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8132457: Unify command-line flags controlling the usage of compiler intrinsics

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Cleanup processing of command-line flags controlling intrinsics.

Reviewed-by: kvn
This commit is contained in:
Zoltan Majo 2015-08-03 09:39:29 +02:00
parent fd2f61a53f
commit 26cd440c55
11 changed files with 88 additions and 148 deletions
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14
hotspot/src/share/vm/compiler/abstractCompiler.hpp
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@ -75,8 +75,8 @@ class AbstractCompiler : public CHeapObj<mtCompiler> {
//
// The second parameter, 'compilation_context', is needed to implement functionality
// related to the DisableIntrinsic command-line flag. The DisableIntrinsic flag can
// be used to prohibit the C2 compiler (but not the C1 compiler) to use an intrinsic.
// There are three ways to disable an intrinsic using the DisableIntrinsic flag:
// be used to prohibit the compilers to use an intrinsic. There are three ways to
// disable an intrinsic using the DisableIntrinsic flag:
//
// (1) -XX:DisableIntrinsic=_hashCode,_getClass
// Disables intrinsification of _hashCode and _getClass globally
@ -96,7 +96,8 @@ class AbstractCompiler : public CHeapObj<mtCompiler> {
// compilation context is aClass::aMethod and java.lang.ref.Reference::get,
// respectively.
virtual bool is_intrinsic_available(methodHandle method, methodHandle compilation_context) {
return false;
return is_intrinsic_supported(method) &&
!vmIntrinsics::is_disabled_by_flags(method, compilation_context);
}
// Determines if an intrinsic is supported by the compiler, that is,
@ -111,13 +112,6 @@ class AbstractCompiler : public CHeapObj<mtCompiler> {
return false;
}
// Implements compiler-specific processing of command-line flags.
// Processing of command-line flags common to all compilers is implemented
// in vmIntrinsicss::is_disabled_by_flag.
virtual bool is_intrinsic_disabled_by_flag(methodHandle method) {
return false;
}
// Compiler type queries.
bool is_c1() { return _type == c1; }
bool is_c2() { return _type == c2; }