/usr/src/gcc-4.4/debian/patches/pr39429.diff is in gcc-4.4-source 4.4.7-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | # DP: Proposed patch for PR target/39429, an ARM wrong-code error.
2009-07-20 Mikael Pettersson <mikpe@it.uu.se>
gcc/
Backport from mainline:
2009-04-20 Ian Lance Taylor <ian@gcc.gnu.org>
Fix enum conversions which are invalid in C++.
PR target/39429
* config/arm/arm.c (adjacent_mem_locations): Fix swapped
parameters in const_ok_for_op calls.
gcc/testsuite/
PR target/39429
* gcc.target/arm/pr39429.c: New test case.
--- a/src/gcc/config/arm/arm.c 2009-06-02 09:18:16.000000000 +0200
+++ b/src/gcc/config/arm/arm.c 2009-07-18 20:14:45.000000000 +0200
@@ -7401,7 +7401,7 @@ adjacent_mem_locations (rtx a, rtx b)
/* Don't accept any offset that will require multiple
instructions to handle, since this would cause the
arith_adjacentmem pattern to output an overlong sequence. */
- if (!const_ok_for_op (PLUS, val0) || !const_ok_for_op (PLUS, val1))
+ if (!const_ok_for_op (val0, PLUS) || !const_ok_for_op (val1, PLUS))
return 0;
/* Don't allow an eliminable register: register elimination can make
--- a/src/gcc/testsuite/gcc.target/arm/pr39429.c 1970-01-01 01:00:00.000000000 +0100
+++ b/src/gcc/testsuite/gcc.target/arm/pr39429.c 2009-07-14 01:21:46.000000000 +0200
@@ -0,0 +1,28 @@
+/* PR target/39429 */
+/* { dg-do run } */
+/* { dg-options "-O2 -mtune=arm740t" } */
+
+struct obj {
+ unsigned int _filler[270];
+ unsigned int mapsize;
+ unsigned int size;
+};
+
+int __attribute__((noinline)) useOffScreen(struct obj *obj)
+{
+ unsigned int size = obj->size;
+ unsigned int mapsize = obj->mapsize;
+
+ return (mapsize - size) < 16*1024 ? 0 : 1;
+}
+
+int main(void)
+{
+ struct obj obj;
+
+ obj.mapsize = 0;
+ obj.size = 0;
+ if (useOffScreen(&obj) != 0)
+ __builtin_abort();
+ return 0;
+}
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