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sparc.c (sparc_do_work_around_errata): Speed up and use proper constant for the store mode.

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* config/sparc/sparc.c (sparc_do_work_around_errata): Speed up and use
	proper constant for the store mode.

From-SVN: r208638
This commit is contained in:
Eric Botcazou 2014-03-18 10:49:38 +00:00 committed by Eric Botcazou
parent 1fed15fc79
commit e33da4a113
2 changed files with 14 additions and 9 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2014-03-18 Eric Botcazou <ebotcazou@adacore.com>
* config/sparc/sparc.c (sparc_do_work_around_errata): Speed up and use
proper constant for the store mode.
2014-03-18 Ilya Enkovich <ilya.enkovich@intel.com>
* symtab.c (change_decl_assembler_name): Fix transparent alias

18
gcc/config/sparc/sparc.c
View File

@ -907,15 +907,15 @@ sparc_do_work_around_errata (void)
&& REGNO (SET_DEST (set)) % 2 != 0)
{
/* The wrong dependency is on the enclosing double register. */
unsigned int x = REGNO (SET_DEST (set)) - 1;
const unsigned int x = REGNO (SET_DEST (set)) - 1;
unsigned int src1, src2, dest;
int code;
/* If the insn has a delay slot, then it cannot be problematic. */
next = next_active_insn (insn);
if (!next)
break;
if (NONJUMP_INSN_P (next) && GET_CODE (PATTERN (next)) == SEQUENCE)
/* If the insn is a branch, then it cannot be problematic. */
if (!NONJUMP_INSN_P (next) || GET_CODE (PATTERN (next)) == SEQUENCE)
continue;
extract_insn (next);
@ -979,11 +979,11 @@ sparc_do_work_around_errata (void)
dependency on the first single-cycle load. */
rtx x = SET_DEST (set);
/* If the insn has a delay slot, then it cannot be problematic. */
next = next_active_insn (insn);
if (!next)
break;
if (NONJUMP_INSN_P (next) && GET_CODE (PATTERN (next)) == SEQUENCE)
/* If the insn is a branch, then it cannot be problematic. */
if (!NONJUMP_INSN_P (next) || GET_CODE (PATTERN (next)) == SEQUENCE)
continue;
/* Look for a second memory access to/from an integer register. */
@ -1001,13 +1001,13 @@ sparc_do_work_around_errata (void)
insert_nop = true;
/* STD is *not* affected. */
else if ((mem = mem_ref (dest)) != NULL_RTX
&& GET_MODE_SIZE (GET_MODE (mem)) <= 4
&& (src == const0_rtx
else if (MEM_P (dest)
&& GET_MODE_SIZE (GET_MODE (dest)) <= 4
&& (src == CONST0_RTX (GET_MODE (dest))
|| (REG_P (src)
&& REGNO (src) < 32
&& REGNO (src) != REGNO (x)))
&& !reg_mentioned_p (x, XEXP (mem, 0)))
&& !reg_mentioned_p (x, XEXP (dest, 0)))
insert_nop = true;
}
}