diff options
| author | Ian Romanick <[email protected]> | 2018-09-11 00:13:36 -0700 |
|---|---|---|
| committer | Marge Bot <[email protected]> | 2020-01-23 00:18:57 +0000 |
| commit | 21f0d020fe2518da008c86cb111579e7f0e636b5 (patch) | |
| tree | 36f136e8b2125ddf08d768741e58534cbc66b87a /src/compiler | |
| parent | cb518df775f222e34a4e724be2fa825df9388b0a (diff) | |
nir: Add new instructions for INTEL_shader_integer_functions2
uctz isn't added because it will implemented in the GLSL path and the
SPIR-V path using other pre-existing instructions.
v2: Avoid signed integer overflow for uabs_isub(0, INT_MIN). Noticed by
Caio.
v3: Alternate fix for signed integer overflow for abs_sub(0, INT_MIN).
I tried the previous methon in a small test program with -ftrapv, and it
failed.
Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]> [v1]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/767>
Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/nir/nir_opcodes.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py index 86485e39508..bee7322b642 100644 --- a/src/compiler/nir/nir_opcodes.py +++ b/src/compiler/nir/nir_opcodes.py @@ -419,6 +419,15 @@ for (int bit = bit_size - 1; bit >= 0; bit--) { } """) +unop("uclz", tuint32, """ +int bit; +for (bit = bit_size - 1; bit >= 0; bit--) { + if ((src0 & (1u << bit)) != 0) + break; +} +dst = (unsigned)(31 - bit); +""") + unop("ifind_msb", tint32, """ dst = -1; for (int bit = 31; bit >= 0; bit--) { @@ -586,6 +595,11 @@ if (nir_is_rounding_mode_rtz(execution_mode, bit_size)) { } """) binop("isub", tint, "", "src0 - src1") +binop_convert("uabs_isub", tuint, tint, "", """ + src1 > src0 ? (uint64_t) src1 - (uint64_t) src0 + : (uint64_t) src0 - (uint64_t) src1 +""") +binop("uabs_usub", tuint, "", "(src1 > src0) ? (src1 - src0) : (src0 - src1)") binop("fmul", tfloat, _2src_commutative + associative, """ if (nir_is_rounding_mode_rtz(execution_mode, bit_size)) { @@ -653,6 +667,9 @@ uint64_t mask = (1 << (bit_size / 2)) - 1; dst = ((uint64_t)src0 & mask) * ((uint64_t)src1 & mask); """) +# Multiply 32-bits with low 16-bits. +binop("imul_32x16", tint32, "", "src0 * (int16_t) src1") +binop("umul_32x16", tuint32, "", "src0 * (uint16_t) src1") binop("fdiv", tfloat, "", "src0 / src1") binop("idiv", tint, "", "src1 == 0 ? 0 : (src0 / src1)") |