Reverts r8373 "Renamed the 'dartc' launch script to 'dart_analysis'"

compiler/scripts/compiler_compare.sh

Index: compiler/scripts/compiler_compare.sh
diff --git a/compiler/scripts/compiler_compare.sh b/compiler/scripts/compiler_compare.sh
new file mode 100755
index 0000000000000000000000000000000000000000..911590e31cbc0e84d19b4dd0a6f61bd9c4ff9e1f
--- /dev/null
+++ b/compiler/scripts/compiler_compare.sh
@@ -0,0 +1,191 @@
+#!/bin/bash
+#
+# Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+# Compare the current working copy of the repository to either a clean copy
+# or the specified revision.
+# Along with the files created by compiler_metrics.sh, creates
+# compiler_compare[_stats_[12]].log in the working direcetory and a
+# out_compile_samples/ directory at the root of the repository,
+# which are left around for later examination.
+# These files will be destroyed on script re-run.
+
+APP=""
+REV=""
+ONE_DELTA=""
+BASE_PATH=$(pwd)
+SCRIPT_PATH=$(dirname $0)
+SCRIPT_PATH=$(cd $SCRIPT_PATH; pwd)
+RUNS=10
+
+function printHelp() {
+  exitValue=${1:1}
+  echo "Compare current changes as they relate to performance with another SVN revision"
+  echo ""
+  echo "  Usage:"
+  echo "  -a=, --app=         The dart app file to test (required)."
+  echo "  -d=, --one-delta=   The filename, relative to app, to touch in order to trigger a one-delta compile."
+  echo "  -r=, --revision=    The compiler revision to compare against (default to current repository revision)."
+  echo "  --runs=             Number of runs to test with, default $RUNS"
+  echo "  --stats             Non-destructive display of previous stats"
+  echo "  -h, --help          What you see is what you get."
+  exit $exitValue
+}
+
+function failTest() {
+  if [ ! $1 -eq 0 ]; then
+    echo $2
+    exit $1
+  fi
+}
+
+if [ $# -eq 0 ]; then
+  printHelp;
+fi
+
+for i in $*
+do
+  case $i in
+    --one-delta=*|-d=*)
+      ONE_DELTA=${i#*=}
+      COMPARE_OPTIONS+="--one-delta=$ONE_DELTA ";;
+    --app=*|-a=*)
+      APP=${i#*=}
+      APP=$( cd "$( dirname "$APP" )" && pwd )/$( basename "$APP");;
+    --revision=*|-r=*)
+      REV=${i#*=};;
+    --help|-h)
+      printHelp 0;;
+    --runs=*)
+      RUNS=${i#*=};;
+    --stats)
+      calcStats
+      exit 0;;
+    *)
+      echo "Invalid parameter: $i"
+      printhelp 1;;
+  esac
+done
+
+COMPARE_OPTIONS+="-r=$RUNS "
+
+if [ "" = "$APP" ] || [ ! -r $APP ]; then
+  echo "Required --app"
+  printHelp
+fi
+
+RESPONSE[0]="Performance: Better"
+RESPONSE[1]="Performance: No Change"
+RESPONSE[2]="Performance: Worse"
+
+# Passed: MAX deviation, Changed Amount
+# Returns: Index of RESPONSE
+function responseValue() {
+  ABS=$2
+  (( ABS = ABS < 0 ? ABS * -1 : ABS ))
+  if [ $ABS -gt $1 ]; then
+    if [ $2 -lt 0 ]; then
+      return 2
+    else
+      return 0
+    fi
+  fi
+  return 1
+}
+
+function calcStat() {
+  # Assume we're always making improvments, S2 will be presented as a larger value
+  LINEMATCH_DEV="s/${1}: .*stdev: \([0-9]*\).*/\1/p"
+  LINEMATCH_VALUE="s/${1}: average: \([0-9]*\).*/\1/p"
+  S1_DEV=$(sed -n -e "$LINEMATCH_DEV" $STAT1)
+  if [ "" != "$S1_DEV" ]; then
+    S2_DEV=$(sed -n -e "$LINEMATCH_DEV" $STAT2)
+    DEV_MAX=$(( S1_DEV < S2_DEV ? S2_DEV : S1_DEV ))
+    S1_VALUE=$(sed -n -e "$LINEMATCH_VALUE" $STAT1)
+    S2_VALUE=$(sed -n -e "$LINEMATCH_VALUE" $STAT2)
+    DIFF=$(( S2_VALUE - S1_VALUE ))
+    DIFF_PERCENT=`echo "$DIFF*100/$S2_VALUE" | bc -l | sed 's/\([0-9]*\.[0-9][0-9]\)[0-9]*/\1/'`
+    responseValue $DEV_MAX $DIFF
+    echo "$1: Before/After-ms(${S2_VALUE} / ${S1_VALUE}), stdev(${S2_DEV} / ${S1_DEV}), Difference: ${DIFF}ms (${DIFF_PERCENT}%), " ${RESPONSE[$?]}
+  fi
+  return 0
+}
+
+function calcStats() {
+  calcStat full-compile
+  calcStat zero-delta-compile
+  calcStat one-delta-compile
+}
+
+ROOT_OF_REPO=$BASE_PATH
+TEST_DIR=$BASE_PATH
+while true; do
+  ls -d .gclient > /dev/null 2>&1
+  if [ $? -eq 0 ]; then
+    echo "Root found: $ROOT_OF_REPO"
+    break;
+  fi
+  if [ "$TEST_DIR" = "/" ]; then
+    failTest 1 "Hit the root directory; no .git/ found?!"
+  fi
+  ROOT_OF_REPO=$TEST_DIR
+  cd ..
+  TEST_DIR=$(pwd)
+done
+
+# Make a temporary directory in the current path and checkout the revision
+TMP_DIR=$ROOT_OF_REPO/compiler/tmp_performance_comparisons
+mkdir -p $TMP_DIR
+
+LOG_FILE=$TMP_DIR/compiler_compare.log
+STAT1=$TMP_DIR/compiler_compare_stats_1.log
+STAT2=$TMP_DIR/compiler_compare_stats_2.log
+COMPARE_OPTIONS+="--output=$TMP_DIR "
+
+# zero out files
+echo "" > $LOG_FILE
+echo "" > $STAT1
+echo "" > $STAT2
+
+# Do the first test
+echo "Compiling dartc with your changes (mode=release)"
+cd $ROOT_OF_REPO/compiler
+gclient runhooks >> $LOG_FILE 2>&1
+../tools/build.py --mode release >> $LOG_FILE 2>&1
+failTest $? "Error compiling your location changes, check $LOG_FILE"
+
+echo "Running first test against current working copy"
+echo $SCRIPT_PATH/compiler_metrics.sh --stats-prefix=yours --dartc=./out/Release_ia32/dartc $COMPARE_OPTIONS --app=$APP >> $LOG_FILE
+$SCRIPT_PATH/compiler_metrics.sh --stats-prefix=yours --dartc=./out/Release_ia32/dartc $COMPARE_OPTIONS --app=$APP > $STAT1
+failTest $? "Error collecting statistics from working copy"
+
+# switch to tmp for remainder of building
+cd $TMP_DIR
+
+gclient config https://dart.googlecode.com/svn/branches/bleeding_edge/deps/compiler.deps >> $LOG_FILE 2>&1
+failTest $? "Error calling gclient config"
+
+GCLIENT_SYNC="-t "
+if [ "" != "$REV" ]; then
+  GCLIENT_SYNC+="--revision=$REV"
+fi
+
+echo "Checking out clean version of $REV; will take some time. Look at $LOG_FILE for progress"
+gclient sync $GCLIENT_SYNC  >> $LOG_FILE 2>&1
+failTest $? "Error calling gclient sync"
+
+echo "Compiler clean version; may take some time"
+cd compiler
+gclient runhooks >> $LOG_FILE 2>&1
+../tools/build.py --mode release >> $LOG_FILE 2>&1
+failTest $? "Error compiling comparison revision"
+
+# Do the second test
+echo "Running second test against clean copy"
+echo $SCRIPT_PATH/compiler_metrics.sh --stats-prefix=clean --dartc=./out/Release_ia32/dartc $COMPARE_OPTIONS --app=$APP >> $LOG_FILE
+$SCRIPT_PATH/compiler_metrics.sh --stats-prefix=clean --dartc=./out/Release_ia32/dartc $COMPARE_OPTIONS --app=$APP > $STAT2
+failTest $? "Error collecting statistics from clean copy"
+
+calcStats