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8181785: Remove the experimental ClearFPUAtPark JVM Flag

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Removing the experimental and unstable ClearFPUAtPark optimization for SPARC

Reviewed-by: kbarrett, tschatzl, rehn
This commit is contained in:
Erik Österlund 2017-06-14 08:47:27 +02:00
parent 7bea157c87
commit 2a0bd0cd04
5 changed files with 2 additions and 47 deletions
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16
hotspot/src/os/solaris/vm/os_solaris.cpp
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@ -5103,11 +5103,6 @@ void os::PlatformEvent::park() { // AKA: down()
if (v == 0) {
// Do this the hard way by blocking ...
// See http://monaco.sfbay/detail.jsf?cr=5094058.
// TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
// Only for SPARC >= V8PlusA
#if defined(__sparc) && defined(COMPILER2)
if (ClearFPUAtPark) { _mark_fpu_nosave(); }
#endif
int status = os::Solaris::mutex_lock(_mutex);
assert_status(status == 0, status, "mutex_lock");
guarantee(_nParked == 0, "invariant");
@ -5150,11 +5145,6 @@ int os::PlatformEvent::park(jlong millis) {
compute_abstime(&abst, millis);
// See http://monaco.sfbay/detail.jsf?cr=5094058.
// For Solaris SPARC set fprs.FEF=0 prior to parking.
// Only for SPARC >= V8PlusA
#if defined(__sparc) && defined(COMPILER2)
if (ClearFPUAtPark) { _mark_fpu_nosave(); }
#endif
int status = os::Solaris::mutex_lock(_mutex);
assert_status(status == 0, status, "mutex_lock");
guarantee(_nParked == 0, "invariant");
@ -5347,12 +5337,6 @@ void Parker::park(bool isAbsolute, jlong time) {
// Do this the hard way by blocking ...
// See http://monaco.sfbay/detail.jsf?cr=5094058.
// TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
// Only for SPARC >= V8PlusA
#if defined(__sparc) && defined(COMPILER2)
if (ClearFPUAtPark) { _mark_fpu_nosave(); }
#endif
if (time == 0) {
status = os::Solaris::cond_wait(_cond, _mutex);
} else {