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cell: Added FRC instruction

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This commit is contained in:
Jonathan White 2008-09-19 15:10:25 -06:00
parent 1031638c2d
commit 33bef5866c
1 changed files with 41 additions and 0 deletions
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41
src/gallium/drivers/cell/ppu/cell_gen_fp.c
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@ -886,7 +886,45 @@ emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
/* Convert int to float */
spe_csflt(gen->f, d_reg, d_reg, 0);
store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
free_itemps(gen);
}
}
return true;
}
/**
* Emit frac.
* Input - FLR(Input)
*/
static boolean
emit_FRC(struct codegen *gen, const struct tgsi_full_instruction *inst)
{
int ch;
spe_comment(gen->f, -4, "FLR:");
for (ch = 0; ch < 4; ch++) {
if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
int tmp_reg = get_itemp(gen);
/* If negative, subtract 1.0 */
spe_xor(gen->f, tmp_reg, tmp_reg, tmp_reg);
spe_fcgt(gen->f, d_reg, tmp_reg, s1_reg);
spe_selb(gen->f, tmp_reg, tmp_reg, get_const_one_reg(gen), d_reg);
spe_fs(gen->f, d_reg, s1_reg, tmp_reg);
/* Convert float to int */
spe_cflts(gen->f, d_reg, d_reg, 0);
/* Convert int to float */
spe_csflt(gen->f, d_reg, d_reg, 0);
/* d = s1 - FLR(s1) */
spe_fs(gen->f, d_reg, s1_reg, d_reg);
store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
free_itemps(gen);
@ -896,6 +934,7 @@ emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
return true;
}
/**
* Emit max. See emit_SGT for comments.
*/
@ -1111,6 +1150,8 @@ emit_instruction(struct codegen *gen,
return emit_MIN(gen, inst);
case TGSI_OPCODE_FLR:
return emit_FLR(gen, inst);
case TGSI_OPCODE_FRC:
return emit_FRC(gen, inst);
case TGSI_OPCODE_END:
return emit_END(gen);