patches/gcc/3.4.6/160-arm-ldm-peephole2.patch
author Bernhard Walle <bernhard@bwalle.de>
Sun May 11 13:00:36 2014 +0200 (2014-05-11)
changeset 3318 579bc9107f99
parent 746 b150d6f590fc
permissions -rw-r--r--
complibs/ppl: Fix build of ppl 0.11.2 with gcc 4.9

From: Roberto Bagnara <bagnara@cs.unipr.it>
Date: Tue, 29 Apr 2014 19:51:43 +0000 (+0200)
Subject: Added missing inclusions. Use std::ptrdiff_t.
X-Git-Url: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl%2Fppl.git;a=commitdiff;h=61d4e14dfd9f1121e9b4521dead5728b2424dd7c

Added missing inclusions. Use std::ptrdiff_t.
(Thanks to Paulo Cesar Pereira de Andrade.)

Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Message-Id: <5632a171e7c1dc4c0fb5.1399806148@euler.fritz.box>
Patchwork-Id: 347777
     1 diff -durN gcc-3.4.6.orig/gcc/config/arm/arm.c gcc-3.4.6/gcc/config/arm/arm.c
     2 --- gcc-3.4.6.orig/gcc/config/arm/arm.c	2007-08-15 22:57:51.000000000 +0200
     3 +++ gcc-3.4.6/gcc/config/arm/arm.c	2007-08-15 22:57:51.000000000 +0200
     4 @@ -4572,6 +4572,10 @@
     5  int
     6  adjacent_mem_locations (rtx a, rtx b)
     7  {
     8 +  /* We don't guarantee to preserve the order of these memory refs.  */
     9 +  if (volatile_refs_p (a) || volatile_refs_p (b))
    10 +    return 0;
    11 +
    12    if ((GET_CODE (XEXP (a, 0)) == REG
    13         || (GET_CODE (XEXP (a, 0)) == PLUS
    14  	   && GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT))
    15 @@ -4611,6 +4615,17 @@
    16  	return 0;
    17  
    18        val_diff = val1 - val0;
    19 +
    20 +      if (arm_ld_sched)
    21 +	{
    22 +	  /* If the target has load delay slots, then there's no benefit
    23 +	     to using an ldm instruction unless the offset is zero and
    24 +	     we are optimizing for size.  */
    25 +	  return (optimize_size && (REGNO (reg0) == REGNO (reg1))
    26 +		  && (val0 == 0 || val1 == 0 || val0 == 4 || val1 == 4)
    27 +		  && (val_diff == 4 || val_diff == -4));
    28 +	}
    29 +
    30        return ((REGNO (reg0) == REGNO (reg1))
    31  	      && (val_diff == 4 || val_diff == -4));
    32      }