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IR: '!!' is generated as 'CHECK_NOT_NULL' intrinsic

Browse Source 
```
fun <T : Any> CHECK_NOT_NULL(x: T?): x =
  if (x != null) x else throw NullPointerException(...)
```

This allows to compile both Kotlin/JVM and Kotlin/JS effectively.
This commit is contained in:
Dmitry Petrov
2019-08-08 16:22:48 +03:00
parent b9db4148cc
commit 7170439517
12 changed files with 217 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/testData/ir/irText/expressions/bangbang.fir.txt
Vendored
+60
View File
@@ -34,3 +34,63 @@ FILE fqName:<root> fileName:/bangbang.kt
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val <bangbang>: kotlin.Int [val] declared in <root>.test2' type=kotlin.Int origin=null
FUN name:test3 visibility:public modality:FINAL <X> (a:X of <root>.test3) returnType:X of <root>.test3
TYPE_PARAMETER name:X index:0 variance: superTypes:[]
VALUE_PARAMETER name:a index:0 type:X of <root>.test3
BLOCK_BODY
RETURN type=kotlin.Nothing from='public final fun test3 <X> (a: X of <root>.test3): X of <root>.test3 declared in <root>'
BLOCK type=X of <root>.test3 origin=EXCLEXCL
VAR name:<bangbang> type:X of <root>.test3 [val]
GET_VAR 'a: X of <root>.test3 declared in <root>.test3' type=X of <root>.test3 origin=null
WHEN type=X of <root>.test3 origin=EXCLEXCL
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 <bangbang>: X of <root>.test3 [val] declared in <root>.test3' type=X of <root>.test3 origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: THROW type=kotlin.Nothing
ERROR_CALL 'Unresolved reference: <Unresolved name: KotlinNullPointerException>#' type=IrErrorType
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val <bangbang>: X of <root>.test3 [val] declared in <root>.test3' type=X of <root>.test3 origin=null
FUN name:useString visibility:public modality:FINAL <> (s:kotlin.String) returnType:kotlin.Unit
VALUE_PARAMETER name:s index:0 type:kotlin.String
BLOCK_BODY
FUN name:test4 visibility:public modality:FINAL <X> (a:X of <root>.test4) returnType:kotlin.Unit
TYPE_PARAMETER name:X index:0 variance: superTypes:[]
VALUE_PARAMETER name:a index:0 type:X of <root>.test4
BLOCK_BODY
WHEN type=kotlin.Unit origin=IF
BRANCH
if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.String?
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
then: BLOCK type=kotlin.Unit origin=EXCLEXCL
VAR name:<bangbang> type:X of <root>.test4 [val]
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
WHEN type=kotlin.Unit origin=EXCLEXCL
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 <bangbang>: X of <root>.test4 [val] declared in <root>.test4' type=X of <root>.test4 origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: THROW type=kotlin.Nothing
ERROR_CALL 'Unresolved reference: <Unresolved name: KotlinNullPointerException>#' type=IrErrorType
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val <bangbang>: X of <root>.test4 [val] declared in <root>.test4' type=X of <root>.test4 origin=null
WHEN type=kotlin.Unit origin=IF
BRANCH
if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.String?
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
then: ERROR_CALL 'Unresolved reference: <Inapplicable(INAPPLICABLE): [/useString]>#' type=IrErrorType
BLOCK type=X of <root>.test4 origin=EXCLEXCL
VAR name:<bangbang> type:X of <root>.test4 [val]
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
WHEN type=X of <root>.test4 origin=EXCLEXCL
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 <bangbang>: X of <root>.test4 [val] declared in <root>.test4' type=X of <root>.test4 origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: THROW type=kotlin.Nothing
ERROR_CALL 'Unresolved reference: <Unresolved name: KotlinNullPointerException>#' type=IrErrorType
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val <bangbang>: X of <root>.test4 [val] declared in <root>.test4' type=X of <root>.test4 origin=null
compiler/testData/ir/irText/expressions/bangbang.kt
Vendored
+9 -1
View File
@@ -1,3 +1,11 @@
fun test1(a: Any?) = a!!
fun test2(a: Any?) = a?.hashCode()!!
fun test2(a: Any?) = a?.hashCode()!!
fun <X> test3(a: X) = a!!
fun useString(s: String) {}
fun <X> test4(a: X) {
if (a is String?) a!!
if (a is String?) useString(a!!)
}
compiler/testData/ir/irText/expressions/bangbang.txt
Vendored
+50 -36
View File
@@ -3,43 +3,57 @@ FILE fqName:<root> fileName:/bangbang.kt
VALUE_PARAMETER name:a index:0 type:kotlin.Any?
BLOCK_BODY
RETURN type=kotlin.Nothing from='public final fun test1 (a: kotlin.Any?): kotlin.Any declared in <root>'
BLOCK type=kotlin.Any origin=EXCLEXCL
VAR IR_TEMPORARY_VARIABLE name:tmp0_notnull type:kotlin.Any? [val]
GET_VAR 'a: kotlin.Any? declared in <root>.test1' type=kotlin.Any? origin=null
WHEN type=kotlin.Any 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 tmp0_notnull: kotlin.Any? [val] declared in <root>.test1' type=kotlin.Any? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CALL 'public final fun THROW_NPE (): kotlin.Nothing declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp0_notnull: kotlin.Any? [val] declared in <root>.test1' type=kotlin.Any? origin=null
CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=kotlin.Any origin=EXCLEXCL
<T>: kotlin.Any
x: GET_VAR 'a: kotlin.Any? declared in <root>.test1' type=kotlin.Any? origin=null
FUN name:test2 visibility:public modality:FINAL <> (a:kotlin.Any?) returnType:kotlin.Int
VALUE_PARAMETER name:a index:0 type:kotlin.Any?
BLOCK_BODY
RETURN type=kotlin.Nothing from='public final fun test2 (a: kotlin.Any?): kotlin.Int declared in <root>'
BLOCK type=kotlin.Int origin=EXCLEXCL
VAR IR_TEMPORARY_VARIABLE name:tmp1_notnull type:kotlin.Int? [val]
BLOCK type=kotlin.Int? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp0_safe_receiver type:kotlin.Any? [val]
GET_VAR 'a: kotlin.Any? declared in <root>.test2' type=kotlin.Any? origin=null
WHEN type=kotlin.Int? 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 tmp0_safe_receiver: kotlin.Any? [val] declared in <root>.test2' 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 hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
$this: GET_VAR 'val tmp0_safe_receiver: kotlin.Any? [val] declared in <root>.test2' type=kotlin.Any? origin=null
WHEN type=kotlin.Int 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 tmp1_notnull: kotlin.Int? [val] declared in <root>.test2' type=kotlin.Int? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CALL 'public final fun THROW_NPE (): kotlin.Nothing declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp1_notnull: kotlin.Int? [val] declared in <root>.test2' type=kotlin.Int? origin=null
CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=kotlin.Int origin=EXCLEXCL
<T>: kotlin.Int
x: BLOCK type=kotlin.Int? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp0_safe_receiver type:kotlin.Any? [val]
GET_VAR 'a: kotlin.Any? declared in <root>.test2' type=kotlin.Any? origin=null
WHEN type=kotlin.Int? 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 tmp0_safe_receiver: kotlin.Any? [val] declared in <root>.test2' 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 hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
$this: GET_VAR 'val tmp0_safe_receiver: kotlin.Any? [val] declared in <root>.test2' type=kotlin.Any? origin=null
FUN name:test3 visibility:public modality:FINAL <X> (a:X of <root>.test3) returnType:X of <root>.test3
TYPE_PARAMETER name:X index:0 variance: superTypes:[kotlin.Any?]
VALUE_PARAMETER name:a index:0 type:X of <root>.test3
BLOCK_BODY
RETURN type=kotlin.Nothing from='public final fun test3 <X> (a: X of <root>.test3): X of <root>.test3 declared in <root>'
CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=X of <root>.test3 origin=EXCLEXCL
<T>: X of <root>.test3
x: GET_VAR 'a: X of <root>.test3 declared in <root>.test3' type=X of <root>.test3 origin=null
FUN name:useString visibility:public modality:FINAL <> (s:kotlin.String) returnType:kotlin.Unit
VALUE_PARAMETER name:s index:0 type:kotlin.String
BLOCK_BODY
FUN name:test4 visibility:public modality:FINAL <X> (a:X of <root>.test4) returnType:kotlin.Unit
TYPE_PARAMETER name:X index:0 variance: superTypes:[kotlin.Any?]
VALUE_PARAMETER name:a index:0 type:X of <root>.test4
BLOCK_BODY
WHEN type=kotlin.Unit origin=IF
BRANCH
if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.String?
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
then: TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=X of <root>.test4 origin=EXCLEXCL
<T>: X of <root>.test4
x: GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
WHEN type=kotlin.Unit origin=IF
BRANCH
if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.String?
GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
then: CALL 'public final fun useString (s: kotlin.String): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
s: TYPE_OP type=kotlin.String origin=IMPLICIT_CAST typeOperand=kotlin.String
CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=X of <root>.test4 origin=EXCLEXCL
<T>: X of <root>.test4
x: GET_VAR 'a: X of <root>.test4 declared in <root>.test4' type=X of <root>.test4 origin=null
compiler/testData/ir/irText/expressions/floatingPointComparisons/eqeqRhsConditionPossiblyAffectingLhs.txt
Vendored
+3 -12
View File
@@ -9,18 +9,9 @@ FILE fqName:<root> fileName:/eqeqRhsConditionPossiblyAffectingLhs.kt
BRANCH
if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=kotlin.Double
GET_VAR 'x: kotlin.Any declared in <root>.test' type=kotlin.Any origin=null
then: BLOCK type=kotlin.Nothing origin=EXCLEXCL
VAR IR_TEMPORARY_VARIABLE name:tmp0_notnull type:kotlin.Nothing? [val]
CONST Null type=kotlin.Nothing? value=null
WHEN type=kotlin.Nothing 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 tmp0_notnull: kotlin.Nothing? [val] declared in <root>.test' type=kotlin.Nothing? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CALL 'public final fun THROW_NPE (): kotlin.Nothing declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp0_notnull: kotlin.Nothing? [val] declared in <root>.test' type=kotlin.Nothing? origin=null
then: CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
<T>: kotlin.Nothing
x: CONST Null type=kotlin.Nothing? value=null
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: TYPE_OP type=kotlin.Double origin=IMPLICIT_CAST typeOperand=kotlin.Double
compiler/testData/ir/irText/expressions/kt30020.txt
Vendored
+30 -48
View File
@@ -51,57 +51,39 @@ FILE fqName:<root> fileName:/kt30020.kt
element: CONST Int type=kotlin.Int value=4
CALL 'public final fun plusAssign <T> (element: T of kotlin.collections.plusAssign): kotlin.Unit [inline] declared in kotlin.collections' type=kotlin.Unit origin=PLUSEQ
<T>: kotlin.Int
$receiver: BLOCK type=kotlin.collections.MutableList<kotlin.Any> origin=EXCLEXCL
VAR IR_TEMPORARY_VARIABLE name:tmp2_notnull type:kotlin.collections.MutableList<kotlin.Any>? [val]
BLOCK type=kotlin.collections.MutableList<kotlin.Any>? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp1_safe_receiver type:<root>.X? [val]
GET_VAR 'nx: <root>.X? declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any>? 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 tmp1_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? 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 abstract fun <get-xs> (): kotlin.collections.MutableList<kotlin.Any> declared in <root>.X' type=kotlin.collections.MutableList<kotlin.Any> origin=GET_PROPERTY
$this: GET_VAR 'val tmp1_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any> 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 tmp2_notnull: kotlin.collections.MutableList<kotlin.Any>? [val] declared in <root>.test' type=kotlin.collections.MutableList<kotlin.Any>? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CALL 'public final fun THROW_NPE (): kotlin.Nothing declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp2_notnull: kotlin.collections.MutableList<kotlin.Any>? [val] declared in <root>.test' type=kotlin.collections.MutableList<kotlin.Any>? origin=null
$receiver: CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=kotlin.collections.MutableList<kotlin.Any> origin=EXCLEXCL
<T>: kotlin.collections.MutableList<kotlin.Any>
x: BLOCK type=kotlin.collections.MutableList<kotlin.Any>? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp1_safe_receiver type:<root>.X? [val]
GET_VAR 'nx: <root>.X? declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any>? 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 tmp1_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? 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 abstract fun <get-xs> (): kotlin.collections.MutableList<kotlin.Any> declared in <root>.X' type=kotlin.collections.MutableList<kotlin.Any> origin=GET_PROPERTY
$this: GET_VAR 'val tmp1_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? origin=null
element: CONST Int type=kotlin.Int value=5
CALL 'public final fun plusAssign <T> (element: T of kotlin.collections.plusAssign): kotlin.Unit [inline] declared in kotlin.collections' type=kotlin.Unit origin=PLUSEQ
<T>: kotlin.Int
$receiver: BLOCK type=kotlin.collections.MutableList<kotlin.Any> origin=EXCLEXCL
VAR IR_TEMPORARY_VARIABLE name:tmp4_notnull type:kotlin.collections.MutableList<kotlin.Any>? [val]
BLOCK type=kotlin.collections.MutableList<kotlin.Any>? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp3_safe_receiver type:<root>.X? [val]
GET_VAR 'nx: <root>.X? declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any>? 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 tmp3_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? 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 abstract fun f (): kotlin.collections.MutableList<kotlin.Any> declared in <root>.X' type=kotlin.collections.MutableList<kotlin.Any> origin=null
$this: GET_VAR 'val tmp3_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any> 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 tmp4_notnull: kotlin.collections.MutableList<kotlin.Any>? [val] declared in <root>.test' type=kotlin.collections.MutableList<kotlin.Any>? origin=null
arg1: CONST Null type=kotlin.Nothing? value=null
then: CALL 'public final fun THROW_NPE (): kotlin.Nothing declared in kotlin.internal.ir' type=kotlin.Nothing origin=EXCLEXCL
BRANCH
if: CONST Boolean type=kotlin.Boolean value=true
then: GET_VAR 'val tmp4_notnull: kotlin.collections.MutableList<kotlin.Any>? [val] declared in <root>.test' type=kotlin.collections.MutableList<kotlin.Any>? origin=null
$receiver: CALL 'public final fun CHECK_NOT_NULL <T> (x: T of kotlin.internal.ir.CHECK_NOT_NULL?): T of kotlin.internal.ir.CHECK_NOT_NULL declared in kotlin.internal.ir' type=kotlin.collections.MutableList<kotlin.Any> origin=EXCLEXCL
<T>: kotlin.collections.MutableList<kotlin.Any>
x: BLOCK type=kotlin.collections.MutableList<kotlin.Any>? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp2_safe_receiver type:<root>.X? [val]
GET_VAR 'nx: <root>.X? declared in <root>.test' type=<root>.X? origin=null
WHEN type=kotlin.collections.MutableList<kotlin.Any>? 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 tmp2_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? 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 abstract fun f (): kotlin.collections.MutableList<kotlin.Any> declared in <root>.X' type=kotlin.collections.MutableList<kotlin.Any> origin=null
$this: GET_VAR 'val tmp2_safe_receiver: <root>.X? [val] declared in <root>.test' type=<root>.X? origin=null
element: CONST Int type=kotlin.Int value=6
FUN name:testExtensionReceiver visibility:public modality:FINAL <> ($receiver:kotlin.collections.MutableList<kotlin.Any>) returnType:kotlin.Unit
$receiver: VALUE_PARAMETER name:<this> type:kotlin.collections.MutableList<kotlin.Any>