[IR] Drop inlinePureArguments parameter from FunctionInlining

Replaced its usages with `alwaysCreateTemporaryVariablesForArguments`

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/IrInlineUtils.kt

@@ -127,6 +127,7 @@ fun IrInlinable.inline(target: IrDeclarationParent, arguments: List<IrValueDecla
         }
     }
 
+// `getAdditionalStatementsFromInlinedBlock` == `getNonDefaultAdditionalStatementsFromInlinedBlock` + `getDefaultAdditionalStatementsFromInlinedBlock`
 fun IrInlinedFunctionBlock.getAdditionalStatementsFromInlinedBlock(): List<IrStatement> {
     return this.statements
         .filterIsInstance<IrComposite>()
@@ -146,6 +147,7 @@ fun IrInlinedFunctionBlock.getDefaultAdditionalStatementsFromInlinedBlock(): Lis
         .singleOrNull { it.origin == INLINED_FUNCTION_DEFAULT_ARGUMENTS }?.statements ?: emptyList()
 }
 
+// `IrInlinedFunctionBlock`.statements == `getAdditionalStatementsFromInlinedBlock` + `getOriginalStatementsFromInlinedBlock`
 fun IrInlinedFunctionBlock.getOriginalStatementsFromInlinedBlock(): List<IrStatement> {
     return this.statements
         .filter { it !is IrComposite || !(it.origin == INLINED_FUNCTION_ARGUMENTS || it.origin == INLINED_FUNCTION_DEFAULT_ARGUMENTS) }

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/inline/FunctionInlining.kt

@@ -84,7 +84,6 @@ class FunctionInlining(
     private val innerClassesSupport: InnerClassesSupport? = null,
     private val insertAdditionalImplicitCasts: Boolean = false,
     private val alwaysCreateTemporaryVariablesForArguments: Boolean = false,
-    private val inlinePureArguments: Boolean = true,
     private val regenerateInlinedAnonymousObjects: Boolean = false,
     private val inlineArgumentsWithTheirOriginalTypeAndOffset: Boolean = false,
     private val allowExternalInlining: Boolean = false,
@@ -845,8 +844,7 @@ class FunctionInlining(
         }
 
         private fun ParameterToArgument.shouldBeSubstitutedViaTemporaryVariable(): Boolean =
-            !(isImmutableVariableLoad && parameter.index >= 0) &&
-                    !(argumentExpression.isPure(false, context = context) && inlinePureArguments)
+            !(isImmutableVariableLoad && parameter.index >= 0) && !argumentExpression.isPure(false, context = context)
 
         private fun createTemporaryVariable(
             parameter: IrValueParameter,
@@ -873,7 +871,7 @@ class FunctionInlining(
             )
 
             if (alwaysCreateTemporaryVariablesForArguments) {
-                variable.name = parameter.name
+                variable.name = Name.identifier(parameter.name.asStringStripSpecialMarkers())
             }
 
             return variable

compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/JvmLower.kt

@@ -305,7 +305,7 @@ internal val functionInliningPhase = makeIrModulePhase(
 
         FunctionInlining(
             context, JvmInlineFunctionResolver(), context.innerClassesSupport,
-            inlinePureArguments = false,
+            alwaysCreateTemporaryVariablesForArguments = true,
             regenerateInlinedAnonymousObjects = true,
             inlineArgumentsWithTheirOriginalTypeAndOffset = true
         )