pike.git/ src/ code/ amd64.c

2014-08-11

2014-08-11 14:26:25 by Per Hedbor <ph@opera.com>

• 8aee9f8fe03d329c0d82c18531af2f1e0da890c9 (21 lines) (+16/-5) ^{[ Show | Annotate ]}
  Branch: 8.0

Keep pike_fp->current_storage up to date in pike functions.

This speeds up global variable accesses quite a lot.

978:   {    /* Push all registers that the ABI requires to be preserved. */    push(P_REG_RBP); -  mov_reg_reg(P_REG_RSP, P_REG_RBP); +  /* mov_reg_reg(P_REG_RSP, P_REG_RBP); */    push(P_REG_R15);    push(P_REG_R14);    push(P_REG_R13);
986:    push(P_REG_RBX);    sub_reg_imm(P_REG_RSP, 8); /* Align on 16 bytes. */    mov_reg_reg(ARG1_REG, Pike_interpreter_reg); +  fp_reg = PIKE_FP_REG; +  mov_mem_reg(Pike_interpreter_reg,OFFSETOF(Pike_interpreter_struct,frame_pointer), fp_reg); +  +  mov_mem_reg(fp_reg, OFFSETOF(pike_frame, current_object), ARG1_REG); +  mov_mem_reg(ARG1_REG, OFFSETOF(object,storage), ARG1_REG ); +  /* arg1 = interpreter -> frame_pointer -> current_object -> storage */ +  mov_mem_reg( fp_reg, OFFSETOF(pike_frame, context), P_REG_RAX); +  add_reg_mem( ARG1_REG, P_REG_RAX, OFFSETOF(inherit,storage_offset) ); +  /* arg1 += pike_frame->context->storage_offset */ +  mov_reg_mem( ARG1_REG, fp_reg, OFFSETOF(pike_frame, current_storage)); +     amd64_flush_code_generator_state();   }      void amd64_flush_code_generator_state(void)   {    sp_reg = -1; -  fp_reg = -1; +  /* fp_reg = -1; */    ret_for_func = 0;    mark_sp_reg = -1;    dirty_regs = 0;
1120:   static void amd64_get_storage( enum amd64_reg reg, ptrdiff_t offset )   {    amd64_load_fp_reg(); - #if 0 -  /* Note: We really should keep pike_frame->current_storage up to date instead.. */ -  mov_mem_reg( fp_reg, OFFSETOF(pike_frame,current_storage), P_REG_RAX ); + #if 1 +  mov_mem_reg( fp_reg, OFFSETOF(pike_frame,current_storage), reg );    add_reg_imm( reg, offset );   #else    /* fp->current_object->storage */