56a486c322
- this avoids using relative include paths which are forbidden by the style guide - makes the code more readable since it's clear which header is meant - allows for starting to use checkdeps BUG=none R=jkummerow@chromium.org, danno@chromium.org LOG=n Review URL: https://codereview.chromium.org/304153016 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
// Copyright 2013 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "src/hydrogen-infer-types.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
void HInferTypesPhase::InferTypes(int from_inclusive, int to_inclusive) {
|
|
for (int i = from_inclusive; i <= to_inclusive; ++i) {
|
|
HBasicBlock* block = graph()->blocks()->at(i);
|
|
|
|
const ZoneList<HPhi*>* phis = block->phis();
|
|
for (int j = 0; j < phis->length(); j++) {
|
|
phis->at(j)->UpdateInferredType();
|
|
}
|
|
|
|
for (HInstructionIterator it(block); !it.Done(); it.Advance()) {
|
|
it.Current()->UpdateInferredType();
|
|
}
|
|
|
|
if (block->IsLoopHeader()) {
|
|
HBasicBlock* last_back_edge =
|
|
block->loop_information()->GetLastBackEdge();
|
|
InferTypes(i + 1, last_back_edge->block_id());
|
|
// Skip all blocks already processed by the recursive call.
|
|
i = last_back_edge->block_id();
|
|
// Update phis of the loop header now after the whole loop body is
|
|
// guaranteed to be processed.
|
|
for (int j = 0; j < block->phis()->length(); ++j) {
|
|
HPhi* phi = block->phis()->at(j);
|
|
worklist_.Add(phi, zone());
|
|
in_worklist_.Add(phi->id());
|
|
}
|
|
while (!worklist_.is_empty()) {
|
|
HValue* current = worklist_.RemoveLast();
|
|
in_worklist_.Remove(current->id());
|
|
if (current->UpdateInferredType()) {
|
|
for (HUseIterator it(current->uses()); !it.Done(); it.Advance()) {
|
|
HValue* use = it.value();
|
|
if (!in_worklist_.Contains(use->id())) {
|
|
in_worklist_.Add(use->id());
|
|
worklist_.Add(use, zone());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
ASSERT(in_worklist_.IsEmpty());
|
|
}
|
|
}
|
|
}
|
|
|
|
} } // namespace v8::internal
|