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MIPS: Properly check fast array property in StoreIC::GenerateArrayLength.

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This is the cleanup of an old todo from r10254 (93483b6eb).

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9570010
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10896 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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mstarzinger@chromium.org 2012-03-01 17:20:11 +00:00
parent fde2ae0fc7
commit 774e3f4575
1 changed files with 4 additions and 1 deletions
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5
src/mips/ic-mips.cc
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@ -1571,7 +1571,10 @@ void StoreIC::GenerateArrayLength(MacroAssembler* masm) {
// Check that the array has fast properties, otherwise the length
// property might have been redefined.
// TODO(mstarzinger): Port this check to MIPS.
__ lw(scratch, FieldMemOperand(receiver, JSArray::kPropertiesOffset));
__ lw(scratch, FieldMemOperand(scratch, FixedArray::kMapOffset));
__ LoadRoot(at, Heap::kHashTableMapRootIndex);
__ Branch(&miss, eq, scratch, Operand(at));
// Check that value is a smi.
__ JumpIfNotSmi(value, &miss);