ARM64: Add new String.compareTo intrinsic.
Benchmarked on Nexus6P big, little, and all cores. The new intrinsic
is faster than pStringCompareTo for compare lengths on [1,512], so the
runtime call is no longer needed.
Change-Id: If94bfe24d9bf4dddcca648cc0b563709fc407b34
diff --git a/runtime/arch/arm64/entrypoints_init_arm64.cc b/runtime/arch/arm64/entrypoints_init_arm64.cc
index 4db9411..f271596 100644
--- a/runtime/arch/arm64/entrypoints_init_arm64.cc
+++ b/runtime/arch/arm64/entrypoints_init_arm64.cc
@@ -134,7 +134,8 @@
// Intrinsics
qpoints->pIndexOf = art_quick_indexof;
- qpoints->pStringCompareTo = art_quick_string_compareto;
+ // The ARM64 StringCompareTo intrinsic does not call the runtime.
+ qpoints->pStringCompareTo = nullptr;
qpoints->pMemcpy = memcpy;
// Invocation