Signed-off-by: Gert Wollny <gw.foss...@gmail.com>
---
 src/mesa/state_tracker/tests/Makefile.am           |  20 +-
 src/mesa/state_tracker/tests/st_tests_common.h     |   7 +-
 .../tests/test_glsl_to_tgsi_array_merge.cpp        | 296 +++++++++++++++++++++
 3 files changed, 317 insertions(+), 6 deletions(-)
 create mode 100644 
src/mesa/state_tracker/tests/test_glsl_to_tgsi_array_merge.cpp

diff --git a/src/mesa/state_tracker/tests/Makefile.am 
b/src/mesa/state_tracker/tests/Makefile.am
index cbb7447ee2..160f85a8bf 100644
--- a/src/mesa/state_tracker/tests/Makefile.am
+++ b/src/mesa/state_tracker/tests/Makefile.am
@@ -17,8 +17,10 @@ AM_CPPFLAGS = \
 
 if HAVE_STD_CXX11
 if HAVE_SHARED_GLAPI
-TESTS = st-renumerate-test
-check_PROGRAMS = st-renumerate-test
+TESTS = st-renumerate-test \
+       st-array-merge-test
+check_PROGRAMS = st-renumerate-test \
+       st-array-merge-test
 
 check_LIBRARIES = libmesa-st-tests-common.a
 endif
@@ -34,7 +36,13 @@ st_renumerate_test_SOURCES =                 \
 st_renumerate_test_LDFLAGS = \
        $(LLVM_LDFLAGS)
 
-st_renumerate_test_LDADD = \
+st_array_merge_test_SOURCES = \
+       test_glsl_to_tgsi_array_merge.cpp
+
+st_array_merge_test_LDFLAGS = \
+       $(LLVM_LDFLAGS)
+
+st_common_LDADD = \
        libmesa-st-tests-common.a \
        $(top_builddir)/src/mesa/libmesagallium.la \
        $(top_builddir)/src/mapi/shared-glapi/libglapi.la \
@@ -43,3 +51,9 @@ st_renumerate_test_LDADD = \
        $(top_builddir)/src/gtest/libgtest.la \
        $(GALLIUM_COMMON_LIB_DEPS) \
        $(LLVM_LIBS)
+
+st_renumerate_test_LDADD = \
+       $(st_common_LDADD)
+
+st_array_merge_test_LDADD = \
+       $(st_common_LDADD)
diff --git a/src/mesa/state_tracker/tests/st_tests_common.h 
b/src/mesa/state_tracker/tests/st_tests_common.h
index 0fcec623fe..98d227ae3c 100644
--- a/src/mesa/state_tracker/tests/st_tests_common.h
+++ b/src/mesa/state_tracker/tests/st_tests_common.h
@@ -24,14 +24,15 @@
 #ifndef mesa_st_tests_h
 #define mesa_st_tests_h
 
-#include <state_tracker/st_glsl_to_tgsi_temprename.h>
-#include <gtest/gtest.h>
+#include "state_tracker/st_glsl_to_tgsi_temprename.h"
+#include "state_tracker/st_glsl_to_tgsi_array_merge.h"
+#include "gtest/gtest.h"
+
 #include <utility>
 
 #define MP(X, W) std::make_pair(X, W)
 #define MT(X,Y,Z) std::make_tuple(X,Y,Z)
 
-
 /* Use this to make the compiler pick the swizzle constructor below */
 struct SWZ {};
 
diff --git a/src/mesa/state_tracker/tests/test_glsl_to_tgsi_array_merge.cpp 
b/src/mesa/state_tracker/tests/test_glsl_to_tgsi_array_merge.cpp
new file mode 100644
index 0000000000..d8a5e7fbd1
--- /dev/null
+++ b/src/mesa/state_tracker/tests/test_glsl_to_tgsi_array_merge.cpp
@@ -0,0 +1,296 @@
+/*
+ * Copyright © 2017 Gert Wollny
+ *
+ * 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.
+ */
+
+
+#include "st_tests_common.h"
+
+#include "tgsi/tgsi_ureg.h"
+#include "tgsi/tgsi_info.h"
+#include "mesa/program/prog_instruction.h"
+#include "gtest/gtest.h"
+
+#include <utility>
+#include <algorithm>
+#include <iostream>
+
+using std::vector;
+
+using namespace tgsi_array_merge;
+using SwizzleRemapTest=testing::Test;
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_x_x)
+{
+   array_remapping map1(10, 1, 1);
+   ASSERT_EQ(map1.target_array_id(), 10u);
+   ASSERT_EQ(map1.map_writemask(1), 2);
+   ASSERT_EQ(map1.map_one_swizzle(0), 1);
+   ASSERT_EQ(map1.combined_access_mask(), 3);
+}
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_xy_x)
+{
+   array_remapping map1(5, 3, 1);
+   ASSERT_EQ(map1.target_array_id(), 5u);
+   ASSERT_EQ(map1.map_writemask(1), 4);
+   ASSERT_EQ(map1.map_one_swizzle(0), 2);
+   ASSERT_EQ(map1.combined_access_mask(), 0x7);
+}
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_no_reswizzle)
+{
+   array_remapping map1(5, 3);
+   ASSERT_EQ(map1.target_array_id(), 5u);
+   for (int i = 1; i < 16; ++i)
+      ASSERT_EQ(map1.map_writemask(i), i);
+
+   for (int i = 0; i < 4; ++i)
+      ASSERT_EQ(map1.map_one_swizzle(i), i);
+}
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_xyz_x)
+{
+   array_remapping map1(5, 7, 1);
+   ASSERT_EQ(map1.target_array_id(), 5u);
+   ASSERT_EQ(map1.map_writemask(1), 8);
+   ASSERT_EQ(map1.map_one_swizzle(0), 3);
+   ASSERT_EQ(map1.combined_access_mask(), 0xF);
+}
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_xy_xy)
+{
+   array_remapping map1(5, 3, 3);
+   ASSERT_EQ(map1.target_array_id(), 5u);
+   ASSERT_EQ(map1.map_writemask(1), 4);
+   ASSERT_EQ(map1.map_writemask(2), 8);
+   ASSERT_EQ(map1.map_writemask(3), 0xC);
+   ASSERT_EQ(map1.map_one_swizzle(0), 2);
+   ASSERT_EQ(map1.map_one_swizzle(1), 3);
+   ASSERT_EQ(map1.combined_access_mask(), 0xF);
+}
+
+TEST_F(SwizzleRemapTest, ArrayRemappingBase_xz_xw)
+{
+   array_remapping map1(5, 5, 9);
+   std::cerr << map1 << "\n";
+   ASSERT_EQ(map1.target_array_id(), 5u);
+   ASSERT_EQ(map1.map_writemask(1), 2);
+   ASSERT_EQ(map1.map_writemask(8), 8);
+   ASSERT_EQ(map1.map_writemask(9), 0xA);
+   ASSERT_EQ(map1.map_one_swizzle(0), 1);
+   ASSERT_EQ(map1.map_one_swizzle(3), 3);
+   ASSERT_EQ(map1.combined_access_mask(), 0xF);
+}
+
+using ArrayMergeTest=testing::Test;
+
+TEST_F(ArrayMergeTest, ArrayMergeTwoSwizzles)
+{
+   vector<array_live_range> alt = {
+      {1, 4, 1, 5, WRITEMASK_X},
+      {2, 4, 2, 5, WRITEMASK_X},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_X, WRITEMASK_X},
+   };
+
+   vector<array_remapping> result(alt.size() + 1);
+
+   get_array_remapping(2, &alt[0], &result[0]);
+
+   EXPECT_EQ(result[1], expect[0]);
+   EXPECT_EQ(result[2], expect[1]);
+
+}
+
+TEST_F(ArrayMergeTest, ArrayMergeFourSwizzles)
+{
+   vector<array_live_range> alt = {
+      {1, 8, 1, 7, WRITEMASK_X},
+      {2, 7, 2, 7, WRITEMASK_X},
+      {3, 6, 3, 7, WRITEMASK_X},
+      {4, 5, 4, 7, WRITEMASK_X},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_X, WRITEMASK_X},
+      {1, WRITEMASK_XY, WRITEMASK_X},
+      {1, WRITEMASK_XYZ, WRITEMASK_X},
+   };
+
+   vector<array_remapping> result(alt.size() + 1);
+
+   get_array_remapping(4, &alt[0], &result[0]);
+
+   EXPECT_EQ(result[1], expect[0]);
+   EXPECT_EQ(result[2], expect[1]);
+   EXPECT_EQ(result[3], expect[2]);
+   EXPECT_EQ(result[4], expect[3]);
+
+}
+
+
+TEST_F(ArrayMergeTest, SimpleChainMerge)
+{
+   vector<array_live_range> input = {
+      {1, 3, 1, 5, WRITEMASK_XYZW},
+      {2, 2, 6, 7, WRITEMASK_XYZW},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_XYZW},
+   };
+
+   vector<array_remapping> result(3);
+   get_array_remapping(2, &input[0], &result[0]);
+
+   for (unsigned i = 0; i < expect.size(); ++i)
+      EXPECT_EQ(result[i + 1], expect[i]);
+}
+
+TEST_F(ArrayMergeTest, MergeAndInterleave)
+{
+   vector<array_live_range> input = {
+      {1, 5, 1, 5, WRITEMASK_X},
+      {2, 4, 6, 7, WRITEMASK_X},
+      {3, 3, 1, 5, WRITEMASK_X},
+      {4, 2, 6, 7, WRITEMASK_X},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_X},
+      {1, WRITEMASK_X, WRITEMASK_X},
+      {1, WRITEMASK_X, WRITEMASK_X}
+   };
+   vector<array_remapping> result(input.size() + 1);
+   get_array_remapping(input.size(), &input[0], &result[0]);
+
+   for (unsigned i = 0; i < expect.size(); ++i)
+      EXPECT_EQ(result[i + 1], expect[i]);
+}
+
+TEST_F(ArrayMergeTest, MergeAndInterleave2)
+{
+   vector<array_live_range> input = {
+      {1, 5, 1, 5, WRITEMASK_X},
+      {2, 4, 6, 7, WRITEMASK_X},
+      {3, 3, 1, 8, WRITEMASK_XY},
+      {4, 2, 6, 7, WRITEMASK_X},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_X},
+      {1, WRITEMASK_X, WRITEMASK_XY},
+      {1, WRITEMASK_XYZ, WRITEMASK_X}
+   };
+   vector<array_remapping> result(input.size() + 1);
+   get_array_remapping(input.size(), &input[0], &result[0]);
+
+   for (unsigned i = 0; i < expect.size(); ++i)
+      EXPECT_EQ(result[i + 1], expect[i]);
+}
+
+
+TEST_F(ArrayMergeTest, MergeAndInterleave3)
+{
+   vector<array_live_range> input = {
+      {1, 5, 1, 5, WRITEMASK_X},
+      {2, 4, 6, 7, WRITEMASK_XY},
+      {3, 3, 1, 5, WRITEMASK_X}
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_X},
+      {1, WRITEMASK_X, WRITEMASK_X}
+   };
+   vector<array_remapping> result(input.size() + 1);
+   get_array_remapping(input.size(), &input[0], &result[0]);
+
+   for (unsigned i = 0; i < expect.size(); ++i)
+      EXPECT_EQ(result[i + 1], expect[i]);
+}
+
+TEST_F(ArrayMergeTest, MergeAndInterleave4)
+{
+   vector<array_live_range> input = {
+      {1, 7, 1, 5, WRITEMASK_X},
+      {2, 6, 6, 7, WRITEMASK_XY},
+      {3, 5, 1, 5, WRITEMASK_X},
+      {4, 4, 8, 9, WRITEMASK_XYZ},
+      {5, 3, 8, 9, WRITEMASK_W},
+      {6, 2, 10, 11, WRITEMASK_XYZW},
+   };
+
+   vector<array_remapping> expect = {
+      {},
+      {1, WRITEMASK_XY},
+      {1, WRITEMASK_X, WRITEMASK_X},
+      {1, WRITEMASK_XYZ},
+      {1, WRITEMASK_XYZ, WRITEMASK_W},
+      {1, WRITEMASK_XYZW}
+   };
+   vector<array_remapping> result(input.size() + 1);
+   get_array_remapping(input.size(), &input[0], &result[0]);
+
+   EXPECT_EQ(result[1], expect[0]);
+   EXPECT_EQ(result[2], expect[1]);
+   EXPECT_EQ(result[3], expect[2]);
+   EXPECT_EQ(result[4], expect[3]);
+   EXPECT_EQ(result[5], expect[4]);
+   EXPECT_EQ(result[6], expect[5]);
+
+}
+
+TEST_F(ArrayMergeTest, MergeAndInterleave5)
+{
+   vector<array_live_range> input = {
+      {1, 7, 1, 5, WRITEMASK_X},
+      {2, 6, 1, 3, WRITEMASK_X},
+      {3, 5, 4, 5, WRITEMASK_X},
+      {4, 4, 6, 10, WRITEMASK_XY},
+      {5, 8, 1, 10, WRITEMASK_XY}
+   };
+
+   vector<array_remapping> expect = {
+      {5, WRITEMASK_XY, WRITEMASK_XY}, /* expect xy because of interleaving */
+      {5, WRITEMASK_XYZ, WRITEMASK_X},
+      {5, WRITEMASK_XYZ, WRITEMASK_X},
+      {5, WRITEMASK_XY, WRITEMASK_XY},
+      {}
+   };
+   vector<array_remapping> result(input.size() + 1);
+   get_array_remapping(input.size(), &input[0], &result[0]);
+
+   EXPECT_EQ(result[1], expect[0]);
+   EXPECT_EQ(result[2], expect[1]);
+   EXPECT_EQ(result[3], expect[2]);
+   EXPECT_EQ(result[4], expect[3]);
+   EXPECT_EQ(result[5], expect[4]);
+
+}
-- 
2.13.6

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