pike.git/ src/ code/ amd64.c

2015-09-06

2015-09-06 10:32:49 by Per Hedbor <ph@opera.com>

• dca952574347d01943d9be36fba86db199452927 (23 lines) (+22/-1) ^{[ Show | Annotate ]}
  Branch: 8.1

Bypass the constant table, push value directly

3773:    ins_debug_instr_prologue(a-F_OFFSET, b, 0);    amd64_load_fp_reg();    amd64_load_sp_reg(); + #if 0    mov_mem_reg( fp_reg, OFFSETOF(pike_frame,context), P_REG_RCX );    mov_mem_reg( P_REG_RCX, OFFSETOF(inherit,prog), P_REG_RCX );    mov_mem_reg( P_REG_RCX, OFFSETOF(program,constants), P_REG_RCX );    add_reg_imm( P_REG_RCX, b*sizeof(struct program_constant) +    OFFSETOF(program_constant,sval) );    amd64_push_svaluep( P_REG_RCX ); -  +  /* ~14 instructions total */ + #else +  { +  struct svalue *cval = &Pike_compiler->new_program->constants[b].sval; +  mov_imm_mem(cval->tu.type_subtype, sp_reg, SVAL(0).type); +  if( TYPEOF(*cval) >= MIN_REF_TYPE ) +  { +  mov_imm_reg(cval->u.integer, P_REG_RCX); +  mov_reg_mem(P_REG_RCX, sp_reg, SVAL(0).value); +  add_imm_mem( 1, P_REG_RCX, OFFSETOF(pike_string, refs)); +  } +  else +  { +  mov_imm_mem(cval->u.integer, sp_reg, SVAL(0).value); +  } +  amd64_add_sp(1); +  } +  /* 2 or 4 instructions total */ + #endif    return;       case F_GLOBAL_LVALUE: