Revision: 7042
Author: [email protected]
Date: Thu Mar 3 04:21:37 2011
Log: Add new ARM macro assembler function CompareRoot left out of previous
commit.
Review URL: http://codereview.chromium.org/6614015
http://code.google.com/p/v8/source/detail?r=7042
Modified:
/branches/bleeding_edge/src/arm/macro-assembler-arm.cc
/branches/bleeding_edge/src/arm/macro-assembler-arm.h
=======================================
--- /branches/bleeding_edge/src/arm/macro-assembler-arm.cc Wed Mar 2
06:40:38 2011
+++ /branches/bleeding_edge/src/arm/macro-assembler-arm.cc Thu Mar 3
04:21:37 2011
@@ -1535,6 +1535,14 @@
ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset));
cmp(type_reg, Operand(type));
}
+
+
+void MacroAssembler::CompareRoot(Register obj,
+ Heap::RootListIndex index) {
+ ASSERT(!obj.is(ip));
+ LoadRoot(ip, index);
+ cmp(obj, ip);
+}
void MacroAssembler::CheckMap(Register obj,
@@ -2342,9 +2350,7 @@
void MacroAssembler::AbortIfNotRootValue(Register src,
Heap::RootListIndex
root_value_index,
const char* message) {
- ASSERT(!src.is(ip));
- LoadRoot(ip, root_value_index);
- cmp(src, ip);
+ CompareRoot(src, root_value_index);
Assert(eq, message);
}
=======================================
--- /branches/bleeding_edge/src/arm/macro-assembler-arm.h Wed Mar 2
01:31:42 2011
+++ /branches/bleeding_edge/src/arm/macro-assembler-arm.h Thu Mar 3
04:21:37 2011
@@ -577,6 +577,11 @@
bool is_heap_object);
+ // Compare the object in a register to a value from the root list.
+ // Uses the ip register as scratch.
+ void CompareRoot(Register obj, Heap::RootListIndex index);
+
+
// Load and check the instance type of an object for being a string.
// Loads the type into the second argument register.
// Returns a condition that will be enabled if the object was a string.
--
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