Removed gcc_version magic from our GYP files, we don't support GCC 4.4 anymore.

build/toolchain.gypi

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 12 matching lines @@
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Shared definitions for all V8-related targets.
 
 {
   'variables': {
     'msvs_use_common_release': 0,
-    'gcc_version%': 'unknown',
     'clang%': 0,
     'v8_target_arch%': '<(target_arch)',
     # Native Client builds currently use the V8 ARM JIT and
     # arm/simulator-arm.cc to defer the significant effort required
     # for NaCl JIT support. The nacl_target_arch variable provides
     # the 'true' target arch for places in this file that need it.
     # TODO(bradchen): get rid of nacl_target_arch when someday
     # NaCl V8 builds stop using the ARM simulator
     'nacl_target_arch%': 'none',     # must be set externally
 
@@ skipping 891 matching lines @@
               '-O0',
               '-O3', # TODO(2807) should be -O1.
               '-O2',
               '-Os',
             ],
             'cflags': [
               '-fdata-sections',
               '-ffunction-sections',
               '-O1', # TODO(2807) should be -O3.
             ],
-            '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
                'GCC_STRICT_ALIASING': 'YES',
             },
           }],
         ],
       },  # DebugBase1
       # Abstract configuration for v8_optimized_debug == 2.
@@ skipping 38 matching lines @@
             ],
             'conditions': [
               # TODO(crbug.com/272548): Avoid -O3 in NaCl
               ['nacl_target_arch=="none"', {
                 'cflags': ['-O3'],
                 'cflags!': ['-O2'],
                 }, {
                 'cflags': ['-O2'],
                 'cflags!': ['-O3'],
               }],
-              ['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
               'GCC_STRICT_ALIASING': 'YES',
             },
           }],
         ],
       },  # DebugBase2
@@ skipping 52 matching lines @@
           ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
             'cflags!': [
               '-Os',
             ],
             'cflags': [
               '-fdata-sections',
               '-ffunction-sections',
               '<(wno_array_bounds)',
             ],
             'conditions': [
-              [ 'gcc_version==44 and clang==0', {
-                'cflags': [
-                  # Avoid crashes with gcc 4.4 in the v8 test suite.
-                  '-fno-tree-vrp',
-                ],
-              }],
               # TODO(crbug.com/272548): Avoid -O3 in NaCl
               ['nacl_target_arch=="none"', {
                 'cflags': ['-O3'],
                 'cflags!': ['-O2'],
               }, {
                 'cflags': ['-O2'],
                 'cflags!': ['-O3'],
               }],
             ],
           }],
           ['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
 
               # -fstrict-aliasing.  Mainline gcc
               # enables this at -O2 and above,
               # but Apple gcc does not unless it
               # is specified explicitly.
               'GCC_STRICT_ALIASING': 'YES',
@@ skipping 20 matching lines @@
                 'OptimizeReferences': '2',
                 'EnableCOMDATFolding': '2',
               },
             },
           }],  # OS=="win"
         ],  # conditions
       },  # Release
     },  # configurations
   },  # target_defaults
 }