Disable MMX intrinsics in qcms for x64 earlier than MSVC 2012

third_party/qcms/qcms.gyp

Index: third_party/qcms/qcms.gyp
===================================================================
--- third_party/qcms/qcms.gyp	(revision 179897)
+++ third_party/qcms/qcms.gyp	(working copy)
@@ -33,9 +33,11 @@
       'variables': {
         'conditions': [
           # For x86, turn off SSE2 for non-CrOS *nix Chrome builds.
+          # MSVC x64 doesn't support MMX until 2012.
           ['disable_sse2==1 or \
             (branding=="Chrome" and target_arch=="ia32" and \
-             os_posix==1 and OS!="mac" and chromeos==0)', {
+             os_posix==1 and OS!="mac" and chromeos==0) or \
+            (OS=="win" and target_arch=="x64" and MSVS_VERSION<"2012")', {

[scottmg, 2013/02/01 01:18:42]

items = ["2008", "2008e", "2010", "2010e", "2012", "2012e"]
for a in items:
  for b in items:
    print a, b, a < b

confirms that "2012e" is ! < "2012". That's pretty subtle, so at least add a
comment to the effect that "this disables for all previous to 2012 including
2012e"

[jschuh, 2013/02/01 01:32:04]

I already TBR'd... but I will add your comment.

             'qcms_use_sse': 0,
           }, {
             'qcms_use_sse': 1,