* src/hydrogen.cc (HInferRepresentation::Analyze): Fix iterative loop
over phis; the shortcutting behavior of || appears to be accidental
here, causing O(n^2) convergence. Not that it matters much, but hey!
While I'm at it, a minor comment fix:
* src/hydrogen-instructions.h (EnsureAndPropagateNotMinusZero): Fix a
comment about the kinds of instructions that propagate to multiple
inputs.
BUG=
TEST=passes tools/test.py
Review URL: http://codereview.chromium.org/
7350019
Patch from Andy Wingo <wingo@igalia.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8645
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
// it would otherwise output what should be a minus zero as an int32 zero.
// If the operation also exists in a form that takes int32 and outputs int32
// then the operation should return its input value so that we can propagate
- // back. There are two operations that need to propagate back to more than
- // one input. They are phi and binary add. They always return NULL and
- // expect the caller to take care of things.
+ // back. There are three operations that need to propagate back to more than
+ // one input. They are phi and binary div and mul. They always return NULL
+ // and expect the caller to take care of things.
virtual HValue* EnsureAndPropagateNotMinusZero(BitVector* visited) {
visited->Add(id());
return NULL;
HValue* use = it.value();
if (use->IsPhi()) {
int id = HPhi::cast(use)->phi_id();
- change = change ||
- connected_phis[i]->UnionIsChanged(*connected_phis[id]);
+ if (connected_phis[i]->UnionIsChanged(*connected_phis[id]))
+ change = true;
}
}
}