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i386.c (ix86_loop_memcount): Delete.

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gcc/
	* config/i386/i386.c (ix86_loop_memcount): Delete.
	(ix86_loop_unroll_adjust): Use FOR_EACH_SUBRTX.

From-SVN: r216761
This commit is contained in:
Richard Sandiford 2014-10-27 18:43:14 +00:00 committed by Richard Sandiford
parent 8dc252595b
commit e4d1b49512
2 changed files with 22 additions and 30 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-10-27 Richard Sandiford <richard.sandiford@arm.com>
* config/i386/i386.c (ix86_loop_memcount): Delete.
(ix86_loop_unroll_adjust): Use FOR_EACH_SUBRTX.
2014-10-27 Richard Sandiford <richard.sandiford@arm.com>
* config/i386/i386.c (find_constant_1): Delete.

47
gcc/config/i386/i386.c
View File

@ -47412,29 +47412,6 @@ ix86_simd_clone_usable (struct cgraph_node *node)
}
}
/* This function gives out the number of memory references.
This value determines the unrolling factor for
bdver3 and bdver4 architectures. */
static int
ix86_loop_memcount (rtx *x, unsigned *mem_count)
{
if (*x != NULL_RTX && MEM_P (*x))
{
enum machine_mode mode;
unsigned int n_words;
mode = GET_MODE (*x);
n_words = GET_MODE_SIZE (mode) / UNITS_PER_WORD;
if (n_words > 4)
(*mem_count)+=2;
else
(*mem_count)+=1;
}
return 0;
}
/* This function adjusts the unroll factor based on
the hardware capabilities. For ex, bdver3 has
a loop buffer which makes unrolling of smaller
@ -47453,15 +47430,25 @@ ix86_loop_unroll_adjust (unsigned nunroll, struct loop *loop)
if (!TARGET_ADJUST_UNROLL)
return nunroll;
/* Count the number of memory references within the loop body. */
/* Count the number of memory references within the loop body.
This value determines the unrolling factor for bdver3 and bdver4
architectures. */
subrtx_iterator::array_type array;
bbs = get_loop_body (loop);
for (i = 0; i < loop->num_nodes; i++)
{
for (insn = BB_HEAD (bbs[i]); insn != BB_END (bbs[i]); insn = NEXT_INSN (insn))
if (NONDEBUG_INSN_P (insn))
for_each_rtx_in_insn (&insn, (rtx_function) ix86_loop_memcount,
&mem_count);
}
FOR_BB_INSNS (bbs[i], insn)
if (NONDEBUG_INSN_P (insn))
FOR_EACH_SUBRTX (iter, array, insn, NONCONST)
if (const_rtx x = *iter)
if (MEM_P (x))
{
enum machine_mode mode = GET_MODE (x);
unsigned int n_words = GET_MODE_SIZE (mode) / UNITS_PER_WORD;
if (n_words > 4)
mem_count += 2;
else
mem_count += 1;
}
free (bbs);
if (mem_count && mem_count <=32)