ART: dex2oat flag for HGraphVisualizer dump file

This patch adds a new '--dump-cfg=<file>' flag to dex2oat which
specifies the file that HGraphVisualizer will store its output into.
Until now the graph was dumped to 'art.cfg' in the current working
directory. To make Checker work with run-test, the output directory
needs to be customizable.

Change-Id: I4a940f7708b88deea5a0e51d13aed13e52199349

1 files changed, 3 insertions, 2 deletions

diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index 692d452f54..eaecbb04ae 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -149,11 +149,12 @@ void OptimizingCompiler::Init() {
   // Enable C1visualizer output. Must be done in Init() because the compiler
   // driver is not fully initialized when passed to the compiler's constructor.
   CompilerDriver* driver = GetCompilerDriver();
-  if (driver->GetDumpPasses()) {
+  const std::string cfg_file_name = driver->GetDumpCfgFileName();
+  if (!cfg_file_name.empty()) {
     CHECK_EQ(driver->GetThreadCount(), 1U)
       << "Graph visualizer requires the compiler to run single-threaded. "
       << "Invoke the compiler with '-j1'.";
-    visualizer_output_.reset(new std::ofstream("art.cfg"));
+    visualizer_output_.reset(new std::ofstream(cfg_file_name));
   }
 }