Implement qt_memfill32 with Neon.

This patch introduce a implementation of qt_memfill32 with the Neon
instructions set from ARMv7.

The loop is unrolled 1 time to get better performance.

This implementation of memfill is 330% faster on the N900.

Reviewed-by: Samuel Rødal

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/painting/qdrawhelper_neon_p.h b/src/gui/painting/qdrawhelper_neon_p.h
index 182c936627..451edbc36b 100644
--- a/src/gui/painting/qdrawhelper_neon_p.h
+++ b/src/gui/painting/qdrawhelper_neon_p.h
@@ -120,6 +120,7 @@ void qt_transform_image_rgb16_on_rgb16_neon(uchar *destPixels, int dbpl,
                                             const QTransform &targetRectTransform,
                                             int const_alpha);
 
+void qt_memfill32_neon(quint32 *dest, quint32 value, int count);
 void qt_memrotate90_16_neon(const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl);
 void qt_memrotate270_16_neon(const uchar *srcPixels, int w, int h, int sbpl, uchar *destPixels, int dbpl);