Revision: 20014
Author: [email protected]
Date: Mon Mar 17 18:27:44 2014 UTC
Log: MIPS: Utility functions for pretenure call new.
Port r19998 (6b07a42)
Original commit message:
These functions aren't yet called in the tree but will be in the next days.
AssertUndefinedOrAllocationSite is to be used in several places where
AllocationSite feedback is optional.
BUG=
[email protected]
Review URL: https://codereview.chromium.org/196423018
Patch from Balazs Kilvady <[email protected]>.
http://code.google.com/p/v8/source/detail?r=20014
Modified:
/branches/bleeding_edge/src/mips/macro-assembler-mips.cc
/branches/bleeding_edge/src/mips/macro-assembler-mips.h
=======================================
--- /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Mon Mar 10
19:50:36 2014 UTC
+++ /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Mon Mar 17
18:27:44 2014 UTC
@@ -4815,6 +4815,23 @@
pop(object);
}
}
+
+
+void MacroAssembler::AssertUndefinedOrAllocationSite(Register object,
+ Register scratch) {
+ if (emit_debug_code()) {
+ Label done_checking;
+ AssertNotSmi(object);
+ LoadRoot(scratch, Heap::kUndefinedValueRootIndex);
+ Branch(&done_checking, eq, object, Operand(scratch));
+ push(object);
+ lw(object, FieldMemOperand(object, HeapObject::kMapOffset));
+ LoadRoot(scratch, Heap::kAllocationSiteMapRootIndex);
+ Assert(eq, kExpectedUndefinedOrCell, object, Operand(scratch));
+ pop(object);
+ bind(&done_checking);
+ }
+}
void MacroAssembler::AssertIsRoot(Register reg, Heap::RootListIndex index)
{
=======================================
--- /branches/bleeding_edge/src/mips/macro-assembler-mips.h Mon Mar 10
19:50:36 2014 UTC
+++ /branches/bleeding_edge/src/mips/macro-assembler-mips.h Mon Mar 17
18:27:44 2014 UTC
@@ -1432,6 +1432,10 @@
// Abort execution if argument is not a name, enabled via --debug-code.
void AssertName(Register object);
+ // Abort execution if argument is not undefined or an AllocationSite,
enabled
+ // via --debug-code.
+ void AssertUndefinedOrAllocationSite(Register object, Register scratch);
+
// Abort execution if reg is not the root value with the given index,
// enabled via --debug-code.
void AssertIsRoot(Register reg, Heap::RootListIndex index);
--
--
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