Reviewers: Mads Ager,

Description:
ARM: Don't try to flush the icache when there is nothing to flush

The simulator implementation of the icache did not like size being zero.

BUG=v8:1090

Please review this at http://codereview.chromium.org/6526052/

SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/

Affected files:
  M     src/arm/cpu-arm.cc


Index: src/arm/cpu-arm.cc
===================================================================
--- src/arm/cpu-arm.cc  (revision 6809)
+++ src/arm/cpu-arm.cc  (working copy)
@@ -50,6 +50,11 @@


 void CPU::FlushICache(void* start, size_t size) {
+  // Nothing to do flushing no instructions.
+  if (size == 0) {
+    return;
+  }
+
 #if defined (USE_SIMULATOR)
   // Not generating ARM instructions for C-code. This means that we are
   // building an ARM emulator based target.  We should notify the simulator


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