pike.git/ src/ code/ amd64.c

2012-07-19

2012-07-19 00:20:57 by 0

• b016605d119edb5f7712db38b91cc1eab9e3063b (21 lines) (+13/-8) ^{[ Show | Annotate ]}
  Branch: 7.9

[compiler][amd64] Can't easily compare functions and floats in
F_BRANCH_WHEN_{EQ,NEQ}. Also corrected some comment typos.

2172:   /* START_JUMP();*/    ins_debug_instr_prologue(op, 0, 0);    amd64_load_sp_reg(); -  mov_mem16_reg( sp_reg, -sizeof(struct svalue), REG_RAX ); +  mov_mem16_reg( sp_reg, -sizeof(struct svalue), REG_RCX );    mov_mem16_reg( sp_reg, -sizeof(struct svalue)*2,REG_RBX ); -  cmp_reg_reg( REG_RAX, REG_RBX ); +  cmp_reg_reg( REG_RCX, REG_RBX );    jnz( &label_A ); /* Types differ */ -  cmp_reg32_imm( REG_RAX, PIKE_T_OBJECT ); -  je( &label_A ); /* Do not even bother with objects.. */ +     -  +  /* Fallback to C for functions, objects and floats. */ +  mov_imm_reg(1, REG_RBX); +  shl_reg32_reg(REG_RBX, REG_RCX); +  and_reg_imm(REG_RBX, (BIT_FUNCTION|BIT_OBJECT|BIT_FLOAT)); +  jnz( &label_A ); +     mov_mem_reg( sp_reg, -sizeof(struct svalue)+8, REG_RBX );    sub_reg_mem( REG_RBX, sp_reg, -sizeof(struct svalue)*2+8);    /* RBX will now be 0 if they are equal.*/       /* Optimization: The types are equal, pop_stack can be greatly -  * simplified if they are < max_reg_type */ -  cmp_reg32_imm( REG_RAX,MAX_REF_TYPE+1); +  * simplified if they are <= max_ref_type */ +  cmp_reg32_imm( REG_RCX,MAX_REF_TYPE+1);    jl( &label_B ); -  /* cheap pop. We know that both are >= max_ref_type */ +  /* cheap pop. We know that both are > max_ref_type */    amd64_add_sp( -2 );    jmp( &label_D );