From cae53b24d7a739647193711e9a16c7face7ec72a Mon Sep 17 00:00:00 2001
From: Tim Rowley <timothy.o.rowley@intel.com>
Date: Mon, 26 Jun 2017 13:00:27 -0500
Subject: 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>
---
 src/gallium/drivers/swr/SConscript | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

(limited to 'src/gallium/drivers/swr/SConscript')

diff --git a/src/gallium/drivers/swr/SConscript b/src/gallium/drivers/swr/SConscript
index cdb85e2cad4..0f3cd6c8aa3 100644
--- a/src/gallium/drivers/swr/SConscript
+++ b/src/gallium/drivers/swr/SConscript
@@ -140,12 +140,22 @@ Depends('rasterizer/jitter/gen_state_llvm.h',
 # 2 centroid
 # 2 forcedSampleCount
 # 2 canEarlyZ
+backendPixelRateFileCount = 4
+backendPixelRateFilePat = "rasterizer/core/backends/gen_BackendPixelRate%s.cpp"
+backendPixelRateFiles = map(lambda x: backendPixelRateFilePat % x,
+                            range(0, backendPixelRateFileCount))
 env.CodeGenerate(
-    target = 'rasterizer/core/gen_BackendPixelRate0.cpp',
+    target = 'rasterizer/core/backends/gen_BackendPixelRate.hpp',
     script = swrroot + 'rasterizer/codegen/gen_backends.py',
     source = '',
-    command = python_cmd + ' $SCRIPT --outdir ' + bldroot + '/rasterizer/core --dim 5 2 3 2 2 2 --split 0 --cpp'
-)
+    command = python_cmd + ' $SCRIPT --outdir ' + bldroot + '/rasterizer/core/backends --dim 5 2 3 2 2 2 --numfiles ' + str(backendPixelRateFileCount) + ' --cpp --hpp'
+    )
+Depends(backendPixelRateFiles,
+        ['rasterizer/core/backends/gen_BackendPixelRate.hpp',
+         'rasterizer/archrast/gen_ar_event.hpp',
+         'rasterizer/codegen/gen_knobs.h']
+        )
+
 Depends('rasterizer/jitter/gen_state_llvm.h',
         swrroot + 'rasterizer/codegen/templates/gen_backend.cpp')
 
@@ -153,9 +163,10 @@ Depends('rasterizer/jitter/gen_state_llvm.h',
 built_sources = [
     'rasterizer/codegen/gen_knobs.cpp',
     'rasterizer/archrast/gen_ar_event.cpp',
-    'rasterizer/core/gen_BackendPixelRate0.cpp',
     ]
 
+built_sources += backendPixelRateFiles
+
 source = built_sources
 source += env.ParseSourceList(swrroot + 'Makefile.sources', [
     'CXX_SOURCES',
-- 
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