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HalfFloat_SSE2 use movd from memory

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pshufd requires 16 byte aligned memory or a register.
Use movd to a register to avoid a segfault if memory for float
is misaligned

Bug: libyuv:759
Test: 32 bit build of LibYUVPlanarTest.TestHalfFloatPlane_16bit_denormal
Change-Id: I6fdcc4317453af5acd4700f9d46425bb2f4a205b
Reviewed-on: https://chromium-review.googlesource.com/840459
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
This commit is contained in:
Frank Barchard 2017-12-21 11:04:15 -08:00 committed by Commit Bot
parent 56eb5a4775
commit c67db60534
3 changed files with 4 additions and 7 deletions
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2
README.chromium
View File

@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 1684
Version: 1685
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 1684
#define LIBYUV_VERSION 1685
#endif // INCLUDE_LIBYUV_VERSION_H_

7
source/row_gcc.cc
View File

@ -5910,7 +5910,8 @@ static float kScaleBias = 1.9259299444e-34f;
void HalfFloatRow_SSE2(const uint16* src, uint16* dst, float scale, int width) {
scale *= kScaleBias;
asm volatile (
"pshufd $0x0,%3,%%xmm4 \n"
"movd %3,%%xmm4 \n"
"pshufd $0x0,%%xmm4,%%xmm4 \n"
"pxor %%xmm5,%%xmm5 \n"
"sub %0,%1 \n"
@ -5935,11 +5936,7 @@ void HalfFloatRow_SSE2(const uint16* src, uint16* dst, float scale, int width) {
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(width) // %2
#if defined(__x86_64__)
: "x"(scale) // %3
#else
: "m"(scale) // %3
#endif
: "memory", "cc",
"xmm2", "xmm3", "xmm4", "xmm5"
);