}
}
+static inline nir_ssa_def *
+nir_ishr_imm(nir_builder *build, nir_ssa_def *x, uint32_t y)
+{
+ if (y == 0) {
+ return x;
+ } else {
+ return nir_ishr(build, x, nir_imm_int(build, y));
+ }
+}
+
+static inline nir_ssa_def *
+nir_ushr_imm(nir_builder *build, nir_ssa_def *x, uint32_t y)
+{
+ if (y == 0) {
+ return x;
+ } else {
+ return nir_ushr(build, x, nir_imm_int(build, y));
+ }
+}
+
+static inline nir_ssa_def *
+nir_udiv_imm(nir_builder *build, nir_ssa_def *x, uint64_t y)
+{
+ assert(x->bit_size <= 64);
+ y &= BITFIELD64_MASK(x->bit_size);
+
+ if (y == 1) {
+ return x;
+ } else if (util_is_power_of_two_nonzero(y)) {
+ return nir_ushr_imm(build, x, ffsll(y) - 1);
+ } else {
+ return nir_udiv(build, x, nir_imm_intN_t(build, y, x->bit_size));
+ }
+}
+
static inline nir_ssa_def *
nir_pack_bits(nir_builder *b, nir_ssa_def *src, unsigned dest_bit_size)
{
/* If we got here, we have no dedicated unpack opcode. */
nir_ssa_def *dest_comps[NIR_MAX_VEC_COMPONENTS];
for (unsigned i = 0; i < dest_num_components; i++) {
- nir_ssa_def *val = nir_ushr(b, src, nir_imm_int(b, i * dest_bit_size));
+ nir_ssa_def *val = nir_ushr_imm(b, src, i * dest_bit_size);
dest_comps[i] = nir_u2u(b, val, dest_bit_size);
}
return nir_vec(b, dest_comps, dest_num_components);