Revert "Revert "Make run-test default to optimizing compiler.""

This reverts commit 4650c939e8590b2d421241023e359260b1b59bf1.

Change-Id: I3814c6a579d3d88222b53d7ae63a2d4b03b620a7
diff --git a/test/run-test b/test/run-test
index 047e3fb..2710ea3 100755
--- a/test/run-test
+++ b/test/run-test
@@ -122,10 +122,12 @@
 have_dex2oat="yes"
 have_patchoat="yes"
 have_image="yes"
-image_suffix=""
 pic_image_suffix=""
 multi_image_suffix=""
 android_root="/system"
+# By default we will use optimizing.
+image_args=""
+image_suffix="-optimizing"
 
 while true; do
     if [ "x$1" = "x--host" ]; then
@@ -249,18 +251,18 @@
         image_suffix="-interpreter"
         shift
     elif [ "x$1" = "x--jit" ]; then
-        run_args="${run_args} --jit"
+        image_args="--jit"
         image_suffix="-jit"
         shift
     elif [ "x$1" = "x--optimizing" ]; then
-        run_args="${run_args} -Xcompiler-option --compiler-backend=Optimizing"
+        image_args="-Xcompiler-option --compiler-backend=Optimizing"
         image_suffix="-optimizing"
         shift
     elif [ "x$1" = "x--no-verify" ]; then
         run_args="${run_args} --no-verify"
         shift
     elif [ "x$1" = "x--verify-soft-fail" ]; then
-        run_args="${run_args} --verify-soft-fail"
+        image_args="--verify-soft-fail"
         image_suffix="-interp-ac"
         shift
     elif [ "x$1" = "x--no-optimize" ]; then
@@ -349,6 +351,7 @@
     fi
 done
 
+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