[PATCH] PR c/14649: Constant folding builtins in initializers

Joseph S. Myers jsm@polyomino.org.uk
Mon Jun 7 17:45:00 GMT 2004

On Mon, 7 Jun 2004, Roger Sayle wrote:

> exist in the stack frame of the parser.  This would allow us to determine
> correctly whether an expression is constant by each of the ISO language
> standards, allows us to throw away NON_LVALUE_EXPR nodes, avoids the
> TREE_NO_WARNING hack added to fold_builtin, handles ternary operators
> where the condition and one branch is constant, etc...

... get rid of TREE_COMPLEXITY, fix bug 11250, etc. - see my proposal in
comment#15 to bug 14711 (and elsewhere).  (is_const would probably be more
like half a dozen flags rather than one, and you need to wrap type names
as well as expressions to get the constant expression rules correct; see
my discussion of constant expression issues

> Ok for mainline?  Would a backport be suitable for 3.4.1?

OK for mainline and 3.4 branch.

Joseph S. Myers

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