commit c1c502b85b8bd38188f9232a781fecf572c7c0ca
author Yaowu Xu <yaowu@google.com> Wed Dec 14 11:50:56 2016 -0800
committer Yaowu Xu <yaowu@google.com> Wed Dec 14 22:33:40 2016 +0000
tree 4cf2233897ce4553f9e6ae4d0ada57f9c408f368
parent 45dc597ab1e9ead1689e7baf9276de63fa2dd1e6

Align temp buffer to 16 byte boundary

The optimized instrinsics require the buffer to be aligned on 16 byte
boundaries. The commit fixes segfaults caused by unaligned access.

Change-Id: I07fc242e43070bb8829871c50da52f50e60246a9

av1/common/x86/av1_fwd_txfm2d_sse4.c

diff --git a/av1/common/x86/av1_fwd_txfm2d_sse4.c b/av1/common/x86/av1_fwd_txfm2d_sse4.c
index 1883919..78c2613 100644
--- a/av1/common/x86/av1_fwd_txfm2d_sse4.c
+++ b/av1/common/x86/av1_fwd_txfm2d_sse4.c
@@ -66,7 +66,7 @@
 
 void av1_fwd_txfm2d_32x32_sse4_1(const int16_t *input, int32_t *output,
                                  int stride, int tx_type, int bd) {
-  int32_t txfm_buf[1024];
+  DECLARE_ALIGNED(16, int32_t, txfm_buf[1024]);
   TXFM_2D_FLIP_CFG cfg = av1_get_fwd_txfm_cfg(tx_type, TX_32X32);
   (void)bd;
   fwd_txfm2d_sse4_1(input, output, stride, cfg.cfg, txfm_buf);
@@ -74,7 +74,7 @@
 
 void av1_fwd_txfm2d_64x64_sse4_1(const int16_t *input, int32_t *output,
                                  int stride, int tx_type, int bd) {
-  int32_t txfm_buf[4096];
+  DECLARE_ALIGNED(16, int32_t, txfm_buf[4096]);
   TXFM_2D_FLIP_CFG cfg = av1_get_fwd_txfm_64x64_cfg(tx_type);
   (void)bd;
   fwd_txfm2d_sse4_1(input, output, stride, cfg.cfg, txfm_buf);