Revision: 6785
Author: [email protected]
Date: Tue Feb 15 02:22:24 2011
Log: ARM: Implement DoHasCachedArrayIndex and
DoHasCachedArrayIndexAndBranch.
Review URL: http://codereview.chromium.org/6519009
http://code.google.com/p/v8/source/detail?r=6785
Modified:
/branches/bleeding_edge/src/arm/lithium-codegen-arm.cc
=======================================
--- /branches/bleeding_edge/src/arm/lithium-codegen-arm.cc Mon Feb 14
15:41:47 2011
+++ /branches/bleeding_edge/src/arm/lithium-codegen-arm.cc Tue Feb 15
02:22:24 2011
@@ -1897,13 +1897,32 @@
void LCodeGen::DoHasCachedArrayIndex(LHasCachedArrayIndex* instr) {
- Abort("DoHasCachedArrayIndex unimplemented.");
+ Register input = ToRegister(instr->InputAt(0));
+ Register result = ToRegister(instr->result());
+ Register scratch = scratch0();
+
+ ASSERT(instr->hydrogen()->value()->representation().IsTagged());
+ __ ldr(scratch,
+ FieldMemOperand(input, String::kContainsCachedArrayIndexMask));
+ __ tst(scratch, Operand(String::kContainsCachedArrayIndexMask));
+ __ LoadRoot(result, Heap::kTrueValueRootIndex, ne);
+ __ LoadRoot(result, Heap::kFalseValueRootIndex, eq);
}
void LCodeGen::DoHasCachedArrayIndexAndBranch(
LHasCachedArrayIndexAndBranch* instr) {
- Abort("DoHasCachedArrayIndexAndBranch unimplemented.");
+ Register input = ToRegister(instr->InputAt(0));
+ Register scratch = scratch0();
+
+ int true_block = chunk_->LookupDestination(instr->true_block_id());
+ int false_block = chunk_->LookupDestination(instr->false_block_id());
+
+ ASSERT(instr->hydrogen()->value()->representation().IsTagged());
+ __ ldr(scratch,
+ FieldMemOperand(input, String::kContainsCachedArrayIndexMask));
+ __ tst(scratch, Operand(String::kContainsCachedArrayIndexMask));
+ EmitBranch(true_block, false_block, ne);
}
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