstr::kSin) ||
            (kind() == MathUnaryInstr::kCos));
     if (TargetCPUFeatures::hardfp_supported()) {
       __ CallRuntime(TargetFunction(), InputCount());
-      } else {
+    } else {
       // If we aren't doing "hardfp", then we have to move the double arguments
       // to the integer registers, and take the results from the integer
       // registers.
       __ vmovrrd(R0, R1, D0);
       __ vmovrrd(R2, R3, D1);
       __ CallRuntime(TargetFunction(), InputCount());
       __ vmovdrr(D0, R0, R1);
       __ vmovdrr(D1, R2, R3);
     }
   }
@@ skipping 1924 matching lines @@
   compiler->GenerateCall(token_pos(), &label, stub_kind_, locs());
 #if defined(DEBUG)
   __ LoadImmediate(R4, kInvalidObjectPointer);
   __ LoadImmediate(R5, kInvalidObjectPointer);
 #endif
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM