Avoid generating some unused LLVM IRs (#1696)
Refine the generated LLVM IRs at the beginning of each LLVM AOT/JIT function to fasten the LLVM IR optimization: - Only create argv_buf if there are func calls in this function - Only create native stack bound if stack bound check is enabled - Only create aux stack info if there is opcode set_global_aux_stack - Only create native symbol if indirect_mode is enabled - Only create memory info if there are memory operations - Only create func_type_indexes if there is opcode call_indirect
This commit is contained in:
Wenyong Huang
@ -219,6 +219,234 @@ fail:
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return NULL;
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}
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static bool
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create_argv_buf(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMValueRef argv_buf_offset = I32_THREE, argv_buf_addr;
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LLVMTypeRef int32_ptr_type;
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/* Get argv buffer address */
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if (!(argv_buf_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&argv_buf_offset, 1, "argv_buf_addr"))) {
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aot_set_last_error("llvm build in bounds gep failed");
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return false;
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}
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if (!(int32_ptr_type = LLVMPointerType(INT32_PTR_TYPE, 0))) {
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aot_set_last_error("llvm add pointer type failed");
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return false;
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}
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/* Convert to int32 pointer type */
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if (!(argv_buf_addr = LLVMBuildBitCast(comp_ctx->builder, argv_buf_addr,
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int32_ptr_type, "argv_buf_ptr"))) {
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aot_set_last_error("llvm build load failed");
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return false;
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}
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if (!(func_ctx->argv_buf = LLVMBuildLoad2(comp_ctx->builder, INT32_PTR_TYPE,
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argv_buf_addr, "argv_buf"))) {
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aot_set_last_error("llvm build load failed");
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return false;
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}
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return true;
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}
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static bool
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create_native_stack_bound(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMValueRef stack_bound_offset = I32_FOUR, stack_bound_addr;
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if (!(stack_bound_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&stack_bound_offset, 1, "stack_bound_addr"))) {
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aot_set_last_error("llvm build in bounds gep failed");
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return false;
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}
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if (!(func_ctx->native_stack_bound =
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LLVMBuildLoad2(comp_ctx->builder, OPQ_PTR_TYPE, stack_bound_addr,
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"native_stack_bound"))) {
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aot_set_last_error("llvm build load failed");
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return false;
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}
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return true;
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}
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static bool
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create_aux_stack_info(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMValueRef aux_stack_bound_offset = I32_SIX, aux_stack_bound_addr;
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LLVMValueRef aux_stack_bottom_offset = I32_SEVEN, aux_stack_bottom_addr;
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/* Get aux stack boundary address */
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if (!(aux_stack_bound_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&aux_stack_bound_offset, 1, "aux_stack_bound_addr"))) {
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aot_set_last_error("llvm build in bounds gep failed");
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return false;
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}
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if (!(aux_stack_bound_addr =
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LLVMBuildBitCast(comp_ctx->builder, aux_stack_bound_addr,
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INT32_PTR_TYPE, "aux_stack_bound_ptr"))) {
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aot_set_last_error("llvm build bit cast failed");
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return false;
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}
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if (!(func_ctx->aux_stack_bound =
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LLVMBuildLoad2(comp_ctx->builder, I32_TYPE, aux_stack_bound_addr,
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"aux_stack_bound"))) {
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aot_set_last_error("llvm build load failed");
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return false;
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}
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/* Get aux stack bottom address */
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if (!(aux_stack_bottom_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&aux_stack_bottom_offset, 1, "aux_stack_bottom_addr"))) {
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aot_set_last_error("llvm build in bounds gep failed");
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return false;
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}
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if (!(aux_stack_bottom_addr =
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LLVMBuildBitCast(comp_ctx->builder, aux_stack_bottom_addr,
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INT32_PTR_TYPE, "aux_stack_bottom_ptr"))) {
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aot_set_last_error("llvm build bit cast failed");
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return false;
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}
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if (!(func_ctx->aux_stack_bottom =
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LLVMBuildLoad2(comp_ctx->builder, I32_TYPE, aux_stack_bottom_addr,
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"aux_stack_bottom"))) {
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aot_set_last_error("llvm build load failed");
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return false;
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}
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return true;
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}
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static bool
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create_native_symbol(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx)
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{
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LLVMValueRef native_symbol_offset = I32_EIGHT, native_symbol_addr;
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if (!(native_symbol_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&native_symbol_offset, 1, "native_symbol_addr"))) {
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aot_set_last_error("llvm build in bounds gep failed");
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return false;
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}
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if (!(func_ctx->native_symbol =
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LLVMBuildLoad2(comp_ctx->builder, OPQ_PTR_TYPE,
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native_symbol_addr, "native_symbol_tmp"))) {
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aot_set_last_error("llvm build bit cast failed");
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return false;
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}
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if (!(func_ctx->native_symbol =
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LLVMBuildBitCast(comp_ctx->builder, func_ctx->native_symbol,
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comp_ctx->exec_env_type, "native_symbol"))) {
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aot_set_last_error("llvm build bit cast failed");
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return false;
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}
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return true;
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}
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static bool
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create_local_variables(AOTCompData *comp_data, AOTCompContext *comp_ctx,
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AOTFuncContext *func_ctx, AOTFunc *func)
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{
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AOTFuncType *aot_func_type = comp_data->func_types[func->func_type_index];
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char local_name[32];
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uint32 i, j = 1;
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for (i = 0; i < aot_func_type->param_count; i++, j++) {
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snprintf(local_name, sizeof(local_name), "l%d", i);
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func_ctx->locals[i] =
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LLVMBuildAlloca(comp_ctx->builder,
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TO_LLVM_TYPE(aot_func_type->types[i]), local_name);
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if (!func_ctx->locals[i]) {
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aot_set_last_error("llvm build alloca failed.");
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return false;
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}
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if (!LLVMBuildStore(comp_ctx->builder, LLVMGetParam(func_ctx->func, j),
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func_ctx->locals[i])) {
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aot_set_last_error("llvm build store failed.");
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return false;
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}
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}
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for (i = 0; i < func->local_count; i++) {
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LLVMTypeRef local_type;
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LLVMValueRef local_value = NULL;
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snprintf(local_name, sizeof(local_name), "l%d",
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aot_func_type->param_count + i);
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local_type = TO_LLVM_TYPE(func->local_types[i]);
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func_ctx->locals[aot_func_type->param_count + i] =
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LLVMBuildAlloca(comp_ctx->builder, local_type, local_name);
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if (!func_ctx->locals[aot_func_type->param_count + i]) {
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aot_set_last_error("llvm build alloca failed.");
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return false;
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}
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switch (func->local_types[i]) {
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case VALUE_TYPE_I32:
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local_value = I32_ZERO;
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break;
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case VALUE_TYPE_I64:
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local_value = I64_ZERO;
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break;
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case VALUE_TYPE_F32:
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local_value = F32_ZERO;
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break;
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case VALUE_TYPE_F64:
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local_value = F64_ZERO;
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break;
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case VALUE_TYPE_V128:
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local_value = V128_i64x2_ZERO;
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break;
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case VALUE_TYPE_FUNCREF:
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case VALUE_TYPE_EXTERNREF:
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local_value = REF_NULL;
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break;
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default:
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bh_assert(0);
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break;
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}
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if (!LLVMBuildStore(comp_ctx->builder, local_value,
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func_ctx->locals[aot_func_type->param_count + i])) {
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aot_set_last_error("llvm build store failed.");
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return false;
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}
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}
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if (comp_ctx->enable_stack_bound_check) {
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if (aot_func_type->param_count + func->local_count > 0) {
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func_ctx->last_alloca = func_ctx->locals[aot_func_type->param_count
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+ func->local_count - 1];
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if (!(func_ctx->last_alloca =
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LLVMBuildBitCast(comp_ctx->builder, func_ctx->last_alloca,
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INT8_PTR_TYPE, "stack_ptr"))) {
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aot_set_last_error("llvm build bit cast failed.");
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return false;
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}
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}
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else {
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if (!(func_ctx->last_alloca = LLVMBuildAlloca(
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comp_ctx->builder, INT8_TYPE, "stack_ptr"))) {
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aot_set_last_error("llvm build alloca failed.");
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return false;
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}
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}
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}
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return true;
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}
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static bool
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create_memory_info(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
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LLVMTypeRef int8_ptr_type, uint32 func_index)
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@ -653,17 +881,12 @@ aot_create_func_context(AOTCompData *comp_data, AOTCompContext *comp_ctx,
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{
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AOTFuncContext *func_ctx;
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AOTFuncType *aot_func_type = comp_data->func_types[func->func_type_index];
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WASMModule *module = comp_ctx->comp_data->wasm_module;
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WASMFunction *wasm_func = module->functions[func_index];
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AOTBlock *aot_block;
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LLVMTypeRef int8_ptr_type, int32_ptr_type;
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LLVMTypeRef int8_ptr_type;
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LLVMValueRef aot_inst_offset = I32_TWO, aot_inst_addr;
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LLVMValueRef argv_buf_offset = I32_THREE, argv_buf_addr;
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LLVMValueRef stack_bound_offset = I32_FOUR, stack_bound_addr;
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LLVMValueRef aux_stack_bound_offset = I32_SIX, aux_stack_bound_addr;
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LLVMValueRef aux_stack_bottom_offset = I32_SEVEN, aux_stack_bottom_addr;
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LLVMValueRef native_symbol_offset = I32_EIGHT, native_symbol_addr;
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char local_name[32];
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uint64 size;
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uint32 i, j = 0;
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/* Allocate memory for the function context */
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size = offsetof(AOTFuncContext, locals)
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@ -682,13 +905,15 @@ aot_create_func_context(AOTCompData *comp_data, AOTCompContext *comp_ctx,
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/* Add LLVM function */
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if (!(func_ctx->func =
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aot_add_llvm_func(comp_ctx, func_ctx->module, aot_func_type,
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func_index, &func_ctx->func_type)))
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func_index, &func_ctx->func_type))) {
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goto fail;
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}
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/* Create function's first AOTBlock */
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if (!(aot_block =
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aot_create_func_block(comp_ctx, func_ctx, func, aot_func_type)))
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aot_create_func_block(comp_ctx, func_ctx, func, aot_func_type))) {
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goto fail;
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}
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#if WASM_ENABLE_DEBUG_AOT != 0
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func_ctx->debug_func = dwarf_gen_func_info(comp_ctx, func_ctx);
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@ -700,7 +925,7 @@ aot_create_func_context(AOTCompData *comp_data, AOTCompContext *comp_ctx,
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LLVMPositionBuilderAtEnd(comp_ctx->builder, aot_block->llvm_entry_block);
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/* Save the pameters for fast access */
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func_ctx->exec_env = LLVMGetParam(func_ctx->func, j++);
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func_ctx->exec_env = LLVMGetParam(func_ctx->func, 0);
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/* Get aot inst address, the layout of exec_env is:
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exec_env->next, exec_env->prev, exec_env->module_inst, and argv_buf */
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@ -719,208 +944,59 @@ aot_create_func_context(AOTCompData *comp_data, AOTCompContext *comp_ctx,
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}
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/* Get argv buffer address */
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if (!(argv_buf_addr = LLVMBuildInBoundsGEP2(
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comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
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&argv_buf_offset, 1, "argv_buf_addr"))) {
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||||
aot_set_last_error("llvm build in bounds gep failed");
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||||
goto fail;
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||||
}
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if (!(int32_ptr_type = LLVMPointerType(INT32_PTR_TYPE, 0))) {
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aot_set_last_error("llvm add pointer type failed");
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||||
goto fail;
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||||
}
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||||
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||||
/* Convert to int32 pointer type */
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||||
if (!(argv_buf_addr = LLVMBuildBitCast(comp_ctx->builder, argv_buf_addr,
|
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int32_ptr_type, "argv_buf_ptr"))) {
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||||
aot_set_last_error("llvm build load failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(func_ctx->argv_buf = LLVMBuildLoad2(comp_ctx->builder, INT32_PTR_TYPE,
|
||||
argv_buf_addr, "argv_buf"))) {
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||||
aot_set_last_error("llvm build load failed");
|
||||
if (wasm_func->has_op_func_call && !create_argv_buf(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Get native stack boundary address */
|
||||
if (!(stack_bound_addr = LLVMBuildInBoundsGEP2(
|
||||
comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
|
||||
&stack_bound_offset, 1, "stack_bound_addr"))) {
|
||||
aot_set_last_error("llvm build in bounds gep failed");
|
||||
if (comp_ctx->enable_stack_bound_check
|
||||
&& !create_native_stack_bound(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(func_ctx->native_stack_bound =
|
||||
LLVMBuildLoad2(comp_ctx->builder, OPQ_PTR_TYPE, stack_bound_addr,
|
||||
"native_stack_bound"))) {
|
||||
aot_set_last_error("llvm build load failed");
|
||||
/* Get auxiliary stack info */
|
||||
if (wasm_func->has_op_set_global_aux_stack
|
||||
&& !create_aux_stack_info(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Get aux stack boundary address */
|
||||
if (!(aux_stack_bound_addr = LLVMBuildInBoundsGEP2(
|
||||
comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
|
||||
&aux_stack_bound_offset, 1, "aux_stack_bound_addr"))) {
|
||||
aot_set_last_error("llvm build in bounds gep failed");
|
||||
/* Get native symbol list */
|
||||
if (comp_ctx->is_indirect_mode
|
||||
&& !create_native_symbol(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(aux_stack_bound_addr =
|
||||
LLVMBuildBitCast(comp_ctx->builder, aux_stack_bound_addr,
|
||||
INT32_PTR_TYPE, "aux_stack_bound_ptr"))) {
|
||||
aot_set_last_error("llvm build bit cast failed");
|
||||
/* Create local variables */
|
||||
if (!create_local_variables(comp_data, comp_ctx, func_ctx, func)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(func_ctx->aux_stack_bound =
|
||||
LLVMBuildLoad2(comp_ctx->builder, I32_TYPE, aux_stack_bound_addr,
|
||||
"aux_stack_bound"))) {
|
||||
aot_set_last_error("llvm build load failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Get aux stack bottom address */
|
||||
if (!(aux_stack_bottom_addr = LLVMBuildInBoundsGEP2(
|
||||
comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
|
||||
&aux_stack_bottom_offset, 1, "aux_stack_bottom_addr"))) {
|
||||
aot_set_last_error("llvm build in bounds gep failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(aux_stack_bottom_addr =
|
||||
LLVMBuildBitCast(comp_ctx->builder, aux_stack_bottom_addr,
|
||||
INT32_PTR_TYPE, "aux_stack_bottom_ptr"))) {
|
||||
aot_set_last_error("llvm build bit cast failed");
|
||||
goto fail;
|
||||
}
|
||||
if (!(func_ctx->aux_stack_bottom =
|
||||
LLVMBuildLoad2(comp_ctx->builder, I32_TYPE, aux_stack_bottom_addr,
|
||||
"aux_stack_bottom"))) {
|
||||
aot_set_last_error("llvm build load failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(native_symbol_addr = LLVMBuildInBoundsGEP2(
|
||||
comp_ctx->builder, OPQ_PTR_TYPE, func_ctx->exec_env,
|
||||
&native_symbol_offset, 1, "native_symbol_addr"))) {
|
||||
aot_set_last_error("llvm build in bounds gep failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(func_ctx->native_symbol =
|
||||
LLVMBuildLoad2(comp_ctx->builder, OPQ_PTR_TYPE,
|
||||
native_symbol_addr, "native_symbol_tmp"))) {
|
||||
aot_set_last_error("llvm build bit cast failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (!(func_ctx->native_symbol =
|
||||
LLVMBuildBitCast(comp_ctx->builder, func_ctx->native_symbol,
|
||||
comp_ctx->exec_env_type, "native_symbol"))) {
|
||||
aot_set_last_error("llvm build bit cast failed");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
for (i = 0; i < aot_func_type->param_count; i++, j++) {
|
||||
snprintf(local_name, sizeof(local_name), "l%d", i);
|
||||
func_ctx->locals[i] =
|
||||
LLVMBuildAlloca(comp_ctx->builder,
|
||||
TO_LLVM_TYPE(aot_func_type->types[i]), local_name);
|
||||
if (!func_ctx->locals[i]) {
|
||||
aot_set_last_error("llvm build alloca failed.");
|
||||
goto fail;
|
||||
}
|
||||
if (!LLVMBuildStore(comp_ctx->builder, LLVMGetParam(func_ctx->func, j),
|
||||
func_ctx->locals[i])) {
|
||||
aot_set_last_error("llvm build store failed.");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < func->local_count; i++) {
|
||||
LLVMTypeRef local_type;
|
||||
LLVMValueRef local_value = NULL;
|
||||
snprintf(local_name, sizeof(local_name), "l%d",
|
||||
aot_func_type->param_count + i);
|
||||
local_type = TO_LLVM_TYPE(func->local_types[i]);
|
||||
func_ctx->locals[aot_func_type->param_count + i] =
|
||||
LLVMBuildAlloca(comp_ctx->builder, local_type, local_name);
|
||||
if (!func_ctx->locals[aot_func_type->param_count + i]) {
|
||||
aot_set_last_error("llvm build alloca failed.");
|
||||
goto fail;
|
||||
}
|
||||
switch (func->local_types[i]) {
|
||||
case VALUE_TYPE_I32:
|
||||
local_value = I32_ZERO;
|
||||
break;
|
||||
case VALUE_TYPE_I64:
|
||||
local_value = I64_ZERO;
|
||||
break;
|
||||
case VALUE_TYPE_F32:
|
||||
local_value = F32_ZERO;
|
||||
break;
|
||||
case VALUE_TYPE_F64:
|
||||
local_value = F64_ZERO;
|
||||
break;
|
||||
case VALUE_TYPE_V128:
|
||||
local_value = V128_i64x2_ZERO;
|
||||
break;
|
||||
case VALUE_TYPE_FUNCREF:
|
||||
case VALUE_TYPE_EXTERNREF:
|
||||
local_value = REF_NULL;
|
||||
break;
|
||||
default:
|
||||
bh_assert(0);
|
||||
break;
|
||||
}
|
||||
if (!LLVMBuildStore(comp_ctx->builder, local_value,
|
||||
func_ctx->locals[aot_func_type->param_count + i])) {
|
||||
aot_set_last_error("llvm build store failed.");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
if (aot_func_type->param_count + func->local_count > 0) {
|
||||
func_ctx->last_alloca =
|
||||
func_ctx
|
||||
->locals[aot_func_type->param_count + func->local_count - 1];
|
||||
if (!(func_ctx->last_alloca =
|
||||
LLVMBuildBitCast(comp_ctx->builder, func_ctx->last_alloca,
|
||||
INT8_PTR_TYPE, "stack_ptr"))) {
|
||||
aot_set_last_error("llvm build bit cast failed.");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
else {
|
||||
if (!(func_ctx->last_alloca =
|
||||
LLVMBuildAlloca(comp_ctx->builder, INT8_TYPE, "stack_ptr"))) {
|
||||
aot_set_last_error("llvm build alloca failed.");
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
|
||||
if (!(int8_ptr_type = LLVMPointerType(INT8_PTR_TYPE, 0))) {
|
||||
aot_set_last_error("llvm add pointer type failed.");
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Create base addr, end addr, data size of mem, heap */
|
||||
if (!create_memory_info(comp_ctx, func_ctx, int8_ptr_type, func_index))
|
||||
if (wasm_func->has_memory_operations
|
||||
&& !create_memory_info(comp_ctx, func_ctx, int8_ptr_type, func_index)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Load current exception */
|
||||
if (!create_cur_exception(comp_ctx, func_ctx))
|
||||
if (!create_cur_exception(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Load function type indexes */
|
||||
if (!create_func_type_indexes(comp_ctx, func_ctx))
|
||||
if (wasm_func->has_op_call_indirect
|
||||
&& !create_func_type_indexes(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
/* Load function pointers */
|
||||
if (!create_func_ptrs(comp_ctx, func_ctx))
|
||||
if (!create_func_ptrs(comp_ctx, func_ctx)) {
|
||||
goto fail;
|
||||
}
|
||||
|
||||
return func_ctx;
|
||||
|
||||
|
||||
Reference in New Issue
Block a user