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[FIR] Capture array and indices for postfix/prefix increment/decrement

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of array element (including overloaded indexed access operators, e.g.,
`a[b, c]++`).

This prevents double-evaluation of the array and indices expressions,
which may have side-effects.
This commit is contained in:
Mark Punzalan
2020-09-30 07:14:46 +00:00
committed by teamcityserver
parent eb631bc429
commit a2a4d94834
22 changed files with 441 additions and 160 deletions
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compiler/testData/ir/irText/expressions/safeCallWithIncrementDecrement.fir.txt
Vendored
+16 -24
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@@ -96,38 +96,30 @@ FILE fqName:test fileName:/safeCallWithIncrementDecrement.kt
FUN name:testArrayAccess visibility:public modality:FINAL <> (nc:test.C?) returnType:kotlin.Unit
VALUE_PARAMETER name:nc index:0 type:test.C?
BLOCK_BODY
VAR IR_TEMPORARY_VARIABLE name:tmp_4 type:kotlin.Int [val]
CALL 'public final fun get (index: kotlin.Int): kotlin.Int [operator] declared in test' type=kotlin.Int origin=null
$receiver: BLOCK type=kotlin.Int? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp_5 type:test.C? [val]
GET_VAR 'nc: test.C? declared in test.testArrayAccess' type=test.C? 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 tmp_5: test.C? [val] declared in test.testArrayAccess' type=test.C? 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 final fun <get-p> (): kotlin.Int declared in test' type=kotlin.Int origin=GET_PROPERTY
$receiver: GET_VAR 'val tmp_5: test.C? [val] declared in test.testArrayAccess' type=test.C? origin=null
index: CONST Int type=kotlin.Int value=0
CALL 'public final fun set (index: kotlin.Int, value: kotlin.Int): kotlin.Unit [operator] declared in test' type=kotlin.Unit origin=null
$receiver: BLOCK type=kotlin.Int? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp_6 type:test.C? [val]
VAR IR_TEMPORARY_VARIABLE name:tmp_4 type:kotlin.Int? [val]
BLOCK type=kotlin.Int? origin=SAFE_CALL
VAR IR_TEMPORARY_VARIABLE name:tmp_5 type:test.C? [val]
GET_VAR 'nc: test.C? declared in test.testArrayAccess' type=test.C? 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 tmp_6: test.C? [val] declared in test.testArrayAccess' type=test.C? origin=null
arg0: GET_VAR 'val tmp_5: test.C? [val] declared in test.testArrayAccess' type=test.C? 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 final fun <get-p> (): kotlin.Int declared in test' type=kotlin.Int origin=GET_PROPERTY
$receiver: GET_VAR 'val tmp_6: test.C? [val] declared in test.testArrayAccess' type=test.C? origin=null
index: CONST Int type=kotlin.Int value=0
$receiver: GET_VAR 'val tmp_5: test.C? [val] declared in test.testArrayAccess' type=test.C? origin=null
VAR IR_TEMPORARY_VARIABLE name:tmp_6 type:kotlin.Int [val]
CONST Int type=kotlin.Int value=0
VAR IR_TEMPORARY_VARIABLE name:tmp_7 type:kotlin.Int [val]
CALL 'public final fun get (index: kotlin.Int): kotlin.Int [operator] declared in test' type=kotlin.Int origin=null
$receiver: GET_VAR 'val tmp_4: kotlin.Int? [val] declared in test.testArrayAccess' type=kotlin.Int? origin=null
index: GET_VAR 'val tmp_6: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null
CALL 'public final fun set (index: kotlin.Int, value: kotlin.Int): kotlin.Unit [operator] declared in test' type=kotlin.Unit origin=null
$receiver: GET_VAR 'val tmp_4: kotlin.Int? [val] declared in test.testArrayAccess' type=kotlin.Int? origin=null
index: GET_VAR 'val tmp_6: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null
value: CALL 'public final fun inc (): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
$this: GET_VAR 'val tmp_4: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null
$this: GET_VAR 'val tmp_7: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null
TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
GET_VAR 'val tmp_4: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null
GET_VAR 'val tmp_7: kotlin.Int [val] declared in test.testArrayAccess' type=kotlin.Int origin=null