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8668550427
Currently we may just load LLVM module and convert all functions into IR (print it). For better LLVM support IR framework needs support for modules. Some LLVM features are not supported yet (see TODOs in ir_load_llvm.c) .
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/*
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* IR - Lightweight JIT Compilation Framework
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* (Examples package)
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* Copyright (C) 2023 by IR project.
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* Authors: Anatol Belski <anbelski@linux.microsoft.com>
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*/
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#include "ir.h"
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#include "ir_builder.h"
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#include <stdlib.h>
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/*
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* int32_t myfunc() {
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* int32_t i = 0;
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* while (i++ < 42);
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* return i;
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* }
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*/
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typedef int32_t (*myfunc_t)(void);
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void gen_myfunc(ir_ctx *ctx)
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{
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/* Function entry start */
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ir_START();
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/* Declare loop counter. */
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ir_ref i = ir_COPY_I32(ir_CONST_I32(0));
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ir_ref loop = ir_LOOP_BEGIN(ir_END());
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ir_ref phi_i_1 = ir_PHI_2(IR_I32, i, IR_UNUSED);
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ir_ref i_2 = ir_ADD_I32(phi_i_1, ir_CONST_I32(1));
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ir_ref cond = ir_IF(ir_LT(phi_i_1, ir_CONST_I32(42)));
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ir_IF_TRUE(cond);
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/* close loop */
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ir_MERGE_SET_OP(loop, 2, ir_LOOP_END());
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ir_PHI_SET_OP(phi_i_1, 2, i_2);
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ir_IF_FALSE(cond);
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/* Function end */
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ir_RETURN(i_2);
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}
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int main(int argc, char **argv)
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{
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ir_ctx ctx = {0};
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ir_consistency_check();
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ir_init(&ctx, IR_FUNCTION | IR_OPT_FOLDING, IR_CONSTS_LIMIT_MIN, IR_INSNS_LIMIT_MIN);
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gen_myfunc(&ctx);
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size_t size;
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void *entry = ir_jit_compile(&ctx, 2, &size);
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if (entry) {
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printf("%d\n", ((myfunc_t)entry)());
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}
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ir_free(&ctx);
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return 0;
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}
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