Continue searching in find_oldest_value_reg on class match failure.

From-SVN: r168001

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 944f806..37890e6 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-12-17  Richard Henderson  <rth@redhat.com>
+
+       * regcprop.c (find_oldest_value_reg): Continue search instead of
+       failing if an element in the copy chain is of the wrong regclass.
+
 2010-12-17  Paolo Bonzini  <bonzini@gnu.org>
 
        PR c/20385

diff --git a/gcc/regcprop.c b/gcc/regcprop.c
index 88f9226..0f0dfb3 100644 (file)
--- a/gcc/regcprop.c
+++ b/gcc/regcprop.c
@@ -457,7 +457,7 @@ find_oldest_value_reg (enum reg_class cl, rtx reg, struct value_data *vd)
       rtx new_rtx;
 
       if (!in_hard_reg_set_p (reg_class_contents[cl], mode, i))
-       return NULL_RTX;
+       continue;
 
       new_rtx = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i, regno);
       if (new_rtx)