Introduce a 'baseline' variant for the compiler.

Implemented as a stripped down version of the optimizing compiler,
not running any optimization.

Adjust code to still work with expectations in code generators.

bug: 111397239

Test: test.py --baseline
Change-Id: I4328283825f9a890616e7496ed4c1e77d6bcc5dd
diff --git a/test/685-shifts/expected.txt b/test/685-shifts/expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/685-shifts/expected.txt
diff --git a/test/685-shifts/info.txt b/test/685-shifts/info.txt
new file mode 100644
index 0000000..9cf3e6d
--- /dev/null
+++ b/test/685-shifts/info.txt
@@ -0,0 +1 @@
+Tests for the compiler when shift instructions have 0 or 1 as constant shifts.
diff --git a/test/685-shifts/smali/Test.smali b/test/685-shifts/smali/Test.smali
new file mode 100644
index 0000000..f8dfd6f
--- /dev/null
+++ b/test/685-shifts/smali/Test.smali
@@ -0,0 +1,58 @@
+# Copyright (C) 2018 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 LTest;
+.super Ljava/lang/Object;
+
+.method public static shlZero(J)J
+    .registers 6
+    const v2, 0x0
+    shl-long v0, p0, v2
+    return-wide v0
+.end method
+
+.method public static shrZero(J)J
+    .registers 6
+    const v2, 0x0
+    shr-long v0, p0, v2
+    return-wide v0
+.end method
+
+.method public static ushrZero(J)J
+    .registers 6
+    const v2, 0x0
+    ushr-long v0, p0, v2
+    return-wide v0
+.end method
+
+.method public static shlOne(J)J
+    .registers 6
+    const v2, 0x1
+    shl-long v0, p0, v2
+    return-wide v0
+.end method
+
+.method public static shrOne(J)J
+    .registers 6
+    const v2, 0x1
+    shr-long v0, p0, v2
+    return-wide v0
+.end method
+
+.method public static ushrOne(J)J
+    .registers 6
+    const v2, 0x1
+    ushr-long v0, p0, v2
+    return-wide v0
+.end method
diff --git a/test/685-shifts/src/Main.java b/test/685-shifts/src/Main.java
new file mode 100644
index 0000000..d186363
--- /dev/null
+++ b/test/685-shifts/src/Main.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+import java.lang.reflect.Method;
+
+public class Main {
+  static long smallLong = 42L;
+  static long smallLongShlOne = 84L;
+  static long smallLongShrOne = 21L;
+  static long smallLongUShrOne = 21L;
+  static long longLong = 123456789123456789L;
+  static long longLongShlOne = 246913578246913578L;
+  static long longLongShrOne = 61728394561728394L;
+  static long longLongUShrOne = 61728394561728394L;
+
+  static long negativeSmallLong = -42L;
+  static long negativeSmallLongShlOne = -84L;
+  static long negativeSmallLongShrOne = -21L;
+  static long negativeSmallLongUShrOne = 9223372036854775787L;
+  static long negativeLongLong = -123456789123456789L;
+  static long negativeLongLongShlOne = -246913578246913578L;
+  static long negativeLongLongShrOne = -61728394561728395L;
+  static long negativeLongLongUShrOne = 9161643642293047413L;
+
+  private static void assertEquals(long expected, long actual) {
+    if (expected != actual) {
+      throw new Error("Expected " + expected + ", got " + actual);
+    }
+  }
+
+  public static void main(String[] args) throws Exception {
+    Class<?> c = Class.forName("Test");
+    Method m = c.getMethod("shlZero", long.class);
+    assertEquals(smallLong, (Long)m.invoke(null, smallLong));
+    assertEquals(longLong, (Long)m.invoke(null, longLong));
+
+    m = c.getMethod("shrZero", long.class);
+    assertEquals(smallLong, (Long)m.invoke(null, smallLong));
+    assertEquals(longLong, (Long)m.invoke(null, longLong));
+
+    m = c.getMethod("ushrZero", long.class);
+    assertEquals(smallLong, (Long)m.invoke(null, smallLong));
+    assertEquals(longLong, (Long)m.invoke(null, longLong));
+
+    m = c.getMethod("shlOne", long.class);
+    assertEquals(smallLongShlOne, (Long)m.invoke(null, smallLong));
+    assertEquals(longLongShlOne, (Long)m.invoke(null, longLong));
+
+    m = c.getMethod("shrOne", long.class);
+    assertEquals(smallLongShrOne, (Long)m.invoke(null, smallLong));
+    assertEquals(longLongShrOne, (Long)m.invoke(null, longLong));
+
+    m = c.getMethod("ushrOne", long.class);
+    assertEquals(smallLongUShrOne, (Long)m.invoke(null, smallLong));
+    assertEquals(longLongUShrOne, (Long)m.invoke(null, longLong));
+
+    // Test with negative numbers.
+
+    m = c.getMethod("shlZero", long.class);
+    assertEquals(negativeSmallLong, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLong, (Long)m.invoke(null, negativeLongLong));
+
+    m = c.getMethod("shrZero", long.class);
+    assertEquals(negativeSmallLong, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLong, (Long)m.invoke(null, negativeLongLong));
+
+    m = c.getMethod("ushrZero", long.class);
+    assertEquals(negativeSmallLong, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLong, (Long)m.invoke(null, negativeLongLong));
+
+    m = c.getMethod("shlOne", long.class);
+    assertEquals(negativeSmallLongShlOne, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLongShlOne, (Long)m.invoke(null, negativeLongLong));
+
+    m = c.getMethod("shrOne", long.class);
+    assertEquals(negativeSmallLongShrOne, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLongShrOne, (Long)m.invoke(null, negativeLongLong));
+
+    m = c.getMethod("ushrOne", long.class);
+    assertEquals(negativeSmallLongUShrOne, (Long)m.invoke(null, negativeSmallLong));
+    assertEquals(negativeLongLongUShrOne, (Long)m.invoke(null, negativeLongLong));
+  }
+}
diff --git a/test/etc/run-test-jar b/test/etc/run-test-jar
index e9ed051..acd37e4 100755
--- a/test/etc/run-test-jar
+++ b/test/etc/run-test-jar
@@ -265,6 +265,9 @@
     elif [ "x$1" = "x--jit" ]; then
         JIT="y"
         shift
+    elif [ "x$1" = "x--baseline" ]; then
+        FLAGS="${FLAGS} -Xcompiler-option --baseline"
+        shift
     elif [ "x$1" = "x--jvm" ]; then
         USE_JVM="y"
         shift
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 002ad07..e27a4d6 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -946,6 +946,7 @@
           "676-proxy-jit-at-first-use",
           "676-resolve-field-type",
           "685-deoptimizeable",
+          "685-shifts",
           "706-checker-scheduler",
           "707-checker-invalid-profile",
           "714-invoke-custom-lambda-metafactory",
@@ -1093,5 +1094,10 @@
         "env_vars": {"SANITIZE_HOST": "address"},
         "bug": "b/112993554",
         "description": ["Timeout with ASan and interp-ac on 32-bit host (x86)."]
+    },
+    {
+        "tests": ["454-get-vreg", "457-regs"],
+        "variant": "baseline",
+        "description": ["Tests are expected to fail with baseline."]
     }
 ]
diff --git a/test/run-test b/test/run-test
index 6a36055..2517450 100755
--- a/test/run-test
+++ b/test/run-test
@@ -160,9 +160,8 @@
 android_root="/system"
 bisection_search="no"
 suspend_timeout="500000"
-# By default we will use optimizing.
-image_args=""
 image_suffix=""
+run_optimizing="false"
 
 while true; do
     if [ "x$1" = "x--host" ]; then
@@ -186,7 +185,6 @@
         target_mode="no"
         DEX_LOCATION="$tmp_dir"
         runtime="jvm"
-        image_args=""
         prebuild_mode="no"
         NEED_DEX="false"
         run_args="${run_args} --jvm"
@@ -316,17 +314,20 @@
         image_suffix="-interpreter"
         shift
     elif [ "x$1" = "x--jit" ]; then
-        image_args="--jit"
+        run_args="${run_args} --jit"
         image_suffix="-interpreter"
         shift
+    elif [ "x$1" = "x--baseline" ]; then
+        run_args="${run_args} --baseline"
+        shift
     elif [ "x$1" = "x--optimizing" ]; then
-        image_args="-Xcompiler-option --compiler-backend=Optimizing"
+        run_optimizing="true"
         shift
     elif [ "x$1" = "x--no-verify" ]; then
         run_args="${run_args} --no-verify"
         shift
     elif [ "x$1" = "x--verify-soft-fail" ]; then
-        image_args="--verify-soft-fail"
+        run_args="${run_args} --verify-soft-fail"
         image_suffix="-interp-ac"
         shift
     elif [ "x$1" = "x--no-optimize" ]; then
@@ -448,7 +449,6 @@
 # The DEX_LOCATION with the chroot prefix, if any.
 chroot_dex_location="$chroot$DEX_LOCATION"
 
-run_args="${run_args} ${image_args}"
 # Allocate file descriptor real_stderr and redirect it to the shell's error
 # output (fd 2).
 if [ ${BASH_VERSINFO[1]} -ge 4 ] && [ ${BASH_VERSINFO[2]} -ge 1 ]; then
@@ -797,7 +797,7 @@
 # Tests named '<number>-checker-*' will also have their CFGs verified with
 # Checker when compiled with Optimizing on host.
 if [[ "$TEST_NAME" =~ ^[0-9]+-checker- ]]; then
-  if [ "$runtime" = "art" -a "$image_suffix" = "" ]; then
+  if [ "$runtime" = "art" -a "$image_suffix" = "" -a "$run_optimizing" = "true" ]; then
     # In no-prebuild or no-image mode, the compiler only quickens so disable the checker.
     if [ "$prebuild_mode" = "yes" -a "$have_image" = "yes" ]; then
       run_checker="yes"
@@ -820,7 +820,7 @@
   fi
 fi
 
-  run_args="${run_args} --testlib ${testlib}"
+run_args="${run_args} --testlib ${testlib}"
 
 # To cause tests to fail fast, limit the file sizes created by dx, dex2oat and
 # ART output to approximately 128MB. This should be more than sufficient
diff --git a/test/testrunner/testrunner.py b/test/testrunner/testrunner.py
index c5059f6..4d3b3b1 100755
--- a/test/testrunner/testrunner.py
+++ b/test/testrunner/testrunner.py
@@ -154,7 +154,7 @@
   VARIANT_TYPE_DICT['jvmti'] = {'no-jvmti', 'jvmti-stress', 'redefine-stress', 'trace-stress',
                                 'field-stress', 'step-stress'}
   VARIANT_TYPE_DICT['compiler'] = {'interp-ac', 'interpreter', 'jit', 'jit-on-first-use',
-                                   'optimizing', 'regalloc_gc', 'speed-profile'}
+                                   'optimizing', 'regalloc_gc', 'speed-profile', 'baseline'}
 
   for v_type in VARIANT_TYPE_DICT:
     TOTAL_VARIANTS_SET = TOTAL_VARIANTS_SET.union(VARIANT_TYPE_DICT.get(v_type))
@@ -437,6 +437,8 @@
         options_test += ' --jit --runtime-option -Xjitthreshold:0'
       elif compiler == 'speed-profile':
         options_test += ' --random-profile'
+      elif compiler == 'baseline':
+        options_test += ' --baseline'
 
       if relocate == 'relocate':
         options_test += ' --relocate'