Doc: Describe launching KCachegrind from Qt Creator

...for profile data visualization.

Change-Id: I878ab4a3dfff0fc43903e482603a516514e79c10
Reviewed-by: hjk <hjk@qt.io>

doc/config/qtcreator-project.qdocconf

@@ -20,7 +20,8 @@ imagedirs = ../images \
             ../../src/plugins/qmldesigner/components/formeditor \
             ../../src/plugins/qmldesigner/components/navigator \
             ../../src/plugins/scxmleditor/common/images \
-            ../../src/plugins/texteditor/images
+            ../../src/plugins/texteditor/images \
+            ../../src/plugins/valgrind/images
 
 exampledirs = ../examples
 examples.fileextensions += *.qml *.svg

doc/src/analyze/creator-valgrind.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Creator documentation.
@@ -149,13 +149,17 @@
 
     You can use the Callgrind tool included in the
     \l{http://valgrind.org/info/tools.html}{Valgrind tool suite} to detect
-    problems that are related to executing functions.
+    problems that are related to executing functions. In addition, you
+    can load the data files generated by Callgrind into the
+    \l{https://kcachegrind.github.io/html/Home.html}{KCachegrind}
+    profile data visualization tool for browsing the performance results.
 
-    After you download and install Valgrind tools, you can use Callgrind from
-    \QC.
+    After you download and install Valgrind tools and KCachegrind, you can use
+    Callgrind and KCachegrind from \QC.
 
-    \note You can install and run Callgrind locally on Linux. You can run
-    it on a remote Linux machine or device from any development machine.
+    \note You can install and run Callgrind and KCachegrind locally on Linux.
+    You can run Callgrind on a remote Linux machine or device from any
+    development machine.
 
     To analyze applications:
 
@@ -207,6 +211,10 @@
 
     \image qtcreator-valgrind-callgrind.png "Profile view"
 
+    To view the data in KCachegrind, select the \inlineimage kcachegrind.png
+    (\uicontrol {Open Results in KCachegrind}) button on the toolbar. \QC
+    launches KCachegrind and loads the data into it for visualization.
+
     \section1 Selecting Profiling Options
 
     You can specify analyzer settings either globally for all projects or
@@ -218,6 +226,9 @@
 
     \image qtcreator-valgrind-callgrind-options.png "Valgrind options"
 
+    In the \uicontrol {KCachegrind executable} field, enter the path to the
+    KCachegrind executable to launch.
+
     In the \uicontrol {Result view: Minimum event cost}
     field, limit the amount of results the profiler gives you to increase
     profiler performance.