Update V8 to r5214 as required by WebKit r65072.
Change-Id: I387277a00cc0949597c0f69a8e4f2da60213c8f2
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index ad22cd9..9c25ccd 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -1728,6 +1728,34 @@
}
+// Copies a fixed number of fields of heap objects from src to dst.
+void MacroAssembler::CopyFields(Register dst,
+ Register src,
+ RegList temps,
+ int field_count) {
+ // At least one bit set in the first 15 registers.
+ ASSERT((temps & ((1 << 15) - 1)) != 0);
+ ASSERT((temps & dst.bit()) == 0);
+ ASSERT((temps & src.bit()) == 0);
+ // Primitive implementation using only one temporary register.
+
+ Register tmp = no_reg;
+ // Find a temp register in temps list.
+ for (int i = 0; i < 15; i++) {
+ if ((temps & (1 << i)) != 0) {
+ tmp.set_code(i);
+ break;
+ }
+ }
+ ASSERT(!tmp.is(no_reg));
+
+ for (int i = 0; i < field_count; i++) {
+ ldr(tmp, FieldMemOperand(src, i * kPointerSize));
+ str(tmp, FieldMemOperand(dst, i * kPointerSize));
+ }
+}
+
+
void MacroAssembler::CountLeadingZeros(Register zeros, // Answer.
Register source, // Input.
Register scratch) {