[PATCH][TUPLES] Fix for a number of ICE's in g++ regression test.

["=?big5?b?RG91ZyBLd2FuICjD9q62vHcp?=" <dougkwan at google dot com>]

Hi Diego,

    Can you review this? That's all there is for this week :)

Thanks.

-Doug

2008-05-09  Doug Kwan  <dougkwan@google.com>

        * gimplify.c (gimple_pop_condition): Clear
        conditional_cleanups field after the associated gimple sequence has
        been freed implicitly.
        (gimplify_cleanup_point_expr): Clear conditional_cleanups field
        of gimplfiy_ctxp after resetting the conditions field.
        (gimplify_expr): Insert type conversion if the first operand of a
        POINTER_PLUS_EXPR has a type which is not trivially conviertible to
        type of the POINTER_PLUS_EXPR expression.
        * gimple.h (gimple_call_return_type): Handle REFERENCE_TYPE like
        POINTER_TYPE.

Attachment: patch.txt
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