From 6904cd09658f4678e6529e951a64a005580568f1 Mon Sep 17 00:00:00 2001 From: Ting-Wei Lan Date: Thu, 21 Jan 2016 22:12:56 +0800 Subject: Don't call ccmmc_register_alloc() after saving registers for write function --- src/code-generation.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'src') diff --git a/src/code-generation.c b/src/code-generation.c index 725ee54..d49281c 100644 --- a/src/code-generation.c +++ b/src/code-generation.c @@ -359,13 +359,15 @@ static void store_variable(CcmmcAst *id, CcmmcState *state, CcmmcTmp *src, #undef REG_TMP static const char *call_write(CcmmcAst *id, CcmmcState *state, - uint64_t *current_offset) + size_t stored_param_count, uint64_t *current_offset) { CcmmcAst *arg = id->right_sibling->child; CcmmcTmp *dist; const char *dist_reg; if (arg->type_value == CCMMC_AST_VALUE_CONST_STRING) { + ccmmc_register_save_arguments(state->reg_pool, stored_param_count); + ccmmc_register_caller_save(state->reg_pool); size_t label_str = state->label_number++; fprintf(state->asm_output, "\t.section .rodata\n" @@ -381,6 +383,8 @@ static const char *call_write(CcmmcAst *id, CcmmcState *state, } else if (arg->type_value == CCMMC_AST_VALUE_INT) { dist = ccmmc_register_alloc(state->reg_pool, current_offset); generate_expression(arg, state, dist, current_offset); + ccmmc_register_save_arguments(state->reg_pool, stored_param_count); + ccmmc_register_caller_save(state->reg_pool); dist_reg = ccmmc_register_lock(state->reg_pool, dist); fprintf(state->asm_output, "\tmov\tw0, %s\n", @@ -391,6 +395,8 @@ static const char *call_write(CcmmcAst *id, CcmmcState *state, } else if (arg->type_value == CCMMC_AST_VALUE_FLOAT) { dist = ccmmc_register_alloc(state->reg_pool, current_offset); generate_expression(arg, state, dist, current_offset); + ccmmc_register_save_arguments(state->reg_pool, stored_param_count); + ccmmc_register_caller_save(state->reg_pool); dist_reg = ccmmc_register_lock(state->reg_pool, dist); fprintf(state->asm_output, "\tfmov\ts0, %s\n", @@ -417,9 +423,7 @@ static void call_function(CcmmcAst *id, CcmmcState *state, const char *func_name = id->value_id.name; if (strcmp(func_name, "write") == 0) { - ccmmc_register_save_arguments(state->reg_pool, stored_param_count); - ccmmc_register_caller_save(state->reg_pool); - func_name = call_write(id, state, current_offset); + func_name = call_write(id, state, stored_param_count, current_offset); } else if (strcmp(func_name, "read") == 0) { ccmmc_register_save_arguments(state->reg_pool, stored_param_count); ccmmc_register_caller_save(state->reg_pool); -- cgit v1.2.3