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ppc: fix vc1 inverse transform, unbreak build

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GCC 4.3 and later are more particular about signedness matching
in vector operations.  The operations under if(rangered) were
missing assignments and thus had no effect.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 381efba0ec)
This commit is contained in:
Mans Rullgard 2011-02-21 19:15:38 +00:00 committed by Michael Niedermayer
parent 2df9d0008e
commit e407f4173a
1 changed files with 17 additions and 17 deletions
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34
libavcodec/ppc/vc1dsp_altivec.c
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@ -146,7 +146,7 @@ static void vc1_inv_trans_8x8_altivec(DCTELEM block[64],
const vector signed int vec_1s = vec_splat_s32(1);
const vector unsigned int vec_1 = vec_splat_u32(1);
const vector unsigned short rangered_shift = vec_splat_u16(1);
const vector signed short signed_bias = vec_sl(vec_splat_u16(4),
const vector signed short signed_bias = vec_sl(vec_splat_s16(4),
vec_splat_u16(4));
src0 = vec_ld( 0, block);
@ -219,23 +219,23 @@ static void vc1_inv_trans_8x8_altivec(DCTELEM block[64],
if (rangered) {
if (!sign) {
vec_sub(src0, signed_bias);
vec_sub(src1, signed_bias);
vec_sub(src2, signed_bias);
vec_sub(src3, signed_bias);
vec_sub(src4, signed_bias);
vec_sub(src5, signed_bias);
vec_sub(src6, signed_bias);
vec_sub(src7, signed_bias);
src0 = vec_sub(src0, signed_bias);
src1 = vec_sub(src1, signed_bias);
src2 = vec_sub(src2, signed_bias);
src3 = vec_sub(src3, signed_bias);
src4 = vec_sub(src4, signed_bias);
src5 = vec_sub(src5, signed_bias);
src6 = vec_sub(src6, signed_bias);
src7 = vec_sub(src7, signed_bias);
}
vec_sl(src0, rangered_shift);
vec_sl(src1, rangered_shift);
vec_sl(src2, rangered_shift);
vec_sl(src3, rangered_shift);
vec_sl(src4, rangered_shift);
vec_sl(src5, rangered_shift);
vec_sl(src6, rangered_shift);
vec_sl(src7, rangered_shift);
src0 = vec_sl(src0, rangered_shift);
src1 = vec_sl(src1, rangered_shift);
src2 = vec_sl(src2, rangered_shift);
src3 = vec_sl(src3, rangered_shift);
src4 = vec_sl(src4, rangered_shift);
src5 = vec_sl(src5, rangered_shift);
src6 = vec_sl(src6, rangered_shift);
src7 = vec_sl(src7, rangered_shift);
}
vec_st(src0, 0, block);