Use -O2 instead -O3 for Android build.

It produces smaller binary with almost the same performance.

R=benm@chromium.org, jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15929009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15071 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

build/android.gypi

@@ -75,15 +75,8 @@
     ],
     'configurations': {
       'Release': {
-        'cflags!': [
-          '-O2',
-          '-Os',
-        ],
         'cflags': [
-          '-fdata-sections',
-          '-ffunction-sections',
           '-fomit-frame-pointer',
-          '-O3',
         ],
       },  # Release
     },  # configurations

build/common.gypi

@@ -528,8 +528,7 @@
           ['v8_enable_extra_checks==1', {
             'defines': ['ENABLE_EXTRA_CHECKS',],
           }],
-          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd" \
-            or OS=="android"', {
+          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
             'cflags!': [
               '-O2',
               '-Os',
@@ -548,6 +547,25 @@
               }],
             ],
           }],
+          ['OS=="android"', {
+            'cflags!': [
+              '-O3',
+              '-Os',
+            ],
+            'cflags': [
+              '-fdata-sections',
+              '-ffunction-sections',
+              '-O2',
+            ],
+            'conditions': [
+              [ 'gcc_version==44 and clang==0', {
+                'cflags': [
+                  # Avoid crashes with gcc 4.4 in the v8 test suite.
+                  '-fno-tree-vrp',
+                ],
+              }],
+            ],
+          }],
           ['OS=="mac"', {
             'xcode_settings': {
               'GCC_OPTIMIZATION_LEVEL': '3',  # -O3