pan/bi: Generate builder routines
To simplify construction of Bifrost IR. Ideas from NIR's builder, as well as IBC. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8135>
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Alyssa Rosenzweig
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# Copyright (C) 2020 Collabora, Ltd.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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SKIP = set(["lane", "lanes", "lanes", "replicate", "swz", "widen", "swap", "neg", "abs", "not", "sign", "extend", "divzero", "clamp", "sem", "not_result", "skip"])
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TEMPLATE = """
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#ifndef _BI_BUILDER_H_
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#define _BI_BUILDER_H_
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#include "compiler.h"
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<%
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def typesize(opcode):
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if opcode[-3:] == '128':
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return 128
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if opcode[-2:] == '48':
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return 48
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elif opcode[-1] == '8':
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return 8
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else:
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try:
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return int(opcode[-2:])
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except:
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return None
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%>
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% for opcode in ops:
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static inline
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bi_instr * bi_${opcode.replace('.', '_').lower()}_to(${signature(ops[opcode], 1, modifiers)})
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{
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bi_instr *I = rzalloc(b->shader, bi_instr);
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I->op = BI_OPCODE_${opcode.replace('.', '_').upper()};
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I->dest[0] = dest0;
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% for src in range(src_count(ops[opcode])):
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I->src[${src}] = src${src};
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% endfor
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% for mod in ops[opcode]["modifiers"]:
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% if mod[0:-1] not in SKIP and mod not in SKIP:
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I->${mod} = ${mod};
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% endif
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% endfor
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% for imm in ops[opcode]["immediates"]:
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I->${imm} = ${imm};
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% endfor
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bi_builder_insert(&b->cursor, I);
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return I;
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}
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% if opcode.split(".")[0] not in ["JUMP", "BRANCHZ", "BRANCH"]:
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static inline
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bi_index bi_${opcode.replace('.', '_').lower()}(${signature(ops[opcode], 0, modifiers)})
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{
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return (bi_${opcode.replace('.', '_').lower()}_to(${arguments(ops[opcode], 1)}))->dest[0];
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}
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%endif
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<%
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common_op = opcode.split('.')[0]
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variants = [a for a in ops.keys() if a.split('.')[0] == common_op]
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signatures = [signature(ops[op], 0, modifiers, sized=True) for op in variants]
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homogenous = all([sig == signatures[0] for sig in signatures])
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sizes = [typesize(x) for x in variants]
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last = opcode == variants[-1]
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%>
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% if homogenous and len(variants) > 1 and last:
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% for (suffix, temp, dests, ret) in (('_to', False, 1, 'instr *'), ('', True, 0, 'index')):
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% if not temp or common_op not in ["JUMP", "BRANCHZ", "BRANCH"]:
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static inline
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bi_${ret} bi_${common_op.replace('.', '_').lower()}${suffix}(${signature(ops[opcode], dests, modifiers, sized=True)})
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{
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% for i, (variant, size) in enumerate(zip(variants, sizes)):
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${"else " if i > 0 else ""} if (bitsize == ${size})
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return (bi_${variant.replace('.', '_').lower()}_to(${arguments(ops[opcode], 1, temp_dest = temp)}))${"->dest[0]" if temp else ""};
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% endfor
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else
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unreachable("Invalid bitsize for ${common_op}");
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}
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%endif
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%endfor
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%endif
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%endfor
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#endif"""
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import sys
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from bifrost_isa import *
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from mako.template import Template
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instructions = parse_instructions(sys.argv[1], include_pseudo = True)
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ir_instructions = partition_mnemonics(instructions)
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modifier_lists = order_modifiers(ir_instructions)
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# Generate type signature for a builder routine
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def should_skip(mod):
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return mod in SKIP or mod[0:-1] in SKIP
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def modifier_signature(op):
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return sorted([m for m in op["modifiers"].keys() if not should_skip(m)])
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def signature(op, dest_count, modifiers, sized = False):
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return ", ".join(
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["bi_builder *b"] +
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(["unsigned bitsize"] if sized else []) +
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["bi_index dest{}".format(i) for i in range(dest_count)] +
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["bi_index src{}".format(i) for i in range(src_count(op))] +
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["{} {}".format(
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"bool" if len(modifiers[T[0:-1]] if T[-1] in "0123" else modifiers[T]) == 2 else
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"enum bi_" + T[0:-1] if T[-1] in "0123" else
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"enum bi_" + T,
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T) for T in modifier_signature(op)] +
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["uint32_t {}".format(imm) for imm in op["immediates"]])
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def arguments(op, dest_count, temp_dest = True):
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return ", ".join(
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["b"] +
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["bi_temp(b->shader)" if temp_dest else 'dest{}'.format(i) for i in range(dest_count)] +
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["src{}".format(i) for i in range(src_count(op))] +
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modifier_signature(op) +
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op["immediates"])
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print(Template(COPYRIGHT + TEMPLATE).render(ops = ir_instructions, modifiers = modifier_lists, signature = signature, arguments = arguments, src_count = src_count, SKIP = SKIP))
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@ -101,6 +101,20 @@ idep_bi_opcodes_h = declare_dependency(
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include_directories : include_directories('.'),
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)
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bi_builder_h = custom_target(
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'bi_builder.h',
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input : ['bi_builder.h.py', 'ISA.xml'],
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output : 'bi_builder.h',
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command : [prog_python, '@INPUT@'],
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capture : true,
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depend_files : files('bifrost_isa.py'),
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)
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idep_bi_builder_h = declare_dependency(
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sources : [bi_builder_h],
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include_directories : include_directories('.'),
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)
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libpanfrost_bifrost_disasm = static_library(
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'panfrost_bifrost_disasm',
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['disassemble.c', 'bi_print_common.c', bifrost_gen_disasm_c],
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@ -116,7 +130,7 @@ libpanfrost_bifrost = static_library(
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'panfrost_bifrost',
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[libpanfrost_bifrost_files, bifrost_nir_algebraic_c, bi_opcodes_c, bi_printer_c],
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include_directories : [inc_include, inc_src, inc_mapi, inc_mesa, inc_gallium, inc_gallium_aux, inc_panfrost_hw],
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dependencies: [idep_nir, idep_bi_generated_pack_h, idep_bi_opcodes_h],
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dependencies: [idep_nir, idep_bi_generated_pack_h, idep_bi_opcodes_h, idep_bi_builder_h],
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link_with: [libpanfrost_util, libpanfrost_bifrost_disasm],
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c_args : [no_override_init_args],
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gnu_symbol_visibility : 'hidden',
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