Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(31)

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

Issue 14971005: Remove HIsNilAndBranch (it's now unused) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 7 months 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/arm/lithium-arm.cc ('k') | src/hydrogen-instructions.h » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 4f5ab57b78798843baff3d94424e45d65800802d..3c24a2abd6299b669a97abd82380f037abd92f8b 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -2419,48 +2419,6 @@ void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) {
}
-void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) {
- Register scratch = scratch0();
- Register reg = ToRegister(instr->value());
- int false_block = chunk_->LookupDestination(instr->false_block_id());
-
- // If the expression is known to be untagged or a smi, then it's definitely
- // not null, and it can't be a an undetectable object.
- if (instr->hydrogen()->representation().IsSpecialization() ||
- instr->hydrogen()->type().IsSmi()) {
- EmitGoto(false_block);
- return;
- }
-
- int true_block = chunk_->LookupDestination(instr->true_block_id());
- Heap::RootListIndex nil_value = instr->nil() == kNullValue ?
- Heap::kNullValueRootIndex :
- Heap::kUndefinedValueRootIndex;
- __ LoadRoot(ip, nil_value);
- __ cmp(reg, ip);
- if (instr->kind() == kStrictEquality) {
- EmitBranch(true_block, false_block, eq);
- } else {
- Heap::RootListIndex other_nil_value = instr->nil() == kNullValue ?
- Heap::kUndefinedValueRootIndex :
- Heap::kNullValueRootIndex;
- Label* true_label = chunk_->GetAssemblyLabel(true_block);
- Label* false_label = chunk_->GetAssemblyLabel(false_block);
- __ b(eq, true_label);
- __ LoadRoot(ip, other_nil_value);
- __ cmp(reg, ip);
- __ b(eq, true_label);
- __ JumpIfSmi(reg, false_label);
- // Check for undetectable objects by looking in the bit field in
- // the map. The object has already been smi checked.
- __ ldr(scratch, FieldMemOperand(reg, HeapObject::kMapOffset));
- __ ldrb(scratch, FieldMemOperand(scratch, Map::kBitFieldOffset));
- __ tst(scratch, Operand(1 << Map::kIsUndetectable));
- EmitBranch(true_block, false_block, ne);
- }
-}
-
-
Condition LCodeGen::EmitIsObject(Register input,
Register temp1,
Label* is_not_object,
« no previous file with comments | « src/arm/lithium-arm.cc ('k') | src/hydrogen-instructions.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698