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Re: [tuples] gimple_assign_subcode for GIMPLE_SINGLE_RHS
On Mon, Mar 10, 2008 at 4:12 PM, Diego Novillo <email@example.com> wrote:
> On Sun, Mar 9, 2008 at 14:22, Zdenek Dvorak <firstname.lastname@example.org> wrote:
> > extract_ops_from_tree would return GIMPLE_COPY as subcode and
> > the whole expression as op1, where's the problem?
> Sorry, I misunderstood you. I thought you were advocating *against*
> > > I need to introduce GIMPLE_TERNARY_RHS (for ASSERT_EXPR) and
> > > GIMPLE_QUATERNARY_RHS (for COND_EXPR),
> > How are you going to represent the COND_EXPRs (i.e., where are you
> > going to put their comparison operator)?
> Well, until 10 seconds ago, I was going to represent 'a = (b > c) ? x : y' with
> GIMPLE_ASSIGN <GT_EXPR, b, c, x, y>
> *but* that could be confused with 'a = (b > c)', so I have to think
> more about it.
You could either do
GIMPLE_ASSIGN <COND_EXPR, cond, x, y>
or invent COND_GT_EXPR, COND_GE_EXPR, etc. (at least in GIMPLE
we always have a comparison in COND_EXPR_COND, never a plain