Mercurial > hg > truffle
diff src/cpu/ppc/vm/globals_ppc.hpp @ 14440:41b780b43b74
8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn
author | goetz |
---|---|
date | Wed, 27 Nov 2013 16:16:21 -0800 |
parents | b0133e4187d3 |
children | 67fa91961822 |
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--- a/src/cpu/ppc/vm/globals_ppc.hpp Tue Nov 26 18:38:19 2013 -0800 +++ b/src/cpu/ppc/vm/globals_ppc.hpp Wed Nov 27 16:16:21 2013 -0800 @@ -38,6 +38,7 @@ define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks. +define_pd_global(bool, TrapBasedNullChecks, true); define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast. // Use large code-entry alignment. @@ -100,12 +101,6 @@ product(bool, TrapBasedNotEntrantChecks, true, \ "Raise and handle SIGTRAP if calling not entrant or zombie" \ " method.") \ - product(bool, TrapBasedNullChecks, true, \ - "Generate code for null checks that uses a cmp and trap " \ - "instruction raising SIGTRAP. This is only used if an access to" \ - "null (+offset) will not raise a SIGSEGV.") \ - product(bool, TrapBasedRangeChecks, true, \ - "Raise and handle SIGTRAP if array out of bounds check fails.") \ product(bool, TraceTraps, false, "Trace all traps the signal handler" \ "handles.") \ \