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88 lines
3.6 KiB
88 lines
3.6 KiB
/******************************************************************************
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* Copyright (C) 2015 Dibyendu Majumdar
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************************/
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#include <ravi_gccjit.h>
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void ravi_emit_iFORLOOP(ravi_function_def_t *def, int A, int pc,
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ravi_branch_def_t *b, int step_one) {
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// lua_Integer step = ivalue(ra + 2);
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// lua_Integer idx = ivalue(ra) + step; /* increment index */
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// lua_Integer limit = ivalue(ra + 1);
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// if (idx <= limit) {
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// ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
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// setivalue(ra, idx); /* update internal index... */
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// setivalue(ra + 3, idx); /* ...and external index */
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// }
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// We are in b->jmp as this is already the current block
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lua_assert(def->current_block == b->jmp);
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// Create the done block
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gcc_jit_block *exit_block = gcc_jit_function_new_block(
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def->jit_function, unique_name(def, "FORLOOP_I1_exit", 0));
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gcc_jit_rvalue *new_idx;
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if (!step_one) {
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// lua_Integer step = ivalue(ra + 2);
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new_idx = gcc_jit_context_new_binary_op(
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def->function_context, NULL, GCC_JIT_BINARY_OP_PLUS,
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def->ravi->types->lua_IntegerT, gcc_jit_lvalue_as_rvalue(b->iidx),
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gcc_jit_lvalue_as_rvalue(b->istep));
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} else
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new_idx = gcc_jit_context_new_binary_op(
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def->function_context, NULL, GCC_JIT_BINARY_OP_PLUS,
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def->ravi->types->lua_IntegerT, gcc_jit_lvalue_as_rvalue(b->iidx),
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gcc_jit_context_new_rvalue_from_int(def->function_context,
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def->ravi->types->lua_IntegerT, 1));
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// save new index
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gcc_jit_block_add_assignment(def->current_block, NULL, b->iidx, new_idx);
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// lua_Integer limit = ivalue(ra + 1);
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// idx > limit?
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gcc_jit_rvalue *new_idx_gt_limit = ravi_emit_comparison(
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def, GCC_JIT_COMPARISON_GT, gcc_jit_lvalue_as_rvalue(b->iidx),
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gcc_jit_lvalue_as_rvalue(b->ilimit));
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// If idx > limit we are done
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gcc_jit_block *update_block = gcc_jit_function_new_block(
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def->jit_function, unique_name(def, "FORLOOP_I1_updatei", 0));
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ravi_emit_conditional_branch(def, new_idx_gt_limit, exit_block, update_block);
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ravi_set_current_block(def, update_block);
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// Load pointer to base
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ravi_emit_load_base(def);
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// setivalue(ra + 3, idx); /* ...and external index */
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gcc_jit_lvalue *rvar = ravi_emit_get_register(def, A + 3);
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ravi_emit_store_reg_i_withtype(def, gcc_jit_lvalue_as_rvalue(b->iidx), rvar);
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// ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
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ravi_emit_branch(def, def->jmp_targets[pc]->jmp);
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ravi_set_current_block(def, exit_block);
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}
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