65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/*
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* Copyright (C) 2022 Alyssa Rosenzweig <alyssa@rosenzweig.io>
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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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "agx_compiler.h"
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#include "agx_builder.h"
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/* Lower pseudo instructions created during optimization. */
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static void
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agx_lower_to_unary_bitop(agx_instr *I, enum agx_bitop_table table)
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{
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I->op = AGX_OPCODE_BITOP;
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I->truth_table = table;
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/* Allocate extra source */
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I->src = reralloc_array_size(I, I->src, sizeof(agx_index), I->nr_srcs++);
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I->src[1] = agx_zero();
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}
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static void
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agx_lower_to_binary_bitop(agx_instr *I, enum agx_bitop_table table)
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{
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I->op = AGX_OPCODE_BITOP;
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I->truth_table = table;
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}
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void
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agx_lower_pseudo(agx_context *ctx)
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{
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agx_foreach_instr_global(ctx, I) {
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switch (I->op) {
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/* Various instructions are implemented as bitwise truth tables */
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case AGX_OPCODE_MOV: agx_lower_to_unary_bitop(I, AGX_BITOP_MOV); break;
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case AGX_OPCODE_NOT: agx_lower_to_unary_bitop(I, AGX_BITOP_NOT); break;
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case AGX_OPCODE_AND: agx_lower_to_binary_bitop(I, AGX_BITOP_AND); break;
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case AGX_OPCODE_XOR: agx_lower_to_binary_bitop(I, AGX_BITOP_XOR); break;
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case AGX_OPCODE_OR: agx_lower_to_binary_bitop(I, AGX_BITOP_OR); break;
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default:
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break;
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}
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}
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}
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