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Tell the compiler that v4f is aligned

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It's guaranteed that this is now aligned on a 16-byte boundary.
This commit is contained in:
Kleis Auke Wolthuizen 2021-03-20 11:33:37 +01:00
parent 5ef9c84f97
commit e7faebf6af
2 changed files with 6 additions and 6 deletions
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10
configure.ac
View File

@ -272,7 +272,7 @@ AM_GLIB_GNU_GETTEXT
# [ax_gcc_version_option=yes], # [ax_gcc_version_option=yes],
# [ax_gcc_version_option=no] # [ax_gcc_version_option=no]
# ) # )
AC_MSG_CHECKING([for gcc version]) AC_MSG_CHECKING([for $CC version])
GCC_VERSION="" GCC_VERSION=""
version=$($CC -dumpversion) version=$($CC -dumpversion)
if test $? = 0; then if test $? = 0; then
@ -326,7 +326,7 @@ AC_TYPE_SIZE_T
# g++/gcc 4.x and 5.x have rather broken vector support ... 5.4.1 seems to # g++/gcc 4.x and 5.x have rather broken vector support ... 5.4.1 seems to
# work, but 5.4.0 fails to even compile # work, but 5.4.0 fails to even compile
AC_MSG_CHECKING([for gcc with working vector support]) AC_MSG_CHECKING([for $CC with working vector support])
if test x"$GCC_VERSION_MAJOR" != x"4" -a x"$GCC_VERSION_MAJOR" != x"5"; then if test x"$GCC_VERSION_MAJOR" != x"4" -a x"$GCC_VERSION_MAJOR" != x"5"; then
AC_MSG_RESULT([yes]) AC_MSG_RESULT([yes])
else else
@ -339,7 +339,7 @@ if test x"$ax_cv_have_var_attribute_vector_size" = x"yes"; then
AC_MSG_CHECKING([for C++ vector shuffle]) AC_MSG_CHECKING([for C++ vector shuffle])
AC_LANG_PUSH([C++]) AC_LANG_PUSH([C++])
AC_TRY_COMPILE([ AC_TRY_COMPILE([
typedef float v4f __attribute__((vector_size(4 * sizeof(float)))); typedef float v4f __attribute__((vector_size(4 * sizeof(float)),aligned(16)));
],[ ],[
v4f f; f[3] = 99; v4f f; f[3] = 99;
],[ ],[
@ -362,7 +362,7 @@ if test x"$have_vector_shuffle" = x"yes"; then
AC_MSG_CHECKING([for C++ vector arithmetic]) AC_MSG_CHECKING([for C++ vector arithmetic])
AC_LANG_PUSH([C++]) AC_LANG_PUSH([C++])
AC_TRY_COMPILE([ AC_TRY_COMPILE([
typedef float v4f __attribute__((vector_size(4 * sizeof(float)))); typedef float v4f __attribute__((vector_size(4 * sizeof(float)),aligned(16)));
],[ ],[
v4f f = {1, 2, 3, 4}; f *= 12.0; v4f f = {1, 2, 3, 4}; f *= 12.0;
v4f g = {5, 6, 7, 8}; f = g > 0 ? g : -1 * g; v4f g = {5, 6, 7, 8}; f = g > 0 ? g : -1 * g;
@ -382,7 +382,7 @@ if test x"$have_vector_arith" = x"yes"; then
AC_MSG_CHECKING([for C++ signed constants in vector templates]) AC_MSG_CHECKING([for C++ signed constants in vector templates])
AC_LANG_PUSH([C++]) AC_LANG_PUSH([C++])
AC_TRY_COMPILE([ AC_TRY_COMPILE([
typedef float v4f __attribute__((vector_size(4 * sizeof(float)))); typedef float v4f __attribute__((vector_size(4 * sizeof(float)),aligned(16)));
template <typename T> template <typename T>
static void static void
h( v4f B ) h( v4f B )

2
libvips/conversion/composite.cpp
View File

@ -85,7 +85,7 @@
#ifdef HAVE_VECTOR_ARITH #ifdef HAVE_VECTOR_ARITH
/* A vector of four floats. /* A vector of four floats.
*/ */
typedef float v4f __attribute__((vector_size(4 * sizeof(float)))); typedef float v4f __attribute__((vector_size(4 * sizeof(float)),aligned(16)));
#endif /*HAVE_VECTOR_ARITH*/ #endif /*HAVE_VECTOR_ARITH*/
typedef struct _VipsCompositeBase { typedef struct _VipsCompositeBase {