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[NDS32] Refine ADJUST_INSN_LENGTH implementation. 

gcc/
	* config/nds32/nds32.c (nds32_adjust_insn_length): Refine.
	* config/nds32/nds32.h (ADJUST_INSN_LENGTH): Change the location in
	file.

From-SVN: r259187
This commit is contained in:
Chung-Ju Wu 2018-04-06 18:36:28 +00:00 committed by Chung-Ju Wu
parent f467067339
commit a58762287e
3 changed files with 38 additions and 35 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-04-06 Chung-Ju Wu <jasonwucj@gmail.com>
* config/nds32/nds32.c (nds32_adjust_insn_length): Refine.
* config/nds32/nds32.h (ADJUST_INSN_LENGTH): Change the location in
file.
2018-04-06 Chung-Ju Wu <jasonwucj@gmail.com>
Kito Cheng <kito.cheng@gmail.com>

60
gcc/config/nds32/nds32.c
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@ -1328,6 +1328,35 @@ nds32_register_passes (void)
/* PART 3: Implement target hook stuff definitions. */
/* Computing the Length of an Insn.
Modifies the length assigned to instruction INSN.
LEN is the initially computed length of the insn. */
int
nds32_adjust_insn_length (rtx_insn *insn, int length)
{
int adjust_value = 0;
switch (recog_memoized (insn))
{
case CODE_FOR_call_internal:
case CODE_FOR_call_value_internal:
{
/* We need insert a nop after a noretun function call
to prevent software breakpoint corrupt the next function. */
if (find_reg_note (insn, REG_NORETURN, NULL_RTX))
{
if (TARGET_16_BIT)
adjust_value += 2;
else
adjust_value += 4;
}
}
return length + adjust_value;
default:
return length;
}
}
/* Register Usage. */
static void
@ -4364,37 +4393,6 @@ nds32_ls_333_p (rtx rt, rtx ra, rtx imm, machine_mode mode)
return false;
}
/* Computing the Length of an Insn.
Modifies the length assigned to instruction INSN.
LEN is the initially computed length of the insn. */
int
nds32_adjust_insn_length (rtx_insn *insn, int length)
{
rtx src, dst;
switch (recog_memoized (insn))
{
case CODE_FOR_move_df:
case CODE_FOR_move_di:
/* Adjust length of movd44 to 2. */
src = XEXP (PATTERN (insn), 1);
dst = XEXP (PATTERN (insn), 0);
if (REG_P (src)
&& REG_P (dst)
&& (REGNO (src) % 2) == 0
&& (REGNO (dst) % 2) == 0)
length = 2;
break;
default:
break;
}
return length;
}
bool
nds32_split_double_word_load_store_p(rtx *operands, bool load_p)
{

7
gcc/config/nds32/nds32.h
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@ -24,6 +24,9 @@
/* The following are auxiliary macros or structure declarations
that are used all over the nds32.c and nds32.h. */
#define ADJUST_INSN_LENGTH(INSN, LENGTH) \
(LENGTH = nds32_adjust_insn_length (INSN, LENGTH))
/* Use SYMBOL_FLAG_MACH_DEP to define our own symbol_ref flag.
It is used in nds32_encode_section_info() to store flag in symbol_ref
in case the symbol should be placed in .rodata section.
@ -41,10 +44,6 @@ enum nds32_expand_result_type
EXPAND_CREATE_TEMPLATE
};
/* Computing the Length of an Insn. */
#define ADJUST_INSN_LENGTH(INSN, LENGTH) \
(LENGTH = nds32_adjust_insn_length (INSN, LENGTH))
/* Check instruction LS-37-FP-implied form.
Note: actually its immediate range is imm9u
since it is used for lwi37/swi37 instructions. */