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58 lines
1.1 KiB
C
58 lines
1.1 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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* void myfunc(uint32_t *i) {
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* (*i)++;
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* }
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*/
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typedef uint32_t (*myfunc_t)(uint32_t*);
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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 function parameters */
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ir_ref i_ptr = ir_PARAM(IR_U32, "i", 1);
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/* Dereference the argument pointer value, increment and store back. */
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ir_ref i_val = ir_LOAD_U32(i_ptr);
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ir_ref i_inc_val = ir_ADD_U32(i_val, ir_CONST_U32(1));
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ir_STORE(i_ptr, i_inc_val);
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/* Function end, declared void */
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ir_RETURN(IR_UNUSED);
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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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uint32_t i = 42;
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printf("i=%u ", i);
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((myfunc_t)entry)(&i);
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printf("i=%u\n", i);
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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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