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Commit 9b859a88 authored by sigurds's avatar sigurds Committed by Commit bot
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[turbofan] Add TRACE macro for escape analysis 

R=jarin@chromium.org
BUG=v8:4586
LOG=n

Review URL: https://codereview.chromium.org/1608073003

Cr-Commit-Position: refs/heads/master@{#33468}
parent 867fc715
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Inline Side-by-side
Showing with 152 additions and 203 deletions
src/compiler/escape-analysis-reducer.cc
View file @ 9b859a88
......@@ -11,6 +11,15 @@ namespace v8 {
namespace internal {
namespace compiler {
#ifdef DEBUG
#define TRACE(...) \
do { \
if (FLAG_trace_turbo_escape) PrintF(__VA_ARGS__); \
} while (false)
#else
#define TRACE(...)
#endif // DEBUG
EscapeAnalysisReducer::EscapeAnalysisReducer(Editor* editor, JSGraph* jsgraph,
EscapeAnalysis* escape_analysis,
Zone* zone)
......@@ -89,10 +98,8 @@ Reduction EscapeAnalysisReducer::ReduceLoad(Node* node) {
if (Node* rep = escape_analysis()->GetReplacement(node)) {
visited_.Add(node->id());
counters()->turbo_escape_loads_replaced()->Increment();
if (FLAG_trace_turbo_escape) {
PrintF("Replaced #%d (%s) with #%d (%s)\n", node->id(),
node->op()->mnemonic(), rep->id(), rep->op()->mnemonic());
}
TRACE("Replaced #%d (%s) with #%d (%s)\n", node->id(),
node->op()->mnemonic(), rep->id(), rep->op()->mnemonic());
ReplaceWithValue(node, rep);
return Changed(rep);
}
......@@ -106,10 +113,8 @@ Reduction EscapeAnalysisReducer::ReduceStore(Node* node) {
if (visited_.Contains(node->id())) return NoChange();
visited_.Add(node->id());
if (escape_analysis()->IsVirtual(NodeProperties::GetValueInput(node, 0))) {
if (FLAG_trace_turbo_escape) {
PrintF("Removed #%d (%s) from effect chain\n", node->id(),
node->op()->mnemonic());
}
TRACE("Removed #%d (%s) from effect chain\n", node->id(),
node->op()->mnemonic());
RelaxEffectsAndControls(node);
return Changed(node);
}
......@@ -124,9 +129,7 @@ Reduction EscapeAnalysisReducer::ReduceAllocate(Node* node) {
if (escape_analysis()->IsVirtual(node)) {
RelaxEffectsAndControls(node);
counters()->turbo_escape_allocs_replaced()->Increment();
if (FLAG_trace_turbo_escape) {
PrintF("Removed allocate #%d from effect chain\n", node->id());
}
TRACE("Removed allocate #%d from effect chain\n", node->id());
return Changed(node);
}
return NoChange();
......@@ -139,6 +142,7 @@ Reduction EscapeAnalysisReducer::ReduceFinishRegion(Node* node) {
if (effect->opcode() == IrOpcode::kBeginRegion) {
RelaxEffectsAndControls(effect);
RelaxEffectsAndControls(node);
#ifdef DEBUG
if (FLAG_trace_turbo_escape) {
PrintF("Removed region #%d / #%d from effect chain,", effect->id(),
node->id());
......@@ -148,6 +152,7 @@ Reduction EscapeAnalysisReducer::ReduceFinishRegion(Node* node) {
}
PrintF("\n");
}
#endif // DEBUG
return Changed(node);
}
return NoChange();
......@@ -162,22 +167,16 @@ Reduction EscapeAnalysisReducer::ReduceReferenceEqual(Node* node) {
if (escape_analysis()->IsVirtual(right) &&
escape_analysis()->CompareVirtualObjects(left, right)) {
ReplaceWithValue(node, jsgraph()->TrueConstant());
if (FLAG_trace_turbo_escape) {
PrintF("Replaced ref eq #%d with true\n", node->id());
}
TRACE("Replaced ref eq #%d with true\n", node->id());
}
// Right-hand side is not a virtual object, or a different one.
ReplaceWithValue(node, jsgraph()->FalseConstant());
if (FLAG_trace_turbo_escape) {
PrintF("Replaced ref eq #%d with false\n", node->id());
}
TRACE("Replaced ref eq #%d with false\n", node->id());
return Replace(node);
} else if (escape_analysis()->IsVirtual(right)) {
// Left-hand side is not a virtual object.
ReplaceWithValue(node, jsgraph()->FalseConstant());
if (FLAG_trace_turbo_escape) {
PrintF("Replaced ref eq #%d with false\n", node->id());
}
TRACE("Replaced ref eq #%d with false\n", node->id());
}
return NoChange();
}
......@@ -188,9 +187,7 @@ Reduction EscapeAnalysisReducer::ReduceObjectIsSmi(Node* node) {
Node* input = NodeProperties::GetValueInput(node, 0);
if (escape_analysis()->IsVirtual(input)) {
ReplaceWithValue(node, jsgraph()->FalseConstant());
if (FLAG_trace_turbo_escape) {
PrintF("Replaced ObjectIsSmi #%d with false\n", node->id());
}
TRACE("Replaced ObjectIsSmi #%d with false\n", node->id());
return Replace(node);
}
return NoChange();
......@@ -227,9 +224,7 @@ Node* EscapeAnalysisReducer::ReduceDeoptState(Node* node, Node* effect,
visited_.Contains(node->id())) {
return nullptr;
}
if (FLAG_trace_turbo_escape) {
PrintF("Reducing %s %d\n", node->op()->mnemonic(), node->id());
}
TRACE("Reducing %s %d\n", node->op()->mnemonic(), node->id());
Node* clone = nullptr;
bool node_multiused = node->UseCount() > 1;
bool multiple_users_rec = multiple_users || node_multiused;
......@@ -238,13 +233,9 @@ Node* EscapeAnalysisReducer::ReduceDeoptState(Node* node, Node* effect,
if (input->opcode() == IrOpcode::kStateValues) {
if (Node* ret = ReduceDeoptState(input, effect, multiple_users_rec)) {
if (node_multiused || (multiple_users && !clone)) {
if (FLAG_trace_turbo_escape) {
PrintF(" Cloning #%d", node->id());
}
TRACE(" Cloning #%d", node->id());
node = clone = jsgraph()->graph()->CloneNode(node);
if (FLAG_trace_turbo_escape) {
PrintF(" to #%d\n", node->id());
}
TRACE(" to #%d\n", node->id());
node_multiused = false;
}
NodeProperties::ReplaceValueInput(node, ret, i);
......@@ -264,13 +255,9 @@ Node* EscapeAnalysisReducer::ReduceDeoptState(Node* node, Node* effect,
if (Node* ret =
ReduceDeoptState(outer_frame_state, effect, multiple_users_rec)) {
if (node_multiused || (multiple_users && !clone)) {
if (FLAG_trace_turbo_escape) {
PrintF(" Cloning #%d", node->id());
}
TRACE(" Cloning #%d", node->id());
node = clone = jsgraph()->graph()->CloneNode(node);
if (FLAG_trace_turbo_escape) {
PrintF(" to #%d\n", node->id());
}
TRACE(" to #%d\n", node->id());
}
NodeProperties::ReplaceFrameStateInput(node, 0, ret);
}
......@@ -287,10 +274,8 @@ Node* EscapeAnalysisReducer::ReduceStateValueInput(Node* node, int node_index,
bool already_cloned,
bool multiple_users) {
Node* input = NodeProperties::GetValueInput(node, node_index);
if (FLAG_trace_turbo_escape) {
PrintF("Reducing State Input #%d (%s)\n", input->id(),
input->op()->mnemonic());
}
TRACE("Reducing State Input #%d (%s)\n", input->id(),
input->op()->mnemonic());
Node* clone = nullptr;
if (input->opcode() == IrOpcode::kFinishRegion ||
input->opcode() == IrOpcode::kAllocate) {
......@@ -298,25 +283,19 @@ Node* EscapeAnalysisReducer::ReduceStateValueInput(Node* node, int node_index,
if (Node* object_state =
escape_analysis()->GetOrCreateObjectState(effect, input)) {
if (node_multiused || (multiple_users && !already_cloned)) {
if (FLAG_trace_turbo_escape) {
PrintF("Cloning #%d", node->id());
}
TRACE("Cloning #%d", node->id());
node = clone = jsgraph()->graph()->CloneNode(node);
if (FLAG_trace_turbo_escape) {
PrintF(" to #%d\n", node->id());
}
TRACE(" to #%d\n", node->id());
node_multiused = false;
already_cloned = true;
}
NodeProperties::ReplaceValueInput(node, object_state, node_index);
if (FLAG_trace_turbo_escape) {
PrintF("Replaced state #%d input #%d with object state #%d\n",
node->id(), input->id(), object_state->id());
}
TRACE("Replaced state #%d input #%d with object state #%d\n",
node->id(), input->id(), object_state->id());
} else {
if (FLAG_trace_turbo_escape) {
PrintF("No object state replacement available.\n");
}
TRACE("No object state replacement for #%d at effect #%d available.\n",
input->id(), effect->id());
UNREACHABLE();
}
}
}
......
src/compiler/escape-analysis.cc
View file @ 9b859a88
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