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Unified Diff: src/ia32/lithium-codegen-ia32.cc

Issue 58923004: Make HTypeofIsAndBranch accept any representation input (Closed) Base URL: git://github.com/v8/v8.git@master
Patch Set: rebase Created 7 years, 1 month ago
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Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index de52fadda939f9e5c93be34d664355dab12ec445..c4beabdbb51817aaccf2d60d6b683add56ff380b 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -160,7 +160,7 @@ bool LCodeGen::GeneratePrologue() {
if (support_aligned_spilled_doubles_ && dynamic_frame_alignment_) {
// Move state of dynamic frame alignment into edx.
- __ mov(edx, Immediate(kNoAlignmentPadding));
+ __ Set(edx, Immediate(kNoAlignmentPadding));
Label do_not_pad, align_loop;
STATIC_ASSERT(kDoubleSize == 2 * kPointerSize);
@@ -316,7 +316,7 @@ void LCodeGen::GenerateOsrPrologue() {
osr_pc_offset_ = masm()->pc_offset();
// Move state of dynamic frame alignment into edx.
- __ mov(edx, Immediate(kNoAlignmentPadding));
+ __ Set(edx, Immediate(kNoAlignmentPadding));
if (support_aligned_spilled_doubles_ && dynamic_frame_alignment_) {
Label do_not_pad, align_loop;
@@ -6032,7 +6032,7 @@ void LCodeGen::DoDeferredAllocate(LAllocate* instr) {
// TODO(3095996): Get rid of this. For now, we need to make the
// result register contain a valid pointer because it is already
// contained in the register pointer map.
- __ mov(result, Immediate(Smi::FromInt(0)));
+ __ Set(result, Immediate(Smi::FromInt(0)));
PushSafepointRegistersScope scope(this);
if (instr->size()->IsRegister()) {
@@ -6151,43 +6151,48 @@ void LCodeGen::DoTypeof(LTypeof* instr) {
void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) {
Register input = ToRegister(instr->value());
-
- Condition final_branch_condition =
- EmitTypeofIs(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_),
- input, instr->type_literal());
+ Condition final_branch_condition = EmitTypeofIs(instr, input);
if (final_branch_condition != no_condition) {
EmitBranch(instr, final_branch_condition);
}
}
-Condition LCodeGen::EmitTypeofIs(Label* true_label,
- Label* false_label,
- Register input,
- Handle<String> type_name) {
+Condition LCodeGen::EmitTypeofIs(LTypeofIsAndBranch* instr, Register input) {
+ Label* true_label = instr->TrueLabel(chunk_);
+ Label* false_label = instr->FalseLabel(chunk_);
+ Handle<String> type_name = instr->type_literal();
+ int left_block = instr->TrueDestination(chunk_);
+ int right_block = instr->FalseDestination(chunk_);
+ int next_block = GetNextEmittedBlock();
+
+ Label::Distance true_distance = left_block == next_block ? Label::kNear
+ : Label::kFar;
+ Label::Distance false_distance = right_block == next_block ? Label::kNear
+ : Label::kFar;
Condition final_branch_condition = no_condition;
if (type_name->Equals(heap()->number_string())) {
- __ JumpIfSmi(input, true_label);
+ __ JumpIfSmi(input, true_label, true_distance);
__ cmp(FieldOperand(input, HeapObject::kMapOffset),
factory()->heap_number_map());
final_branch_condition = equal;
} else if (type_name->Equals(heap()->string_string())) {
- __ JumpIfSmi(input, false_label);
+ __ JumpIfSmi(input, false_label, false_distance);
__ CmpObjectType(input, FIRST_NONSTRING_TYPE, input);
- __ j(above_equal, false_label);
+ __ j(above_equal, false_label, false_distance);
__ test_b(FieldOperand(input, Map::kBitFieldOffset),
1 << Map::kIsUndetectable);
final_branch_condition = zero;
} else if (type_name->Equals(heap()->symbol_string())) {
- __ JumpIfSmi(input, false_label);
+ __ JumpIfSmi(input, false_label, false_distance);
__ CmpObjectType(input, SYMBOL_TYPE, input);
final_branch_condition = equal;
} else if (type_name->Equals(heap()->boolean_string())) {
__ cmp(input, factory()->true_value());
- __ j(equal, true_label);
+ __ j(equal, true_label, true_distance);
__ cmp(input, factory()->false_value());
final_branch_condition = equal;
@@ -6197,8 +6202,8 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
} else if (type_name->Equals(heap()->undefined_string())) {
__ cmp(input, factory()->undefined_value());
- __ j(equal, true_label);
- __ JumpIfSmi(input, false_label);
+ __ j(equal, true_label, true_distance);
+ __ JumpIfSmi(input, false_label, false_distance);
// Check for undetectable objects => true.
__ mov(input, FieldOperand(input, HeapObject::kMapOffset));
__ test_b(FieldOperand(input, Map::kBitFieldOffset),
@@ -6207,29 +6212,29 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
} else if (type_name->Equals(heap()->function_string())) {
STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
- __ JumpIfSmi(input, false_label);
+ __ JumpIfSmi(input, false_label, false_distance);
__ CmpObjectType(input, JS_FUNCTION_TYPE, input);
- __ j(equal, true_label);
+ __ j(equal, true_label, true_distance);
__ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE);
final_branch_condition = equal;
} else if (type_name->Equals(heap()->object_string())) {
- __ JumpIfSmi(input, false_label);
+ __ JumpIfSmi(input, false_label, false_distance);
if (!FLAG_harmony_typeof) {
__ cmp(input, factory()->null_value());
- __ j(equal, true_label);
+ __ j(equal, true_label, true_distance);
}
__ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input);
- __ j(below, false_label);
+ __ j(below, false_label, false_distance);
__ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE);
- __ j(above, false_label);
+ __ j(above, false_label, false_distance);
// Check for undetectable objects => false.
__ test_b(FieldOperand(input, Map::kBitFieldOffset),
1 << Map::kIsUndetectable);
final_branch_condition = zero;
} else {
- __ jmp(false_label);
+ __ jmp(false_label, false_distance);
}
return final_branch_condition;
}
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