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fix redefinition optimization for -"literal string" (UMinus)

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Unfortunately this enlarges insns.def by yet another
instruction.  However, it is much prettier than opt_str_freeze
in use, and maybe we can avoid having so many instructions in
the future.

[ruby-core:80368]

* insns.def (DEFINE_INSN): new instruction: opt_str_uminus (maybe temporary)
* compile.c (iseq_compile_each0): split instructions
* test/ruby/test_optimization.rb (test_string_uminus): new test
* vm.c (vm_init_redefined_flag): set redefinintion flag for uminus
* vm_core.h (enum ruby_basic_operators): add BOP_UMINUS

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58144 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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normal 2017-03-27 06:12:37 +00:00
parent 833e42d120
commit 669a55dfed
5 changed files with 27 additions and 1 deletions
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vm_core.h
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@ -454,6 +454,7 @@ enum ruby_basic_operators {
BOP_NEQ,
BOP_MATCH,
BOP_FREEZE,
BOP_UMINUS,
BOP_MAX,
BOP_MIN,