diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2011-12-29 19:28:23 -0200 |
|---|---|---|
| committer | Qt by Nokia <qt-info@nokia.com> | 2012-03-28 21:24:43 +0200 |
| commit | d6d997a36fc76132021ea45646a0069a756a62ac (patch) | |
| tree | 3ca001f2a73dbaae2632e79ad44b3b688e4d154a /src | |
| parent | af3c7d35b6937d6b5ba94243f76b540e18a04567 (diff) | |
Ensure that qdrawhelper.cpp is compiled with vectorisation active
The GCC option -ftree-vectorize is enabled only at level -O3, so force
-O3 if this is an optimised build. Also, ensure that we're using SSE
for floating point math if we're in x86 (32-bit) builds.
No change is necessary for the Intel compiler, since it enables
vectorisation by default at any non-zero -O level.
These options are not possible with MSVC.
Change-Id: If1169a73cd8a3e8b34d9e21f281b78897b9aec3e
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 774678c67f..43c4781197 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -39,6 +39,15 @@ ** ****************************************************************************/ +#if defined(__OPTIMIZE__) && !defined(__INTEL_COMPILER) && defined(__GNUC__) \ + && (__GNUC__ * 100 + __GNUC_MINOR__ >= 404) +// GCC 4.4 supports #pragma GCC optimize and #pragma GCC target +# pragma GCC optimize "O3" +# if defined(__i386__) && defined(__SSE2__) && !defined(__SSE2_MATH__) +# pragma GCC target "fpmath=sse" +# endif +#endif + #include <qstylehints.h> #include <qguiapplication.h> #include <qatomic.h> |