Mercurial > projects > ldc
view demos/qd1.d @ 1491:360a8e8eea51
Teach stack promotion to walk the CFG when a potential reuse of an allocation
is found to see if it can actually happen instead of just assuming it will.
This allows it to catch cases like
{{{
int i;
Foo f;
while (cond(i))
f = new Foo(i++);
return f.value;
}}}
where it previously wouldn't because a phi using the allocation would appear in
the condition block to propagate it to the use after the loop.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Thu, 11 Jun 2009 02:04:44 +0200 |
parents | 22a56b65872b |
children |
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module qd1; import qd; void main() { screen(640, 480); sleep(1); cls(Red); sleep(1); cls(Green); sleep(1); cls(Blue); sleep(1); // pset(10, 10); // line(0, 0, 100, 100, Box, Back(Red~Black)); // for (int i=0; i<=100; i+=10) { // line(i, 0, 100-i, 100); // line(0, i, 100, 100-i); // } // circle(100, 100, 50, 15, White~Black, Fill=White~Black); // paint(200, 200, Red, Back=White); // circle(100, 100, 50, 15, White); // paint(200, 200, Black); // pset(10, 11); pset(10, 11, Black); // pset(10, 10); // sleep(1); }