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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>
This commit is contained in:
Mans Rullgard 2011-02-21 19:15:38 +00:00
parent 0ac8e2bf2b
commit 381efba0ec
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);