Fix typos in comments: s/wether/whether/ and related corrections.

[libfirm] / ir / be / ia32 / ia32_architecture.h

diff --git a/ir/be/ia32/ia32_architecture.h b/ir/be/ia32/ia32_architecture.h
index 4712afc..84c0938 100644 (file)
--- a/ir/be/ia32/ia32_architecture.h
+++ b/ir/be/ia32/ia32_architecture.h
@@ -31,7 +31,7 @@ typedef struct {
        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;
@@ -51,23 +51,35 @@ typedef struct {
        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 pop's */
+       /** 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 push's */
+       /** use sub esp, 8 instead of 2 pushs */
        unsigned use_sub_esp_8:1;
-       /** use imul mem, imm32 instruction (slow on some cpu's */
+       /** 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;
        /**
@@ -76,22 +88,38 @@ typedef struct {
         * 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;
        /** 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 it's predecessor then align
+       /** 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);
 
-int ia32_evaluate_insn(insn_kind kind, tarval *tv);
+/**
+ * Evaluate the costs of an instruction. Used by the irach multiplication
+ * lowerer.
+ *
+ * @param kind   the instruction
+ * @param mode   the mode of the instruction
+ * @param tv     for MUL instruction, the multiplication constant
+ *
+ * @return the cost
+ */
+int ia32_evaluate_insn(insn_kind kind, const ir_mode *mode, ir_tarval *tv);
 
 #endif