#define FIRM_BE_IA32_ARCHITECTURE_H
typedef struct {
+ /** optimize for size */
+ unsigned optimize_size:1;
/** use leave in function epilogue */
unsigned use_leave:1;
- /** use inc, dec instead of add ,1 and add, -1 */
+ /** use inc, dec instead of add $1, reg and add $-1, reg */
unsigned use_incdec:1;
/** use sse2 instructions (instead of x87) */
unsigned use_sse2:1;
unsigned use_fucomi:1;
/** use cmovXX instructions */
unsigned use_cmov:1;
+ /** mode_D moves instead of 2 integer moves */
+ unsigned use_modeD_moves:1;
+ /** use add esp, 4 instead of pop */
+ unsigned use_add_esp_4:1;
+ /** use add esp, 8 instead of 2 pops */
+ unsigned use_add_esp_8:1;
+ /** use sub esp, 4 instead of push */
+ unsigned use_sub_esp_4:1;
+ /** use sub esp, 8 instead of 2 pushs */
+ unsigned use_sub_esp_8:1;
+ /** use imul mem, imm32 instruction (slow on some CPUs) */
+ unsigned use_imul_mem_imm32:1;
+ /** use pxor instead xorps/xorpd */
+ unsigned use_pxor:1;
+ /** use mov reg, 0 instruction */
+ unsigned use_mov_0:1;
+ /** use cwtl/cltd, which are shorter, to sign extend ax/eax */
+ unsigned use_short_sex_eax:1;
+ /** pad Ret instructions that are destination of conditional jump or directly preceded
+ by other jump instruction. */
+ unsigned use_pad_return:1;
+ /** use the bt instruction */
+ unsigned use_bt:1;
+ /** use fisttp instruction (requires SSE3) */
+ unsigned use_fisttp:1;
+ /** use SSE prefetch instructions */
+ unsigned use_sse_prefetch:1;
+ /** use 3DNow! prefetch instructions */
+ unsigned use_3dnow_prefetch:1;
+ /** use SSE4.2 or SSE4a popcnt instruction */
+ unsigned use_popcnt:1;
+ /** use i486 instructions */
+ unsigned use_i486:1;
/** optimize calling convention where possible */
unsigned optimize_cc:1;
/**
* rounding mode
*/
unsigned use_unsafe_floatconv:1;
+ /** emit machine code instead of assembler */
+ unsigned emit_machcode:1;
+
/** function alignment (a power of two in bytes) */
unsigned function_alignment;
/** alignment for labels (which are expected to be frequent jump targets) */
unsigned label_alignment;
- /** if a blocks execfreq is factor higher than it's predecessor then align
- * the blocks label (0 switches of label alignment) */
+ /** maximum skip alignment for labels (which are expected to be frequent jump targets) */
+ unsigned label_alignment_max_skip;
+ /** if a blocks execfreq is factor higher than its predecessor then align
+ * the blocks label (0 switches off label alignment) */
double label_alignment_factor;
} ia32_code_gen_config_t;
extern ia32_code_gen_config_t ia32_cg_config;
+/** Initialize the ia32 architecture module. */
void ia32_init_architecture(void);
+
+/** Setup the ia32_cg_config structure by inspecting current user settings. */
void ia32_setup_cg_config(void);
+/**
+ * Evaluate the costs of an instruction. Used by the irach multiplication
+ * lowerer.
+ *
+ * @param kind the instruction
+ * @param tv for MUL instruction, the multiplication constant
+ *
+ * @return the cost
+ */
int ia32_evaluate_insn(insn_kind kind, tarval *tv);
#endif