118 lines
3.6 KiB
Diff
118 lines
3.6 KiB
Diff
backport http://gcc.gnu.org/viewcvs?view=revision&revision=162404
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from trunk
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Which fixes http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43698
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2010-07-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
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PR target/43698
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* config/arm/arm.md: Split arm_rev into *arm_rev
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and *thumb1_rev. Set *arm_rev to be predicable.
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2010-07-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
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PR target/43698
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* gcc.target/arm/pr43698.c: New test.
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/scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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Usage: date [OPTION]... [+FORMAT]
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Display the current time in the given FORMAT.
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-d, --date=STRING display time described by STRING, not `now'
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-f, --file=DATEFILE like --date once for each line of DATEFILE
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-R, --rfc-822 output RFC-822 compliant date string
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-u, --utc, --universal print or set Coordinated Universal Time
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--help display this help and exit
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /bin/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /bin/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /bin/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /scratch/oe/sysroots/i686-linux/usr/share/quilt/compat/date
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date is /bin/date
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date
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Khem
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Index: gcc-4.5/gcc/config/arm/arm.md
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===================================================================
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--- gcc-4.5.orig/gcc/config/arm/arm.md 2010-07-20 20:31:25.000000000 -0700
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+++ gcc-4.5/gcc/config/arm/arm.md 2010-07-22 14:55:54.303169081 -0700
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@@ -11197,15 +11197,21 @@
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(set_attr "length" "4")]
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)
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-(define_insn "arm_rev"
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+(define_insn "*arm_rev"
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[(set (match_operand:SI 0 "s_register_operand" "=r")
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(bswap:SI (match_operand:SI 1 "s_register_operand" "r")))]
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- "TARGET_EITHER && arm_arch6"
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- "rev\t%0, %1"
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- [(set (attr "length")
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- (if_then_else (eq_attr "is_thumb" "yes")
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- (const_int 2)
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- (const_int 4)))]
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+ "TARGET_32BIT && arm_arch6"
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+ "rev%?\t%0, %1"
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+ [(set_attr "predicable" "yes")
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+ (set_attr "length" "4")]
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+)
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+
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+(define_insn "*thumb1_rev"
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+ [(set (match_operand:SI 0 "s_register_operand" "=l")
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+ (bswap:SI (match_operand:SI 1 "s_register_operand" "l")))]
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+ "TARGET_THUMB1 && arm_arch6"
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+ "rev\t%0, %1"
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+ [(set_attr "length" "2")]
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)
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(define_expand "arm_legacy_rev"
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Index: gcc-4.5/gcc/testsuite/gcc.target/arm/pr43698.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gcc-4.5/gcc/testsuite/gcc.target/arm/pr43698.c 2010-07-22 14:56:35.406670213 -0700
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@@ -0,0 +1,39 @@
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+/* { dg-do run } */
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+/* { dg-options "-Os -march=armv7-a" } */
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+#include <stdint.h>
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+#include <stdlib.h>
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+
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+
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+char do_reverse_endian = 0;
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+
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+# define bswap_32(x) \
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+ ((((x) & 0xff000000) >> 24) | \
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+ (((x) & 0x00ff0000) >> 8) | \
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+ (((x) & 0x0000ff00) << 8) | \
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+ (((x) & 0x000000ff) << 24))
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+
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+#define EGET(X) \
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+ (__extension__ ({ \
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+ uint64_t __res; \
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+ if (!do_reverse_endian) { __res = (X); \
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+ } else if (sizeof(X) == 4) { __res = bswap_32((X)); \
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+ } \
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+ __res; \
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+ }))
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+
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+void __attribute__((noinline)) X(char **phdr, char **data, int *phoff)
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+{
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+ *phdr = *data + EGET(*phoff);
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+}
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+
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+int main()
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+{
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+ char *phdr;
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+ char *data = (char *)0x40164000;
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+ int phoff = 0x34;
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+ X(&phdr, &data, &phoff);
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+ if (phdr != (char *)0x40164034)
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+ abort ();
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+ exit (0);
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+}
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+
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