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[PSI2IR] Propagate smart cast information for variable loads.

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This gives us more precise type information and can enable backend
optimizations. This was motivated by when expressions not compiled
to table switches in the JVM_IR backend.

Fixed KT-36845.
This commit is contained in:
Mads Ager
2020-12-17 12:51:53 +01:00
committed by Dmitry Petrov
parent 98a9e142e8
commit 6fc0de39c2
24 changed files with 59 additions and 69 deletions
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compiler/testData/ir/irText/expressions/floatingPointComparisons/nullableAnyAsIntToDouble.kt.txt
Vendored
+1 -7
View File
@@ -1,12 +1,6 @@
fun test(x: Any?, y: Double): Boolean {
return when {
x is Int -> less(arg0 = { // BLOCK
val tmp0_safe_receiver: Any? = x
when {
EQEQ(arg0 = tmp0_safe_receiver, arg1 = null) -> null
else -> tmp0_safe_receiver /*as Int */.toDouble()
}
}, arg1 = y)
x is Int -> less(arg0 = x /*as Int */.toDouble(), arg1 = y)
else -> false
}
}
compiler/testData/ir/irText/expressions/floatingPointComparisons/nullableAnyAsIntToDouble.txt
Vendored
+2 -13
View File
@@ -9,20 +9,9 @@ FILE fqName:<root> fileName:/nullableAnyAsIntToDouble.kt
if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.Int
GET_VAR 'x: kotlin.Any? declared in <root>.test' type=kotlin.Any? origin=null
then: CALL 'public final fun less (arg0: kotlin.Double, arg1: kotlin.Double): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=LT
arg0: BLOCK type=kotlin.Double? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:kotlin.Any? [val]
arg0: CALL 'public open fun toDouble (): kotlin.Double declared in kotlin.Int' type=kotlin.Double origin=null
$this: TYPE_OP type=kotlin.Int origin=IMPLICIT_CAST typeOperand=kotlin.Int
GET_VAR 'x: kotlin.Any? declared in <root>.test' type=kotlin.Any? origin=null
WHEN type=kotlin.Double? origin=null
BRANCH
if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
arg0: GET_VAR 'val tmp_0: kotlin.Any? [val] declared in <root>.test' type=kotlin.Any? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CONST Null type=kotlin.Nothing? value=null
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: CALL 'public open fun toDouble (): kotlin.Double declared in kotlin.Int' type=kotlin.Double origin=null
$this: TYPE_OP type=kotlin.Int origin=IMPLICIT_CAST typeOperand=kotlin.Int
GET_VAR 'val tmp_0: kotlin.Any? [val] declared in <root>.test' type=kotlin.Any? origin=null
arg1: GET_VAR 'y: kotlin.Double declared in <root>.test' type=kotlin.Double origin=null
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true