Revision: 10985
Author: [email protected]
Date: Fri Mar 9 04:30:04 2012
Log: MIPS: Introduce basic type feedback for for-in statements to
avoid deopts.
Port r10901 (a54f1a3).
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/9586004
Patch from Daniel Kalmar <[email protected]>.
http://code.google.com/p/v8/source/detail?r=10985
Modified:
/branches/bleeding_edge/src/mips/full-codegen-mips.cc
=======================================
--- /branches/bleeding_edge/src/mips/full-codegen-mips.cc Wed Mar 7
05:24:44 2012
+++ /branches/bleeding_edge/src/mips/full-codegen-mips.cc Fri Mar 9
04:30:04 2012
@@ -1015,6 +1015,16 @@
// We got a fixed array in register v0. Iterate through that.
Label non_proxy;
__ bind(&fixed_array);
+
+ Handle<JSGlobalPropertyCell> cell =
+ isolate()->factory()->NewJSGlobalPropertyCell(
+ Handle<Object>(
+ Smi::FromInt(TypeFeedbackCells::kForInFastCaseMarker)));
+ RecordTypeFeedbackCell(stmt->PrepareId(), cell);
+ __ LoadHeapObject(a1, cell);
+ __ li(a2,
Operand(Smi::FromInt(TypeFeedbackCells::kForInSlowCaseMarker)));
+ __ sw(a2, FieldMemOperand(a1, JSGlobalPropertyCell::kValueOffset));
+
__ li(a1, Operand(Smi::FromInt(1))); // Smi indicates slow check
__ lw(a2, MemOperand(sp, 0 * kPointerSize)); // Get enumerated object
STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE);
--
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