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ppc: fix vc1 inverse transform, unbreak build 

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);