+static inline nir_ssa_def *
+nir_iand_imm(nir_builder *build, nir_ssa_def *x, uint64_t y)
+{
+ assert(x->bit_size <= 64);
+ y &= BITFIELD64_MASK(x->bit_size);
+
+ if (y == 0) {
+ return nir_imm_intN_t(build, 0, x->bit_size);
+ } else if (y == BITFIELD64_MASK(x->bit_size)) {
+ return x;
+ } else {
+ return nir_iand(build, x, nir_imm_intN_t(build, y, x->bit_size));
+ }
+}
+
+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));
+ }
+}
+