* gimplify.c (gimplify_conversion): Remove stripping useless
conversions from here.
(gimplify_expr): Put it here, in place of call to STRIP_MAIN_TYPE_NOPS.
(gimplify_modify_expr_to_memcpy, gimplify_variable_sized_compare):
Unshare before substituting PLACEHOLDER_EXPR.
(gimplify_modify_expr_to_memset): Likewise.
Pass address of TO to memset, not TO itself.
(gimplify_init_constructor): Make copy of OBJECT so we have it each
time we make an expression (to match a PLACEHOLDER_EXPR).
From-SVN: r84056
