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[JVM_IR, IR] Remove more needless temporary variables.

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Avoid using a separate origin for temporary variables introduced
for for loops. That doesn't add anything and gives one more case
for optimizations to deal with.

Extend the JVM specific optimizations to remove temporary
variables to deal with more cases encountered in for loops
lowering.
This commit is contained in:
Mads Ager
2019-08-29 12:52:03 +02:00
committed by max-kammerer
parent e5a1040dbd
commit 90a37617a4
7 changed files with 29 additions and 24 deletions
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compiler/testData/ir/irText/expressions/for.txt
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+1 -1
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@@ -41,7 +41,7 @@ FILE fqName:<root> fileName:/for.kt
condition: CALL 'public abstract fun hasNext (): kotlin.Boolean declared in kotlin.collections.Iterator' type=kotlin.Boolean origin=FOR_LOOP_HAS_NEXT
$this: GET_VAR 'val tmp0_iterator: kotlin.collections.Iterator<kotlin.Pair<kotlin.Int, kotlin.String>> [val] declared in <root>.testDestructuring' type=kotlin.collections.Iterator<kotlin.Pair<kotlin.Int, kotlin.String>> origin=null
body: BLOCK type=kotlin.Unit origin=FOR_LOOP_INNER_WHILE
VAR FOR_LOOP_IMPLICIT_VARIABLE name:tmp1_loop_parameter type:kotlin.Pair<kotlin.Int, kotlin.String> [val]
VAR IR_TEMPORARY_VARIABLE name:tmp1_loop_parameter type:kotlin.Pair<kotlin.Int, kotlin.String> [val]
CALL 'public abstract fun next (): T of kotlin.collections.Iterator declared in kotlin.collections.Iterator' type=kotlin.Pair<kotlin.Int, kotlin.String> origin=FOR_LOOP_NEXT
$this: GET_VAR 'val tmp0_iterator: kotlin.collections.Iterator<kotlin.Pair<kotlin.Int, kotlin.String>> [val] declared in <root>.testDestructuring' type=kotlin.collections.Iterator<kotlin.Pair<kotlin.Int, kotlin.String>> origin=null
VAR name:i type:kotlin.Int [val]