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authorJosé Fonseca <jfonseca@vmware.com>2014-11-25 22:15:40 +0000
committerJosé Fonseca <jfonseca@vmware.com>2014-11-26 20:25:12 +0000
commitaef3a01d579214664cf2da58b0e4e1daf325a37e (patch)
tree39061cdedce1ca924e37272b62de5b9c24c76375
parent0473577f91c1e7fd96c6229eae6132c6a46b1fa7 (diff)
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scons: Generate SSE2 floating-point arithmetic.
- SSE2 is available on all x86 processors we care about. - It's recommended by Intel: https://software.intel.com/en-us/blogs/2012/09/26/gcc-x86-performance-hints - And has been the default since MSVC 2012: http://msdn.microsoft.com/en-us/library/7t5yh4fd(v=vs.110).aspx Reviewed-by: Brian Paul <brianp@vmware.com> Reviewed-by: Roland Scheidegger <sroland@vmware.com>
-rwxr-xr-xscons/gallium.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/scons/gallium.py b/scons/gallium.py
index fe800fa..8e2090b 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -390,7 +390,7 @@ def generate(env):
ccflags += [
'-mstackrealign', # ensure stack is aligned
'-msse', '-msse2', # enable SIMD intrinsics
- #'-mfpmath=sse',
+ '-mfpmath=sse', # generate SSE floating-point arithmetic
]
if platform in ['windows', 'darwin']:
# Workaround http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37216
@@ -469,7 +469,7 @@ def generate(env):
]
if env['machine'] == 'x86':
ccflags += [
- #'/arch:SSE2', # use the SSE2 instructions
+ '/arch:SSE2', # use the SSE2 instructions (default since MSVC 2012)
]
if platform == 'windows':
ccflags += [