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nir/builder: add ishl_imm helper

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v2: add (y >= x->bit_size) condition (Caio)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13739>
This commit is contained in:
Lionel Landwerlin 2021-11-23 10:13:42 +02:00 • committed by Marge Bot
parent 3ab7f4471c
commit e227bb9fd5
1 changed files with 12 additions and 0 deletions
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12
src/compiler/nir/nir_builder.h
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@ -731,6 +731,18 @@ nir_iand_imm(nir_builder *build, nir_ssa_def *x, uint64_t y)
}
}
static inline nir_ssa_def *
nir_ishl_imm(nir_builder *build, nir_ssa_def *x, uint32_t y)
{
if (y == 0) {
return x;
} else if (y >= x->bit_size) {
return nir_imm_intN_t(build, 0, x->bit_size);
} else {
return nir_ishl(build, x, nir_imm_int(build, y));
}
}
static inline nir_ssa_def *
nir_ishr_imm(nir_builder *build, nir_ssa_def *x, uint32_t y)
{