Revert "Revert "Implement on-stack replacement for arm/arm64/x86/x86_64.""
This reverts commit bd89a5c556324062b7d841843b039392e84cfaf4.
Change-Id: I08d190431520baa7fcec8fbdb444519f25ac8d44
diff --git a/test/570-checker-osr/expected.txt b/test/570-checker-osr/expected.txt
new file mode 100644
index 0000000..555c6a9
--- /dev/null
+++ b/test/570-checker-osr/expected.txt
@@ -0,0 +1,5 @@
+JNI_OnLoad called
+100000000
+200000000
+300000000
+400000000
diff --git a/test/570-checker-osr/info.txt b/test/570-checker-osr/info.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/570-checker-osr/info.txt
diff --git a/test/570-checker-osr/osr.cc b/test/570-checker-osr/osr.cc
new file mode 100644
index 0000000..fb84687
--- /dev/null
+++ b/test/570-checker-osr/osr.cc
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include "art_method.h"
+#include "jit/jit.h"
+#include "jit/jit_code_cache.h"
+#include "oat_quick_method_header.h"
+#include "scoped_thread_state_change.h"
+#include "stack_map.h"
+
+namespace art {
+
+class OsrVisitor : public StackVisitor {
+ public:
+ explicit OsrVisitor(Thread* thread)
+ SHARED_REQUIRES(Locks::mutator_lock_)
+ : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames),
+ in_osr_method_(false) {}
+
+ bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) {
+ ArtMethod* m = GetMethod();
+ std::string m_name(m->GetName());
+
+ if ((m_name.compare("$noinline$returnInt") == 0) ||
+ (m_name.compare("$noinline$returnFloat") == 0) ||
+ (m_name.compare("$noinline$returnDouble") == 0) ||
+ (m_name.compare("$noinline$returnLong") == 0) ||
+ (m_name.compare("$noinline$deopt") == 0)) {
+ const OatQuickMethodHeader* header =
+ Runtime::Current()->GetJit()->GetCodeCache()->LookupOsrMethodHeader(m);
+ if (header != nullptr && header == GetCurrentOatQuickMethodHeader()) {
+ in_osr_method_ = true;
+ }
+ return false;
+ }
+ return true;
+ }
+
+ bool in_osr_method_;
+};
+
+extern "C" JNIEXPORT jboolean JNICALL Java_Main_ensureInOsrCode(JNIEnv*, jclass) {
+ jit::Jit* jit = Runtime::Current()->GetJit();
+ if (jit == nullptr) {
+ // Just return true for non-jit configurations to stop the infinite loop.
+ return JNI_TRUE;
+ }
+ ScopedObjectAccess soa(Thread::Current());
+ OsrVisitor visitor(soa.Self());
+ visitor.WalkStack();
+ return visitor.in_osr_method_;
+}
+
+} // namespace art
diff --git a/test/570-checker-osr/smali/Osr.smali b/test/570-checker-osr/smali/Osr.smali
new file mode 100644
index 0000000..869c7c3
--- /dev/null
+++ b/test/570-checker-osr/smali/Osr.smali
@@ -0,0 +1,35 @@
+# Copyright (C) 2016 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.
+
+.class public LOsr;
+
+.super Ljava/lang/Object;
+
+# Check that blocks only havig nops are not merged when they are loop headers.
+# This ensures we can do on-stack replacement for branches to those nop blocks.
+
+## CHECK-START: int Osr.simpleLoop(int, int) dead_code_elimination_final (after)
+## CHECK-DAG: SuspendCheck loop:<<OuterLoop:B\d+>> outer_loop:none
+## CHECK-DAG: SuspendCheck loop:{{B\d+}} outer_loop:<<OuterLoop>>
+.method public static simpleLoop(II)I
+ .registers 3
+ const/16 v0, 0
+ :nop_entry
+ nop
+ :loop_entry
+ add-int v0, v0, v0
+ if-eq v0, v1, :loop_entry
+ if-eq v0, v2, :nop_entry
+ return v0
+.end method
diff --git a/test/570-checker-osr/src/DeoptimizationController.java b/test/570-checker-osr/src/DeoptimizationController.java
new file mode 100644
index 0000000..907d133
--- /dev/null
+++ b/test/570-checker-osr/src/DeoptimizationController.java
@@ -0,0 +1,104 @@
+/*
+ * 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.
+ */
+
+// This file is a copy of 802-deoptimization/src/DeoptimizationController.java
+// because run-test requires standalone individual test.
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+
+/**
+ * Controls deoptimization using dalvik.system.VMDebug class.
+ */
+public class DeoptimizationController {
+ private static final String TEMP_FILE_NAME_PREFIX = "test";
+ private static final String TEMP_FILE_NAME_SUFFIX = ".trace";
+
+ private static File createTempFile() throws Exception {
+ try {
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ } catch (IOException e) {
+ System.setProperty("java.io.tmpdir", "/data/local/tmp");
+ try {
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ } catch (IOException e2) {
+ System.setProperty("java.io.tmpdir", "/sdcard");
+ return File.createTempFile(TEMP_FILE_NAME_PREFIX, TEMP_FILE_NAME_SUFFIX);
+ }
+ }
+ }
+
+ public static void startDeoptimization() {
+ File tempFile = null;
+ try {
+ tempFile = createTempFile();
+ String tempFileName = tempFile.getPath();
+
+ VMDebug.startMethodTracing(tempFileName, 0, 0, false, 1000);
+ if (VMDebug.getMethodTracingMode() == 0) {
+ throw new IllegalStateException("Not tracing.");
+ }
+ } catch (Exception exc) {
+ exc.printStackTrace(System.err);
+ } finally {
+ if (tempFile != null) {
+ tempFile.delete();
+ }
+ }
+ }
+
+ public static void stopDeoptimization() {
+ try {
+ VMDebug.stopMethodTracing();
+ if (VMDebug.getMethodTracingMode() != 0) {
+ throw new IllegalStateException("Still tracing.");
+ }
+ } catch (Exception exc) {
+ exc.printStackTrace(System.err);
+ }
+ }
+
+ private static class VMDebug {
+ private static final Method startMethodTracingMethod;
+ private static final Method stopMethodTracingMethod;
+ private static final Method getMethodTracingModeMethod;
+
+ static {
+ try {
+ Class<?> c = Class.forName("dalvik.system.VMDebug");
+ startMethodTracingMethod = c.getDeclaredMethod("startMethodTracing", String.class,
+ Integer.TYPE, Integer.TYPE, Boolean.TYPE, Integer.TYPE);
+ stopMethodTracingMethod = c.getDeclaredMethod("stopMethodTracing");
+ getMethodTracingModeMethod = c.getDeclaredMethod("getMethodTracingMode");
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static void startMethodTracing(String filename, int bufferSize, int flags,
+ boolean samplingEnabled, int intervalUs) throws Exception {
+ startMethodTracingMethod.invoke(null, filename, bufferSize, flags, samplingEnabled,
+ intervalUs);
+ }
+ public static void stopMethodTracing() throws Exception {
+ stopMethodTracingMethod.invoke(null);
+ }
+ public static int getMethodTracingMode() throws Exception {
+ return (int) getMethodTracingModeMethod.invoke(null);
+ }
+ }
+}
diff --git a/test/570-checker-osr/src/Main.java b/test/570-checker-osr/src/Main.java
new file mode 100644
index 0000000..7485163
--- /dev/null
+++ b/test/570-checker-osr/src/Main.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2016 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 {
+ public static void main(String[] args) {
+ System.loadLibrary(args[0]);
+ if ($noinline$returnInt() != 53) {
+ throw new Error("Unexpected return value");
+ }
+ if ($noinline$returnFloat() != 42.2f) {
+ throw new Error("Unexpected return value");
+ }
+ if ($noinline$returnDouble() != Double.longBitsToDouble(0xF000000000001111L)) {
+ throw new Error("Unexpected return value ");
+ }
+ if ($noinline$returnLong() != 0xFFFF000000001111L) {
+ throw new Error("Unexpected return value");
+ }
+
+ try {
+ $noinline$deopt();
+ } catch (Exception e) {}
+ }
+
+ public static int $noinline$returnInt() {
+ if (doThrow) throw new Error("");
+ int i = 0;
+ for (; i < 100000000; ++i) {
+ }
+ while (!ensureInOsrCode()) {}
+ System.out.println(i);
+ return 53;
+ }
+
+ public static float $noinline$returnFloat() {
+ if (doThrow) throw new Error("");
+ int i = 0;
+ for (; i < 200000000; ++i) {
+ }
+ while (!ensureInOsrCode()) {}
+ System.out.println(i);
+ return 42.2f;
+ }
+
+ public static double $noinline$returnDouble() {
+ if (doThrow) throw new Error("");
+ int i = 0;
+ for (; i < 300000000; ++i) {
+ }
+ while (!ensureInOsrCode()) {}
+ System.out.println(i);
+ return Double.longBitsToDouble(0xF000000000001111L);
+ }
+
+ public static long $noinline$returnLong() {
+ if (doThrow) throw new Error("");
+ int i = 1000000;
+ for (; i < 400000000; ++i) {
+ }
+ while (!ensureInOsrCode()) {}
+ System.out.println(i);
+ return 0xFFFF000000001111L;
+ }
+
+ public static void $noinline$deopt() {
+ if (doThrow) throw new Error("");
+ int i = 0;
+ for (; i < 100000000; ++i) {
+ }
+ while (!ensureInOsrCode()) {}
+ DeoptimizationController.startDeoptimization();
+ }
+
+ public static int[] array = new int[4];
+
+ public static native boolean ensureInOsrCode();
+
+ public static boolean doThrow = false;
+}