| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| public class Main { |
| |
| /* |
| * Ensure an inlined static invoke explicitly triggers the |
| * initialization check of the called method's declaring class, and |
| * that the corresponding load class instruction does not get |
| * removed before register allocation & code generation. |
| */ |
| |
| /// CHECK-START: void Main.invokeStaticInlined() builder (after) |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:false |
| /// CHECK-DAG: <<ClinitCheck:l\d+>> ClinitCheck [<<LoadClass>>] |
| /// CHECK-DAG: InvokeStaticOrDirect [<<ClinitCheck>>] |
| |
| /// CHECK-START: void Main.invokeStaticInlined() inliner (after) |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:false |
| /// CHECK-DAG: <<ClinitCheck:l\d+>> ClinitCheck [<<LoadClass>>] |
| |
| /// CHECK-START: void Main.invokeStaticInlined() inliner (after) |
| /// CHECK-NOT: InvokeStaticOrDirect |
| |
| // The following checks ensure the clinit check instruction added by |
| // the builder is pruned by the PrepareForRegisterAllocation, while |
| // the load class instruction is preserved. As the control flow |
| // graph is not dumped after (nor before) this step, we check the |
| // CFG as it is before the next pass (liveness analysis) instead. |
| |
| /// CHECK-START: void Main.invokeStaticInlined() liveness (before) |
| /// CHECK-DAG: LoadClass gen_clinit_check:true |
| |
| /// CHECK-START: void Main.invokeStaticInlined() liveness (before) |
| /// CHECK-NOT: ClinitCheck |
| /// CHECK-NOT: InvokeStaticOrDirect |
| |
| static void invokeStaticInlined() { |
| ClassWithClinit1.$opt$inline$StaticMethod(); |
| } |
| |
| static class ClassWithClinit1 { |
| static { |
| System.out.println("Main$ClassWithClinit1's static initializer"); |
| } |
| |
| static void $opt$inline$StaticMethod() { |
| } |
| } |
| |
| /* |
| * Ensure a non-inlined static invoke eventually has an implicit |
| * initialization check of the called method's declaring class. |
| */ |
| |
| /// CHECK-START: void Main.invokeStaticNotInlined() builder (after) |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:false |
| /// CHECK-DAG: <<ClinitCheck:l\d+>> ClinitCheck [<<LoadClass>>] |
| /// CHECK-DAG: InvokeStaticOrDirect [<<ClinitCheck>>] |
| |
| /// CHECK-START: void Main.invokeStaticNotInlined() inliner (after) |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:false |
| /// CHECK-DAG: <<ClinitCheck:l\d+>> ClinitCheck [<<LoadClass>>] |
| /// CHECK-DAG: InvokeStaticOrDirect [<<ClinitCheck>>] |
| |
| // The following checks ensure the clinit check and load class |
| // instructions added by the builder are pruned by the |
| // PrepareForRegisterAllocation. As the control flow graph is not |
| // dumped after (nor before) this step, we check the CFG as it is |
| // before the next pass (liveness analysis) instead. |
| |
| /// CHECK-START: void Main.invokeStaticNotInlined() liveness (before) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main.invokeStaticNotInlined() liveness (before) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| static void invokeStaticNotInlined() { |
| ClassWithClinit2.staticMethod(); |
| } |
| |
| static class ClassWithClinit2 { |
| static { |
| System.out.println("Main$ClassWithClinit2's static initializer"); |
| } |
| |
| static boolean doThrow = false; |
| |
| static void staticMethod() { |
| if (doThrow) { |
| // Try defeating inlining. |
| throw new Error(); |
| } |
| } |
| } |
| |
| /* |
| * Ensure an inlined call to a static method whose declaring class |
| * is statically known to have been initialized does not require an |
| * explicit clinit check. |
| */ |
| |
| /// CHECK-START: void Main$ClassWithClinit3.invokeStaticInlined() builder (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$ClassWithClinit3.invokeStaticInlined() builder (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| /// CHECK-START: void Main$ClassWithClinit3.invokeStaticInlined() inliner (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| /// CHECK-NOT: InvokeStaticOrDirect |
| |
| static class ClassWithClinit3 { |
| static void invokeStaticInlined() { |
| // The invocation of invokeStaticInlined triggers the |
| // initialization of ClassWithClinit3, meaning that the |
| // hereinbelow call to $opt$inline$StaticMethod does not need a |
| // clinit check. |
| $opt$inline$StaticMethod(); |
| } |
| |
| static { |
| System.out.println("Main$ClassWithClinit3's static initializer"); |
| } |
| |
| static void $opt$inline$StaticMethod() { |
| } |
| } |
| |
| /* |
| * Ensure an non-inlined call to a static method whose declaring |
| * class is statically known to have been initialized does not |
| * require an explicit clinit check. |
| */ |
| |
| /// CHECK-START: void Main$ClassWithClinit4.invokeStaticNotInlined() builder (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$ClassWithClinit4.invokeStaticNotInlined() builder (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| /// CHECK-START: void Main$ClassWithClinit4.invokeStaticNotInlined() inliner (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$ClassWithClinit4.invokeStaticNotInlined() inliner (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| static class ClassWithClinit4 { |
| static void invokeStaticNotInlined() { |
| // The invocation of invokeStaticNotInlined triggers the |
| // initialization of ClassWithClinit4, meaning that the |
| // call to staticMethod below does not need a clinit |
| // check. |
| staticMethod(); |
| } |
| |
| static { |
| System.out.println("Main$ClassWithClinit4's static initializer"); |
| } |
| |
| static boolean doThrow = false; |
| |
| static void staticMethod() { |
| if (doThrow) { |
| // Try defeating inlining. |
| throw new Error(); |
| } |
| } |
| } |
| |
| /* |
| * Ensure an inlined call to a static method whose declaring class |
| * is a super class of the caller's class does not require an |
| * explicit clinit check. |
| */ |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit5.invokeStaticInlined() builder (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit5.invokeStaticInlined() builder (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit5.invokeStaticInlined() inliner (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| /// CHECK-NOT: InvokeStaticOrDirect |
| |
| static class ClassWithClinit5 { |
| static void $opt$inline$StaticMethod() { |
| } |
| |
| static { |
| System.out.println("Main$ClassWithClinit5's static initializer"); |
| } |
| } |
| |
| static class SubClassOfClassWithClinit5 extends ClassWithClinit5 { |
| static void invokeStaticInlined() { |
| ClassWithClinit5.$opt$inline$StaticMethod(); |
| } |
| } |
| |
| /* |
| * Ensure an non-inlined call to a static method whose declaring |
| * class is a super class of the caller's class does not require an |
| * explicit clinit check. |
| */ |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit6.invokeStaticNotInlined() builder (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit6.invokeStaticNotInlined() builder (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit6.invokeStaticNotInlined() inliner (after) |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main$SubClassOfClassWithClinit6.invokeStaticNotInlined() inliner (after) |
| /// CHECK-NOT: LoadClass |
| /// CHECK-NOT: ClinitCheck |
| |
| static class ClassWithClinit6 { |
| static boolean doThrow = false; |
| |
| static void staticMethod() { |
| if (doThrow) { |
| // Try defeating inlining. |
| throw new Error(); |
| } |
| } |
| |
| static { |
| System.out.println("Main$ClassWithClinit6's static initializer"); |
| } |
| } |
| |
| static class SubClassOfClassWithClinit6 extends ClassWithClinit6 { |
| static void invokeStaticNotInlined() { |
| ClassWithClinit6.staticMethod(); |
| } |
| } |
| |
| |
| /* |
| * Verify that if we have a static call immediately after the load class |
| * we don't do generate a clinit check. |
| */ |
| |
| /// CHECK-START: void Main.noClinitBecauseOfInvokeStatic() liveness (before) |
| /// CHECK-DAG: <<IntConstant:i\d+>> IntConstant 0 |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:false |
| /// CHECK-DAG: InvokeStaticOrDirect |
| /// CHECK-DAG: StaticFieldSet [<<LoadClass>>,<<IntConstant>>] |
| |
| /// CHECK-START: void Main.noClinitBecauseOfInvokeStatic() liveness (before) |
| /// CHECK-NOT: ClinitCheck |
| |
| static void noClinitBecauseOfInvokeStatic() { |
| ClassWithClinit2.staticMethod(); |
| ClassWithClinit2.doThrow = false; |
| } |
| |
| /* |
| * Verify that if the static call is after a field access, the load class |
| * will generate a clinit check. |
| */ |
| |
| /// CHECK-START: void Main.clinitBecauseOfFieldAccess() liveness (before) |
| /// CHECK-DAG: <<IntConstant:i\d+>> IntConstant 0 |
| /// CHECK-DAG: <<LoadClass:l\d+>> LoadClass gen_clinit_check:true |
| /// CHECK-DAG: StaticFieldSet [<<LoadClass>>,<<IntConstant>>] |
| /// CHECK-DAG: InvokeStaticOrDirect |
| |
| /// CHECK-START: void Main.clinitBecauseOfFieldAccess() liveness (before) |
| /// CHECK-NOT: ClinitCheck |
| static void clinitBecauseOfFieldAccess() { |
| ClassWithClinit2.doThrow = false; |
| ClassWithClinit2.staticMethod(); |
| } |
| |
| // TODO: Add a test for the case of a static method whose declaring |
| // class type index is not available (i.e. when `storage_index` |
| // equals `DexFile::kDexNoIndex` in |
| // art::HGraphBuilder::BuildInvoke). |
| |
| public static void main(String[] args) { |
| invokeStaticInlined(); |
| invokeStaticNotInlined(); |
| ClassWithClinit3.invokeStaticInlined(); |
| ClassWithClinit4.invokeStaticNotInlined(); |
| SubClassOfClassWithClinit5.invokeStaticInlined(); |
| SubClassOfClassWithClinit6.invokeStaticNotInlined(); |
| } |
| } |
