Re: [PATCH] Don't optimize away non-pure/const calls during ccp (PR tree-optimization/51683)

[Nathan Froyd]

----- Original Message -----
> else if (is_gimple_call (def_stmt))
> {
> + int flags = gimple_call_flags (def_stmt);
> +
> + /* Don't optimize away calls that have side-effects. */
> + if ((flags & (ECF_CONST|ECF_PURE)) == 0
> + || (flags & ECF_LOOPING_CONST_OR_PURE))

This patch does this computation twice; grepping through the tree for ECF_CONST 
suggests it's done quite a few more times.  Could we get a predicate in 
gimple.h to encapsulate this?

-Nathan