swr/rast: Split backend.cpp to improve compile time

Hardcode split to four files currently.  Decreases swr build
time on a quad-core by ~10%.

Reviewed-by: Bruce Cherniak <bruce.cherniak at intel.com>

3 files changed, 63 insertions, 0 deletions

diff --git a/src/gallium/drivers/swr/rasterizer/codegen/gen_backends.py b/src/gallium/drivers/swr/rasterizer/codegen/gen_backends.py
index f65f7648c41..3f0790c8dae 100644
--- a/src/gallium/drivers/swr/rasterizer/codegen/gen_backends.py
+++ b/src/gallium/drivers/swr/rasterizer/codegen/gen_backends.py
@@ -35,7 +35,9 @@ def main(args=sys.argv[1:]):
     parser.add_argument('--dim', help='gBackendPixelRateTable array dimensions', nargs='+', type=int, required=True)
     parser.add_argument('--outdir', help='output directory', nargs='?', type=str, default=thisDir)
     parser.add_argument('--split', help='how many lines of initialization per file [0=no split]', nargs='?', type=int, default='512')
+    parser.add_argument('--numfiles', help='how many output files to generate', nargs='?', type=int, default='0')
     parser.add_argument('--cpp', help='Generate cpp file(s)', action='store_true', default=False)
+    parser.add_argument('--hpp', help='Generate hpp file', action='store_true', default=False)
     parser.add_argument('--cmake', help='Generate cmake file', action='store_true', default=False)
 
     args = parser.parse_args(args);
@@ -43,11 +45,14 @@ def main(args=sys.argv[1:]):
     class backendStrs :
         def __init__(self) :
             self.outFileName = 'gen_BackendPixelRate%s.cpp'
+            self.outHeaderName = 'gen_BackendPixelRate.hpp'
             self.functionTableName = 'gBackendPixelRateTable'
             self.funcInstanceHeader = ' = BackendPixelRate<SwrBackendTraits<'
             self.template = 'gen_backend.cpp'
+            self.hpp_template = 'gen_header_init.hpp'
             self.cmakeFileName = 'gen_backends.cmake'
             self.cmakeSrcVar = 'GEN_BACKEND_SOURCES'
+            self.tableName = 'BackendPixelRate'
 
     backend = backendStrs()
 
@@ -77,6 +82,8 @@ def main(args=sys.argv[1:]):
         numFiles = 1
     else:
         numFiles = (len(output_list) + args.split - 1) // args.split
+    if (args.numfiles != 0):
+        numFiles = args.numfiles
     linesPerFile = (len(output_list) + numFiles - 1) // numFiles
     chunkedList = [output_list[x:x+linesPerFile] for x in range(0, len(output_list), linesPerFile)]
 
@@ -94,6 +101,18 @@ def main(args=sys.argv[1:]):
                 fileNum=fileNum,
                 funcList=chunkedList[fileNum])
 
+    if args.hpp:
+        baseHppName = os.path.join(args.outdir, backend.outHeaderName)
+        templateHpp = os.path.join(thisDir, 'templates', backend.hpp_template)
+
+        MakoTemplateWriter.to_file(
+            templateHpp,
+            baseHppName,
+            cmdline=sys.argv,
+            numFiles=numFiles,
+            filename=backend.outHeaderName,
+            tableName=backend.tableName)
+
     # generate gen_backend.cmake file
     if args.cmake:
         templateCmake = os.path.join(thisDir, 'templates', 'gen_backend.cmake')
diff --git a/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_backend.cpp b/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_backend.cpp
index 4eb4ad4f2b3..088b1cd79d5 100644
--- a/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_backend.cpp
+++ b/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_backend.cpp
@@ -32,6 +32,7 @@
 //============================================================================
 
 #include "core/backend.h"
+#include "core/backend_impl.h"
 
 void InitBackendPixelRate${fileNum}()
 {
diff --git a/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_header_init.hpp b/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_header_init.hpp
new file mode 100644
index 00000000000..5625ef8a0de
--- /dev/null
+++ b/src/gallium/drivers/swr/rasterizer/codegen/templates/gen_header_init.hpp
@@ -0,0 +1,43 @@
+//============================================================================
+// Copyright (C) 2017 Intel Corporation.   All Rights Reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice (including the next
+// paragraph) shall be included in all copies or substantial portions of the
+// Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+// 
+// @file ${filename}
+// 
+// @brief auto-generated file
+// 
+// DO NOT EDIT
+//
+// Generation Command Line:
+//  ${'\n//    '.join(cmdline)}
+//
+//============================================================================
+
+%for num in range(numFiles):
+void Init${tableName}${num}();
+%endfor
+
+static INLINE void Init${tableName}()
+{
+    %for num in range(numFiles):
+    Init${tableName}${num}();
+    %endfor
+}