Hi Rao, Shivarama,
It seems your checkin caused SPEC/SPECfp2006/465.tonto Ofast compile
fail, please have a look. More detailed see bug882.
Thanks
zhuqing
2011/10/16 <s...@open64.net>:
> Author: shivaram
> Date: 2011-10-16 06:12:14 -0400 (Sun, 16 Oct 2011)
> New Revision: 3764
>
> Modified:
> trunk/osprey/be/opt/opt_dce.cxx
> Log:
> Fix for bug#787. Removal of identity assignment statements(i=i) is
> prevented if lhs is not propagatable.
> CR by Ye,Mei and Gautam
>
>
>
> Modified: trunk/osprey/be/opt/opt_dce.cxx
> ===================================================================
> --- trunk/osprey/be/opt/opt_dce.cxx 2011-10-14 08:12:52 UTC (rev 3763)
> +++ trunk/osprey/be/opt/opt_dce.cxx 2011-10-16 10:12:14 UTC (rev 3764)
> @@ -2149,7 +2149,8 @@
>
> if (OPERATOR_is_scalar_store (opr) &&
> Enable_identity_removal() &&
> - stmt->Is_identity_assignment_removable()) // if COPYPROP assumes the
> stmt is deleted
> + stmt->Is_identity_assignment_removable() &&
> + !(stmt->Lhs()->Flags() & CF_DONT_PROP)) // if COPYPROP assumes the
> stmt is deleted
> return FALSE;
>
> // statements with zero-version chi nodes are required
> @@ -3262,7 +3263,8 @@
>
> if (OPERATOR_is_scalar_store (opr) &&
> Enable_identity_removal() &&
> - stmt->Is_identity_assignment_removable()) {
> + stmt->Is_identity_assignment_removable() &&
> + !(stmt->Lhs()->Flags() & CF_DONT_PROP)) {
> // process the rhs expression, if any
> CODEREP *rhs = stmt->Rhs();
> if ( rhs != NULL ) {
>
>
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