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intel/compiler: implement conversions from 16-bit int/float to bool

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Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Iago Toral Quiroga 2018-03-07 11:12:18 +01:00
parent d5a419176f
commit 939501c8ed
1 changed files with 11 additions and 5 deletions
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16
src/intel/compiler/brw_fs_nir.cpp
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@ -1164,8 +1164,9 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
break;
case nir_op_i2b:
case nir_op_f2b:
if (nir_src_bit_size(instr->src[0].src) == 64) {
case nir_op_f2b: {
uint32_t bit_size = nir_src_bit_size(instr->src[0].src);
if (bit_size == 64) {
/* two-argument instructions can't take 64-bit immediates */
fs_reg zero;
fs_reg tmp;
@ -1187,13 +1188,18 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
bld.CMP(tmp, op[0], zero, BRW_CONDITIONAL_NZ);
bld.MOV(result, subscript(tmp, BRW_REGISTER_TYPE_UD, 0));
} else {
if (instr->op == nir_op_f2b) {
bld.CMP(result, op[0], brw_imm_f(0.0f), BRW_CONDITIONAL_NZ);
fs_reg zero;
if (bit_size == 32) {
zero = instr->op == nir_op_f2b ? brw_imm_f(0.0f) : brw_imm_d(0);
} else {
bld.CMP(result, op[0], brw_imm_d(0), BRW_CONDITIONAL_NZ);
assert(bit_size == 16);
zero = instr->op == nir_op_f2b ?
retype(brw_imm_w(0), BRW_REGISTER_TYPE_HF) : brw_imm_w(0);
}
bld.CMP(result, op[0], zero, BRW_CONDITIONAL_NZ);
}
break;
}
case nir_op_ftrunc:
inst = bld.RNDZ(result, op[0]);