From da3bc492d2438ac915e720c17b54d0d12ffd8a97 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Fri, 11 Dec 2009 15:16:22 +0000
Subject: scons: Tweak MSVC release options.

Enable whole program optimizations and fast math.
---
 scons/gallium.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/scons/gallium.py b/scons/gallium.py
index 0e5de0d0f8e..f4e82e8e0a5 100644
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -391,15 +391,15 @@ def generate(env):
         else:
             ccflags += [
                 '/O2', # optimize for speed
-                #'/fp:fast', # fast floating point 
+                '/GL', # enable whole program optimization
             ]
         ccflags += [
+            '/fp:fast', # fast floating point 
             '/W3', # warning level
             #'/Wp64', # enable 64 bit porting warnings
         ]
         if env['machine'] == 'x86':
             ccflags += [
-                #'/QIfist', # Suppress _ftol
                 #'/arch:SSE2', # use the SSE2 instructions
             ]
         if platform == 'windows':
@@ -477,6 +477,11 @@ def generate(env):
         ]
         # Handle circular dependencies in the libraries
         env['_LIBFLAGS'] = '-Wl,--start-group ' + env['_LIBFLAGS'] + ' -Wl,--end-group'
+    if msvc:
+        if not env['debug']:
+            # enable Link-time Code Generation
+            linkflags += ['/LTCG']
+            env.Append(ARFLAGS = ['/LTCG'])
     if platform == 'windows' and msvc:
         # See also:
         # - http://msdn2.microsoft.com/en-us/library/y0zzbyt4.aspx
-- 
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