[PATCH] gimplifying leaves reference to the BLOCK's body

[Andrew Haley]

Andrew Pinski writes:

 > The problem here is that we keep a hold of the body of a BLOCK even
 > though we don't need it after gimplifying.  This patch NULLs out
 > BLOCK_EXPR_BODY, the old BLOCK's BLOCK_EXPR_BODY which causes us to
 > be able to GC away the expressions and not keep around dead
 > expressions.  This also gives us one more step to back to enabling
 > unit-at-a-time at -O1 and above.

OK, thanks.

Andrew.