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patches/gcc/3.4.6/160-arm-ldm-peephole2.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Fri Oct 17 12:47:53 2008 +0000 (2008-10-17)
changeset 943 1cca90ce0481
parent 746 b150d6f590fc
permissions -rw-r--r--
Update the kconfig stuff to match the one in the linux-2.6.27 version.

/trunk/kconfig/zconf.hash.c | 225 110 115 0 +++----
/trunk/kconfig/lkc_proto.h | 4 3 1 0 +
/trunk/kconfig/mconf.c | 217 110 107 0 +++---
/trunk/kconfig/menu.c | 86 60 26 0 ++-
/trunk/kconfig/symbol.c | 212 156 56 0 ++++--
/trunk/kconfig/kconfig.mk | 24 9 15 0 -
/trunk/kconfig/lex.zconf.c | 97 80 17 0 ++-
/trunk/kconfig/util.c | 38 30 8 0 +
/trunk/kconfig/lkc.h | 22 18 4 0 +
/trunk/kconfig/expr.c | 32 19 13 0 +
/trunk/kconfig/confdata.c | 254 172 82 0 +++++---
/trunk/kconfig/lxdialog/dialog.h | 12 9 3 0 +
/trunk/kconfig/lxdialog/inputbox.c | 6 3 3 0
/trunk/kconfig/lxdialog/checklist.c | 4 2 2 0
/trunk/kconfig/lxdialog/menubox.c | 6 3 3 0
/trunk/kconfig/lxdialog/textbox.c | 2 1 1 0
/trunk/kconfig/lxdialog/util.c | 47 30 17 0 +
/trunk/kconfig/lxdialog/yesno.c | 4 2 2 0
/trunk/kconfig/expr.h | 20 10 10 0
/trunk/kconfig/zconf.tab.c | 1441 793 648 0 ++++++++++++++++++++++++-------------------
/trunk/kconfig/conf.c | 276 124 152 0 ++++----
/trunk/kconfig/check-gettext.sh | 14 14 0 0 +
/trunk/ct-ng.in | 2 1 1 0
23 files changed, 1759 insertions(+), 1286 deletions(-)
yann@339 
     1
 
diff -durN gcc-3.4.6.orig/gcc/config/arm/arm.c gcc-3.4.6/gcc/config/arm/arm.c
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--- gcc-3.4.6.orig/gcc/config/arm/arm.c	2007-08-15 22:57:51.000000000 +0200
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+++ gcc-3.4.6/gcc/config/arm/arm.c	2007-08-15 22:57:51.000000000 +0200
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@@ -4572,6 +4572,10 @@
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 int
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 adjacent_mem_locations (rtx a, rtx b)
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 {
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+  /* We don't guarantee to preserve the order of these memory refs.  */
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+  if (volatile_refs_p (a) || volatile_refs_p (b))
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+    return 0;
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+
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   if ((GET_CODE (XEXP (a, 0)) == REG
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        || (GET_CODE (XEXP (a, 0)) == PLUS
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 	   && GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT))
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@@ -4611,6 +4615,17 @@
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 	return 0;
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       val_diff = val1 - val0;
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+
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+      if (arm_ld_sched)
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+	{
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+	  /* If the target has load delay slots, then there's no benefit
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+	     to using an ldm instruction unless the offset is zero and
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+	     we are optimizing for size.  */
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+	  return (optimize_size && (REGNO (reg0) == REGNO (reg1))
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+		  && (val0 == 0 || val1 == 0 || val0 == 4 || val1 == 4)
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+		  && (val_diff == 4 || val_diff == -4));
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+	}
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+
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       return ((REGNO (reg0) == REGNO (reg1))
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 	      && (val_diff == 4 || val_diff == -4));
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     }
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