"t" had got switched to "x" during the conversion. This showed up in
one of the alpha g++.dg tests.
Applied as obvious.
Richard
Index: gcc/simplify-rtx.c
===================================================================
--- gcc/simplify-rtx.c 2013-11-03 13:01:39.083385620 +0000
+++ gcc/simplify-rtx.c 2013-11-03 20:22:41.115469359 +0000
@@ -1819,7 +1819,8 @@ simplify_const_unary_operation (enum rtx
if (REAL_VALUES_LESS (t, x))
return immed_wide_int_const (wmax, mode);
- return immed_wide_int_const (real_to_integer (&t, &fail, width),
mode);
+ return immed_wide_int_const (real_to_integer (&x, &fail, width),
+ mode);
break;
default:
