[PATCH 07/10] addr32: Use word_mode instead of Pmode in loop expand

[H.J. Lu]

Hi,

This patches uses word_mode instead of Pmode in loop expand since
word_mode may have bigger size than Pmode.  OK for trunk?

Thanks.

H.J.
---
2012-03-02  H.J. Lu  <hongjiu...@intel.com>

        * config/i386/i386.c (ix86_expand_movmem): Use word_mode instead
        of Pmode on loop.
        (ix86_expand_setmem): Likwise.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 47fa36a..67aaaea 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -22239,13 +22239,13 @@ 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:
@@ -22457,11 +22457,11 @@ 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;
@@ -22632,11 +22632,11 @@ 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,
-- 
1.7.6.5