ARM: Let the register allocator handle the context register.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index fd515218cb075295830946327624eb0114d4101e..8fcde6b4318856dcec4b4b0089f39e05282537be 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -478,11 +478,6 @@ void MacroAssembler::RecordWrite(Register object,
                                  SaveFPRegsMode fp_mode,
                                  RememberedSetAction remembered_set_action,
                                  SmiCheck smi_check) {
-  // The compiled code assumes that record write doesn't change the
-  // context register, so we check that none of the clobbered
-  // registers are cp.
-  ASSERT(!address.is(cp) && !value.is(cp));
-
   if (emit_debug_code()) {
     ldr(ip, MemOperand(address));
     cmp(ip, value);