Revert r2238. In 64-bit mode the length is in bits 0:63.
Not sure what I was thinking then....


git-svn-id: svn://svn.valgrind.org/vex/trunk@2240 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/guest_s390_toIR.c b/priv/guest_s390_toIR.c
index 32118e3..e7b64b4 100644
--- a/priv/guest_s390_toIR.c
+++ b/priv/guest_s390_toIR.c
@@ -10858,7 +10858,7 @@
    assign(src_addr, get_gpr_dw0(r2));
    assign(des_addr, get_gpr_dw0(r1));
    assign(tab_addr, get_gpr_dw0(1));
-   assign(src_len, unop(Iop_32Uto64, get_gpr_w1(r1+1)));
+   assign(src_len, get_gpr_dw0(r1+1));
    assign(test_byte, get_gpr_b7(0));
 
    IRTemp op = newTemp(Ity_I8);