Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(396)

Unified Diff: src/hydrogen.cc

Issue 103933002: Use constant types to represent the fixed right arg of a MOD. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « src/hydrogen.h ('k') | src/ic.h » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 900e07ecdf9fa68a32540fc76be401d0b064a343..534f6126b67ba9a415d7c8afc583dee25a114a46 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -8732,11 +8732,9 @@ HValue* HOptimizedGraphBuilder::BuildBinaryOperation(
Handle<Type> left_type = expr->left()->bounds().lower;
Handle<Type> right_type = expr->right()->bounds().lower;
Handle<Type> result_type = expr->bounds().lower;
- Maybe<int> fixed_right_arg = expr->fixed_right_arg();
HValue* result = HGraphBuilder::BuildBinaryOperation(
- expr->op(), left, right, left_type, right_type,
- result_type, fixed_right_arg);
+ expr->op(), left, right, left_type, right_type, result_type);
// Add a simulate after instructions with observable side effects, and
// after phis, which are the result of BuildBinaryOperation when we
// inlined some complex subgraph.
@@ -8755,34 +8753,45 @@ HValue* HGraphBuilder::BuildBinaryOperation(
HValue* right,
Handle<Type> left_type,
Handle<Type> right_type,
- Handle<Type> result_type,
- Maybe<int> fixed_right_arg) {
+ Handle<Type> result_type) {
Representation left_rep = Representation::FromType(left_type);
Representation right_rep = Representation::FromType(right_type);
- bool maybe_string_add = op == Token::ADD &&
- (left_type->Maybe(Type::String()) ||
- right_type->Maybe(Type::String()));
-
if (left_type->Is(Type::None())) {
Add<HDeoptimize>("Insufficient type feedback for LHS of binary operation",
Deoptimizer::SOFT);
// TODO(rossberg): we should be able to get rid of non-continuous
// defaults.
left_type = handle(Type::Any(), isolate());
- } else {
- if (!maybe_string_add) left = TruncateToNumber(left, &left_type);
- left_rep = Representation::FromType(left_type);
+ } else if (left_type->IsConstant()) {
+ HConstant* c_left = Add<HConstant>(left_type->AsConstant());
+ IfBuilder if_same(this);
+ if (c_left->HasDoubleValue()) {
+ if_same.If<HCompareNumericAndBranch>(left, c_left, Token::EQ);
+ } else {
+ if_same.If<HCompareObjectEqAndBranch>(left, c_left);
+ }
+ if_same.Then();
+ if_same.ElseDeopt("Unexpected LHS of binary operation");
+ left = c_left;
}
if (right_type->Is(Type::None())) {
Add<HDeoptimize>("Insufficient type feedback for RHS of binary operation",
Deoptimizer::SOFT);
right_type = handle(Type::Any(), isolate());
- } else {
- if (!maybe_string_add) right = TruncateToNumber(right, &right_type);
- right_rep = Representation::FromType(right_type);
+ } else if (right_type->IsConstant()) {
+ HConstant* c_right = Add<HConstant>(right_type->AsConstant());
+ IfBuilder if_same(this);
+ if (c_right->HasDoubleValue()) {
+ if_same.If<HCompareNumericAndBranch>(right, c_right, Token::EQ);
+ } else {
+ if_same.If<HCompareObjectEqAndBranch>(right, c_right);
+ }
+ if_same.Then();
+ if_same.ElseDeopt("Unexpected RHS of binary operation");
+ right = c_right;
}
// Special case for string addition here.
@@ -8825,6 +8834,11 @@ HValue* HGraphBuilder::BuildBinaryOperation(
return AddUncasted<HStringAdd>(left, right, STRING_ADD_CHECK_NONE);
}
+ left = TruncateToNumber(left, &left_type);
+ left_rep = Representation::FromType(left_type);
+ right = TruncateToNumber(right, &right_type);
+ right_rep = Representation::FromType(right_type);
+
if (graph()->info()->IsStub()) {
left = EnforceNumberType(left, left_type);
right = EnforceNumberType(right, right_type);
@@ -8856,22 +8870,6 @@ HValue* HGraphBuilder::BuildBinaryOperation(
instr = AddUncasted<HMul>(left, right);
break;
case Token::MOD: {
- if (fixed_right_arg.has_value) {
- if (right->IsConstant()) {
- HConstant* c_right = HConstant::cast(right);
- if (c_right->HasInteger32Value()) {
- ASSERT_EQ(fixed_right_arg.value, c_right->Integer32Value());
- }
- } else {
- HConstant* fixed_right = Add<HConstant>(
- static_cast<int>(fixed_right_arg.value));
- IfBuilder if_same(this);
- if_same.If<HCompareNumericAndBranch>(right, fixed_right, Token::EQ);
- if_same.Then();
- if_same.ElseDeopt("Unexpected RHS of binary operation");
- right = fixed_right;
- }
- }
instr = AddUncasted<HMod>(left, right);
break;
}
« no previous file with comments | « src/hydrogen.h ('k') | src/ic.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698