diff options
Diffstat (limited to 'compiler/optimizing/intrinsics_arm_vixl.cc')
| -rw-r--r-- | compiler/optimizing/intrinsics_arm_vixl.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/compiler/optimizing/intrinsics_arm_vixl.cc b/compiler/optimizing/intrinsics_arm_vixl.cc index 396ff62a16..f0aa92e981 100644 --- a/compiler/optimizing/intrinsics_arm_vixl.cc +++ b/compiler/optimizing/intrinsics_arm_vixl.cc @@ -1529,8 +1529,16 @@ void IntrinsicCodeGeneratorARMVIXL::VisitStringEquals(HInvoke* invoke) { // All string objects must have the same type since String cannot be subclassed. // Receiver must be a string object, so its class field is equal to all strings' class fields. // If the argument is a string object, its class field must be equal to receiver's class field. + // + // As the String class is expected to be non-movable, we can read the class + // field from String.equals' arguments without read barriers. + AssertNonMovableStringClass(); + // /* HeapReference<Class> */ temp = str->klass_ __ Ldr(temp, MemOperand(str, class_offset)); + // /* HeapReference<Class> */ out = arg->klass_ __ Ldr(out, MemOperand(arg, class_offset)); + // Also, because we use the previously loaded class references only in the + // following comparison, we don't need to unpoison them. __ Cmp(temp, out); __ B(ne, &return_false, /* is_far_target= */ false); } |