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Loongson MMI: Merge with MIPS64/add auto-detection

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Modern Loongson processors are MIPS64-compatible, and MMI instructions
are now supported in the mainline of GCC.  Thus, this commit adds
compile-time and run-time auto-detection of MMI instructions and moves
the MMI SIMD extensions for libjpeg-turbo from simd/loongson/ to
simd/mips64/.  That will allow MMI and MSA instructions to co-exist
in the same build once #377 has been integrated.

Based on:
82953ddd61

Closes #383
This commit is contained in:
DRC
2019-12-17 14:18:35 -06:00
parent 52fef34928
commit 81b8c0eed5
20 changed files with 119 additions and 9 deletions
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28
simd/mips64/jcsample.h Normal file
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/*
* jcsample.h
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1996, Thomas G. Lane.
* For conditions of distribution and use, see the accompanying README.ijg
* file.
*/
LOCAL(void)
expand_right_edge(JSAMPARRAY image_data, int num_rows, JDIMENSION input_cols,
JDIMENSION output_cols)
{
register JSAMPROW ptr;
register JSAMPLE pixval;
register int count;
int row;
int numcols = (int)(output_cols - input_cols);
if (numcols > 0) {
for (row = 0; row < num_rows; row++) {
ptr = image_data[row] + input_cols;
pixval = ptr[-1];
for (count = numcols; count > 0; count--)
*ptr++ = pixval;
}
}
}