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Use word_mode instead of Pmode in loop expand 

2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (ix86_expand_movmem): Use word_mode for size
	needed for loop.
	(ix86_expand_setmem): Likewise.

From-SVN: r185200
This commit is contained in:
H.J. Lu 2012-03-11 18:46:03 +00:00 committed by H.J. Lu
parent 670bb1a1c6
commit 8100d8c1eb
2 changed files with 14 additions and 8 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-03-11 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/i386.c (ix86_expand_movmem): Use word_mode for size
needed for loop.
(ix86_expand_setmem): Likewise.
2012-03-11 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_zero_extend_to_Pmode): Rewrite using

16
gcc/config/i386/i386.c
View File

@ -22055,11 +22055,11 @@ ix86_expand_movmem (rtx dst, rtx src, rtx count_exp, rtx align_exp,
gcc_unreachable ();
case loop:
need_zero_guard = true;
size_needed = GET_MODE_SIZE (Pmode);
size_needed = GET_MODE_SIZE (word_mode);
break;
case unrolled_loop:
need_zero_guard = true;
size_needed = GET_MODE_SIZE (Pmode) * (TARGET_64BIT ? 4 : 2);
size_needed = GET_MODE_SIZE (word_mode) * (TARGET_64BIT ? 4 : 2);
break;
case rep_prefix_8_byte:
size_needed = 8;
@ -22225,13 +22225,13 @@ ix86_expand_movmem (rtx dst, rtx src, rtx count_exp, rtx align_exp,
break;
case loop:
expand_set_or_movmem_via_loop (dst, src, destreg, srcreg, NULL,
count_exp, Pmode, 1, expected_size);
count_exp, word_mode, 1, expected_size);
break;
case unrolled_loop:
/* Unroll only by factor of 2 in 32bit mode, since we don't have enough
registers for 4 temporaries anyway. */
expand_set_or_movmem_via_loop (dst, src, destreg, srcreg, NULL,
count_exp, Pmode, TARGET_64BIT ? 4 : 2,
count_exp, word_mode, TARGET_64BIT ? 4 : 2,
expected_size);
break;
case rep_prefix_8_byte:
@ -22443,11 +22443,11 @@ ix86_expand_setmem (rtx dst, rtx count_exp, rtx val_exp, rtx align_exp,
gcc_unreachable ();
case loop:
need_zero_guard = true;
size_needed = GET_MODE_SIZE (Pmode);
size_needed = GET_MODE_SIZE (word_mode);
break;
case unrolled_loop:
need_zero_guard = true;
size_needed = GET_MODE_SIZE (Pmode) * 4;
size_needed = GET_MODE_SIZE (word_mode) * 4;
break;
case rep_prefix_8_byte:
size_needed = 8;
@ -22618,11 +22618,11 @@ ix86_expand_setmem (rtx dst, rtx count_exp, rtx val_exp, rtx align_exp,
break;
case loop:
expand_set_or_movmem_via_loop (dst, NULL, destreg, NULL, promoted_val,
count_exp, Pmode, 1, expected_size);
count_exp, word_mode, 1, expected_size);
break;
case unrolled_loop:
expand_set_or_movmem_via_loop (dst, NULL, destreg, NULL, promoted_val,
count_exp, Pmode, 4, expected_size);
count_exp, word_mode, 4, expected_size);
break;
case rep_prefix_8_byte:
expand_setmem_via_rep_stos (dst, destreg, promoted_val, count_exp,