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3 Commits

Author SHA1 Message Date
Ting-Yuan Huang
f6cf434650 when: emit switch for String if possible 
Effectively, the following when structure:

  when (s) {
    s1, s2 -> e1,
    s3 -> e2,
    s4 -> e3,
    ...
    else -> e
  }

is implemented as:

  when (s.hashCode()) {
    h1 -> {
      if (s == s1)
        e1
      else if (s == s2)
        e1
      else if (s == s3)
        e2
      else
        e
    }
    h2 -> if (s == s3) e2 else e,
    ...
    else -> e
  }

where s1.hashCode() == s2.hashCode() == s3.hashCode() == h1,
      s4.hashCode() == h2.

A tableswitch or lookupswitch is used for the hash code lookup.

Change-Id: I087bf623dbb4a41d3cc64399a1b42342a50757a6
 2019-03-20 09:13:51 +01:00
Mads Ager
3a11322506 Enable bytecode text tests for the JVM_IR backend. 2018-12-21 16:20:45 +01:00
Denis Zharkov
8d8c3d2b9e When2Switch: generate ifnonnull check for nullable values before *switch-opcode 2014-07-21 17:13:56 +04:00