--- a/hotspot/src/share/vm/classfile/vmSymbols.cpp Fri Oct 30 00:02:37 2015 +0100
+++ b/hotspot/src/share/vm/classfile/vmSymbols.cpp Thu Nov 05 19:31:57 2015 +0100
@@ -417,36 +417,10 @@
}
}
-bool vmIntrinsics::is_disabled_by_flags(const methodHandle& method, const methodHandle& compilation_context) {
+bool vmIntrinsics::is_disabled_by_flags(const methodHandle& method) {
vmIntrinsics::ID id = method->intrinsic_id();
assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
- // Check if the intrinsic corresponding to 'method' has been disabled on
- // the command line by using the DisableIntrinsic flag (either globally
- // or on a per-method level, see src/share/vm/compiler/abstractCompiler.hpp
- // for details).
- // Usually, the compilation context is the caller of the method 'method'.
- // The only case when for a non-recursive method 'method' the compilation context
- // is not the caller of the 'method' (but it is the method itself) is
- // java.lang.ref.Referene::get.
- // For java.lang.ref.Reference::get, the intrinsic version is used
- // instead of the compiled version so that the value in the referent
- // field can be registered by the G1 pre-barrier code. The intrinsified
- // version of Reference::get also adds a memory barrier to prevent
- // commoning reads from the referent field across safepoint since GC
- // can change the referent field's value. See Compile::Compile()
- // in src/share/vm/opto/compile.cpp or
- // GraphBuilder::GraphBuilder() in src/share/vm/c1/c1_GraphBuilder.cpp
- // for more details.
- ccstr disable_intr = NULL;
- if ((DisableIntrinsic[0] != '\0' && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) ||
- (!compilation_context.is_null() &&
- CompilerOracle::has_option_value(compilation_context, "DisableIntrinsic", disable_intr) &&
- strstr(disable_intr, vmIntrinsics::name_at(id)) != NULL)
- ) {
- return true;
- }
-
// -XX:-InlineNatives disables nearly all intrinsics except the ones listed in
// the following switch statement.
if (!InlineNatives) {