[XRay][tools] Rename llvm-xray filenames from .cc -> .cpp (NFC)

Summary:
This brings the filenames in accordance to the style guide and LLVM
conventions for C++ filenames.

As suggested by rnk@ in D46068.

Reviewers: rnk

Subscribers: mgorny, mgrang, llvm-commits

Differential Revision: https://reviews.llvm.org/D46301

llvm-svn: 331321
diff --git a/llvm/tools/llvm-xray/CMakeLists.txt b/llvm/tools/llvm-xray/CMakeLists.txt
index 73d81df..ca2937e 100644
--- a/llvm/tools/llvm-xray/CMakeLists.txt
+++ b/llvm/tools/llvm-xray/CMakeLists.txt
@@ -7,14 +7,14 @@
   XRay)
 
 set(LLVM_XRAY_TOOLS
-  func-id-helper.cc
-  xray-account.cc
-  xray-color-helper.cc
-  xray-converter.cc
-  xray-extract.cc
-  xray-graph.cc
-  xray-graph-diff.cc
-  xray-stacks.cc
-  xray-registry.cc)
+  func-id-helper.cpp
+  xray-account.cpp
+  xray-color-helper.cpp
+  xray-converter.cpp
+  xray-extract.cpp
+  xray-graph.cpp
+  xray-graph-diff.cpp
+  xray-stacks.cpp
+  xray-registry.cpp)
 
-add_llvm_tool(llvm-xray llvm-xray.cc ${LLVM_XRAY_TOOLS})
+add_llvm_tool(llvm-xray llvm-xray.cpp ${LLVM_XRAY_TOOLS})
diff --git a/llvm/tools/llvm-xray/func-id-helper.cc b/llvm/tools/llvm-xray/func-id-helper.cpp
similarity index 96%
rename from llvm/tools/llvm-xray/func-id-helper.cc
rename to llvm/tools/llvm-xray/func-id-helper.cpp
index 9bf55b2..c2bef6d 100644
--- a/llvm/tools/llvm-xray/func-id-helper.cc
+++ b/llvm/tools/llvm-xray/func-id-helper.cpp
@@ -1,4 +1,4 @@
-//===- xray-fc-account.cc - XRay Function Call Accounting Tool ------------===//
+//===- xray-fc-account.cpp: XRay Function Call Accounting Tool ------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/llvm-xray.cc b/llvm/tools/llvm-xray/llvm-xray.cpp
similarity index 95%
rename from llvm/tools/llvm-xray/llvm-xray.cc
rename to llvm/tools/llvm-xray/llvm-xray.cpp
index 17cc9f9..e74628f 100644
--- a/llvm/tools/llvm-xray/llvm-xray.cc
+++ b/llvm/tools/llvm-xray/llvm-xray.cpp
@@ -1,4 +1,4 @@
-//===- llvm-xray.cc - XRay Tool Main Program ------------------------------===//
+//===- llvm-xray.cpp: XRay Tool Main Program ------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-account.cc b/llvm/tools/llvm-xray/xray-account.cpp
similarity index 100%
rename from llvm/tools/llvm-xray/xray-account.cc
rename to llvm/tools/llvm-xray/xray-account.cpp
diff --git a/llvm/tools/llvm-xray/xray-color-helper.cc b/llvm/tools/llvm-xray/xray-color-helper.cpp
similarity index 98%
rename from llvm/tools/llvm-xray/xray-color-helper.cc
rename to llvm/tools/llvm-xray/xray-color-helper.cpp
index 61314d3..78a264b 100644
--- a/llvm/tools/llvm-xray/xray-color-helper.cc
+++ b/llvm/tools/llvm-xray/xray-color-helper.cpp
@@ -1,4 +1,4 @@
-//===-- xray-graph.cc - XRay Function Call Graph Renderer -----------------===//
+//===-- xray-graph.cpp: XRay Function Call Graph Renderer -----------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-converter.cc b/llvm/tools/llvm-xray/xray-converter.cpp
similarity index 99%
rename from llvm/tools/llvm-xray/xray-converter.cc
rename to llvm/tools/llvm-xray/xray-converter.cpp
index aa0da55..ee6a76a 100644
--- a/llvm/tools/llvm-xray/xray-converter.cc
+++ b/llvm/tools/llvm-xray/xray-converter.cpp
@@ -1,4 +1,4 @@
-//===- xray-converter.cc - XRay Trace Conversion --------------------------===//
+//===- xray-converter.cpp: XRay Trace Conversion --------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-extract.cc b/llvm/tools/llvm-xray/xray-extract.cpp
similarity index 97%
rename from llvm/tools/llvm-xray/xray-extract.cc
rename to llvm/tools/llvm-xray/xray-extract.cpp
index cd87798..10fe7d8 100644
--- a/llvm/tools/llvm-xray/xray-extract.cc
+++ b/llvm/tools/llvm-xray/xray-extract.cpp
@@ -1,4 +1,4 @@
-//===- xray-extract.cc - XRay Instrumentation Map Extraction --------------===//
+//===- xray-extract.cpp: XRay Instrumentation Map Extraction --------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-graph-diff.cc b/llvm/tools/llvm-xray/xray-graph-diff.cpp
similarity index 99%
rename from llvm/tools/llvm-xray/xray-graph-diff.cc
rename to llvm/tools/llvm-xray/xray-graph-diff.cpp
index 3c69b3f..a22f2a9 100644
--- a/llvm/tools/llvm-xray/xray-graph-diff.cc
+++ b/llvm/tools/llvm-xray/xray-graph-diff.cpp
@@ -1,4 +1,4 @@
-//===-- xray-graph-diff.cc - XRay Function Call Graph Renderer ------------===//
+//===-- xray-graph-diff.cpp: XRay Function Call Graph Renderer ------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-graph.cc b/llvm/tools/llvm-xray/xray-graph.cpp
similarity index 99%
rename from llvm/tools/llvm-xray/xray-graph.cc
rename to llvm/tools/llvm-xray/xray-graph.cpp
index feb6763..c619bf8 100644
--- a/llvm/tools/llvm-xray/xray-graph.cc
+++ b/llvm/tools/llvm-xray/xray-graph.cpp
@@ -1,4 +1,4 @@
-//===-- xray-graph.cc - XRay Function Call Graph Renderer -----------------===//
+//===-- xray-graph.cpp: XRay Function Call Graph Renderer -----------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-registry.cc b/llvm/tools/llvm-xray/xray-registry.cpp
similarity index 94%
rename from llvm/tools/llvm-xray/xray-registry.cc
rename to llvm/tools/llvm-xray/xray-registry.cpp
index 36d3a2e..fe58e4d 100644
--- a/llvm/tools/llvm-xray/xray-registry.cc
+++ b/llvm/tools/llvm-xray/xray-registry.cpp
@@ -1,4 +1,4 @@
-//===- xray-registry.cc - Implement a command registry. -------------------===//
+//===- xray-registry.cpp: Implement a command registry. -------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
diff --git a/llvm/tools/llvm-xray/xray-stacks.cc b/llvm/tools/llvm-xray/xray-stacks.cpp
similarity index 99%
rename from llvm/tools/llvm-xray/xray-stacks.cc
rename to llvm/tools/llvm-xray/xray-stacks.cpp
index 9474de0..1a60697 100644
--- a/llvm/tools/llvm-xray/xray-stacks.cc
+++ b/llvm/tools/llvm-xray/xray-stacks.cpp
@@ -1,4 +1,4 @@
-//===- xray-stacks.cc - XRay Function Call Stack Accounting ---------------===//
+//===- xray-stacks.cpp: XRay Function Call Stack Accounting ---------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //