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From c0fc3696be538ba1c18669120828b46c71d65693 Mon Sep 17 00:00:00 2001
From: ramana <ramana@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 22 Jul 2010 08:30:36 +0000
Subject: [PATCH] Fix PR target/43698
2010-07-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/43698
* config/arm/arm.md: Split arm_rev into *arm_rev
and *thumb1_rev. Set *arm_rev to be predicable.
2010-07-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/43698
* gcc.target/arm/pr43698.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162404 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/config/arm/arm.md | 20 +++++++++++------
gcc/testsuite/gcc.target/arm/pr43698.c | 38 ++++++++++++++++++++++++++++++++
4 files changed, 62 insertions(+), 7 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/arm/pr43698.c
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -11305,15 +11305,21 @@
(set_attr "length" "4")]
)
-(define_insn "arm_rev"
+(define_insn "*arm_rev"
[(set (match_operand:SI 0 "s_register_operand" "=r")
(bswap:SI (match_operand:SI 1 "s_register_operand" "r")))]
- "TARGET_EITHER && arm_arch6"
- "rev\t%0, %1"
- [(set (attr "length")
- (if_then_else (eq_attr "is_thumb" "yes")
- (const_int 2)
- (const_int 4)))]
+ "TARGET_32BIT && arm_arch6"
+ "rev%?\t%0, %1"
+ [(set_attr "predicable" "yes")
+ (set_attr "length" "4")]
+)
+
+(define_insn "*thumb1_rev"
+ [(set (match_operand:SI 0 "s_register_operand" "=l")
+ (bswap:SI (match_operand:SI 1 "s_register_operand" "l")))]
+ "TARGET_THUMB1 && arm_arch6"
+ "rev\t%0, %1"
+ [(set_attr "length" "2")]
)
(define_expand "arm_legacy_rev"
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr43698.c
@@ -0,0 +1,38 @@
+/* { dg-do run } */
+/* { dg-options "-Os -march=armv7-a" } */
+#include <stdint.h>
+#include <stdlib.h>
+
+
+char do_reverse_endian = 0;
+
+# define bswap_32(x) \
+ ((((x) & 0xff000000) >> 24) | \
+ (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0x0000ff00) << 8) | \
+ (((x) & 0x000000ff) << 24))
+
+#define EGET(X) \
+ (__extension__ ({ \
+ uint64_t __res; \
+ if (!do_reverse_endian) { __res = (X); \
+ } else if (sizeof(X) == 4) { __res = bswap_32((X)); \
+ } \
+ __res; \
+ }))
+
+void __attribute__((noinline)) X(char **phdr, char **data, int *phoff)
+{
+ *phdr = *data + EGET(*phoff);
+}
+
+int main()
+{
+ char *phdr;
+ char *data = (char *)0x40164000;
+ int phoff = 0x34;
+ X(&phdr, &data, &phoff);
+ if (phdr != (char *)0x40164034)
+ abort ();
+ exit (0);
+}
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