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comparison src/share/vm/opto/machnode.hpp @ 17877:17b2fbdb6637

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8038297: Avoid placing CTI immediately following cbcond instruction on T4 Summary: Insert a nop between cbcond and CTI Reviewed-by: kvn, twisti
author iveresov
date Thu, 10 Apr 2014 23:15:13 -0700
parents 62c54fcc0a35
children 52b4284cb496 fc2c88ea11a9
comparison
equal deleted inserted replaced
17875:cb1b723cbca8 17877:17b2fbdb6637
208 208
209 // Support for short branches 209 // Support for short branches
210 bool may_be_short_branch() const { return (flags() & Flag_may_be_short_branch) != 0; } 210 bool may_be_short_branch() const { return (flags() & Flag_may_be_short_branch) != 0; }
211 211
212 // Avoid back to back some instructions on some CPUs. 212 // Avoid back to back some instructions on some CPUs.
213 bool avoid_back_to_back() const { return (flags() & Flag_avoid_back_to_back) != 0; } 213 enum AvoidBackToBackFlag { AVOID_NONE = 0,
214 AVOID_BEFORE = Flag_avoid_back_to_back_before,
215 AVOID_AFTER = Flag_avoid_back_to_back_after,
216 AVOID_BEFORE_AND_AFTER = AVOID_BEFORE | AVOID_AFTER };
217
218 bool avoid_back_to_back(AvoidBackToBackFlag flag_value) const {
219 return (flags() & flag_value) == flag_value;
220 }
214 221
215 // instruction implemented with a call 222 // instruction implemented with a call
216 bool has_call() const { return (flags() & Flag_has_call) != 0; } 223 bool has_call() const { return (flags() & Flag_has_call) != 0; }
217 224
218 // First index in _in[] corresponding to operand, or -1 if there is none 225 // First index in _in[] corresponding to operand, or -1 if there is none