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8038297: Avoid placing CTI immediately following cbcond instruction on T4

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Insert a nop between cbcond and CTI

Reviewed-by: kvn, twisti
This commit is contained in:
Igor Veresov 2014-04-10 23:15:13 -07:00
parent b3c9d243d3
commit e6456ff2a4
8 changed files with 125 additions and 65 deletions
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21
hotspot/src/share/vm/opto/node.hpp
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@ -645,17 +645,18 @@ public:
// Flags are sorted by usage frequency.
enum NodeFlags {
Flag_is_Copy = 0x01, // should be first bit to avoid shift
Flag_rematerialize = Flag_is_Copy << 1,
Flag_is_Copy = 0x01, // should be first bit to avoid shift
Flag_rematerialize = Flag_is_Copy << 1,
Flag_needs_anti_dependence_check = Flag_rematerialize << 1,
Flag_is_macro = Flag_needs_anti_dependence_check << 1,
Flag_is_Con = Flag_is_macro << 1,
Flag_is_cisc_alternate = Flag_is_Con << 1,
Flag_is_dead_loop_safe = Flag_is_cisc_alternate << 1,
Flag_may_be_short_branch = Flag_is_dead_loop_safe << 1,
Flag_avoid_back_to_back = Flag_may_be_short_branch << 1,
Flag_has_call = Flag_avoid_back_to_back << 1,
Flag_is_expensive = Flag_has_call << 1,
Flag_is_macro = Flag_needs_anti_dependence_check << 1,
Flag_is_Con = Flag_is_macro << 1,
Flag_is_cisc_alternate = Flag_is_Con << 1,
Flag_is_dead_loop_safe = Flag_is_cisc_alternate << 1,
Flag_may_be_short_branch = Flag_is_dead_loop_safe << 1,
Flag_avoid_back_to_back_before = Flag_may_be_short_branch << 1,
Flag_avoid_back_to_back_after = Flag_avoid_back_to_back_before << 1,
Flag_has_call = Flag_avoid_back_to_back_after << 1,
Flag_is_expensive = Flag_has_call << 1,
_max_flags = (Flag_is_expensive << 1) - 1 // allow flags combination
};