re PR target/26255 (internal compiler error: in reload_cse_simplify_operands, at postreload.c:391)

	PR target/26255
	* gcc.c-torture/compile/pr26255.c: New test case.

From-SVN: r111213

gcc/testsuite/ChangeLog

+2006-02-16  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR target/26255
+	* gcc.c-torture/compile/pr26255.c: New test case.
+
 2006-02-16  Roger Sayle  <roger@eyesopen.com>
 
 	* gfortran.fortran-torture/execute/where_10.f90: New test case.

gcc/testsuite/gcc.c-torture/compile/pr26255.c

+typedef short int16_t;
+
+int round_sample(int *sum);
+
+#define MULS(ra, rb) ((ra) * (rb))
+
+#define SUM8(sum, op, w, p) \
+{ \
+  sum op MULS((w)[0 * 64], p[0 * 64]); \
+  sum op MULS((w)[1 * 64], p[1 * 64]); \
+  sum op MULS((w)[2 * 64], p[2 * 64]); \
+  sum op MULS((w)[3 * 64], p[3 * 64]); \
+  sum op MULS((w)[4 * 64], p[4 * 64]); \
+  sum op MULS((w)[5 * 64], p[5 * 64]); \
+  sum op MULS((w)[6 * 64], p[6 * 64]); \
+  sum op MULS((w)[7 * 64], p[7 * 64]); \
+}
+
+void foo(int *dither_state, int *samples)
+{
+  int16_t *synth_buf;
+  const int16_t *w, *p;
+  int sum;
+
+  sum = *dither_state;
+  p = synth_buf + 16;
+  SUM8(sum, +=, w, p);
+  p = synth_buf + 48;
+  SUM8(sum, -=, w + 32, p);
+  *samples = round_sample(&sum);
+}