2012-01-20 Jakub Jelinek <jakub@redhat.com>
PR target/51915
* config/arm/arm.c (arm_count_output_move_double_insns): Call
output_move_double on a copy of operands array.
* gcc.target/arm/pr51915.c: New test.
--- gcc/config/arm/arm.c.jj 2012-01-20 12:35:15.000000000 +0100
+++ gcc/config/arm/arm.c 2012-01-20 13:51:06.781889121 +0100
@@ -24664,7 +24664,12 @@ int
arm_count_output_move_double_insns (rtx *operands)
{
int count;
- output_move_double (operands, false, &count);
+ rtx ops[2];
+ /* output_move_double may modify the operands array, so call it
+ here on a copy of the array. */
+ ops[0] = operands[0];
+ ops[1] = operands[1];
+ output_move_double (ops, false, &count);
return count;
}
--- gcc/testsuite/gcc.target/arm/pr51915.c.jj 2012-01-20 14:04:38.036245754 +0100
+++ gcc/testsuite/gcc.target/arm/pr51915.c 2012-01-20 14:04:21.000000000 +0100
@@ -0,0 +1,13 @@
+/* PR target/51915 */
+/* { dg-do compile } */
+/* { dg-options "-march=armv7-a -mfloat-abi=hard -O2" } */
+
+struct S { int s1; void *s2; };
+struct T { struct S t1; unsigned long long t2; };
+struct S *foo (unsigned long long);
+
+struct S *
+bar (struct S *x)
+{
+ return foo (((struct T *) x)->t2);
+}
Jakub