when: emit lookupswitch/tableswitch if possible

A lookupswitch or tableswitch can be used if all conditions are equality
checks to constants. To be more specific, it can be done if:
  1. All conditions are CALL 'EQEQ(Any?, Any?)': Boolean
  2. All types of variables involved in comparison are in the same group
     of Char/Byte/Short/Int, String or enum.
  3. All arg0 refer to the same value.
  4. All arg1 are IrConst<*>.

Change-Id: Ifd7cb618395f6c5cc64601018b446f0bb7f5891c

This commit is contained in:

Ting-Yuan Huang

2019-02-18 01:48:54 -08:00

committed by

max-kammerer

parent f5d0a38629

commit c1d721a15f

10 changed files with 249 additions and 11 deletions

									
										compiler/testData/codegen/bytecodeText/when/qualifiedConstValsInsideWhen.kt
									
Vendored

		-1
	
												View File
												
				@@ -1,4 +1,3 @@

				// IGNORE_BACKEND: JVM_IR

				object Constants {

				    const val A = 30

				    const val B = 40