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-rw-r--r--src/mesa/drivers/dri/i965/Makefile.am7
-rw-r--r--src/mesa/drivers/dri/i965/test_fs_saturate_propagation.cpp355
2 files changed, 362 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/Makefile.am b/src/mesa/drivers/dri/i965/Makefile.am
index 07eefce6d68..53e91fe5412 100644
--- a/src/mesa/drivers/dri/i965/Makefile.am
+++ b/src/mesa/drivers/dri/i965/Makefile.am
@@ -54,6 +54,7 @@ TEST_LIBS = \
TESTS = \
test_fs_cmod_propagation \
+ test_fs_saturate_propagation \
test_eu_compact \
test_vf_float_conversions \
test_vec4_copy_propagation \
@@ -67,6 +68,12 @@ test_fs_cmod_propagation_LDADD = \
$(TEST_LIBS) \
$(top_builddir)/src/gtest/libgtest.la
+test_fs_saturate_propagation_SOURCES = \
+ test_fs_saturate_propagation.cpp
+test_fs_saturate_propagation_LDADD = \
+ $(TEST_LIBS) \
+ $(top_builddir)/src/gtest/libgtest.la
+
test_vf_float_conversions_SOURCES = \
test_vf_float_conversions.cpp
test_vf_float_conversions_LDADD = \
diff --git a/src/mesa/drivers/dri/i965/test_fs_saturate_propagation.cpp b/src/mesa/drivers/dri/i965/test_fs_saturate_propagation.cpp
new file mode 100644
index 00000000000..2000830cc67
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/test_fs_saturate_propagation.cpp
@@ -0,0 +1,355 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * 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 <gtest/gtest.h>
+#include "brw_fs.h"
+#include "brw_cfg.h"
+#include "program/program.h"
+
+class saturate_propagation_test : public ::testing::Test {
+ virtual void SetUp();
+
+public:
+ struct brw_context *brw;
+ struct gl_context *ctx;
+ struct brw_wm_prog_data *prog_data;
+ struct gl_shader_program *shader_prog;
+ struct brw_fragment_program *fp;
+ fs_visitor *v;
+};
+
+class saturate_propagation_fs_visitor : public fs_visitor
+{
+public:
+ saturate_propagation_fs_visitor(struct brw_context *brw,
+ struct brw_wm_prog_data *prog_data,
+ struct gl_shader_program *shader_prog)
+ : fs_visitor(brw, NULL, NULL, prog_data, shader_prog, NULL, 8) {}
+};
+
+
+void saturate_propagation_test::SetUp()
+{
+ brw = (struct brw_context *)calloc(1, sizeof(*brw));
+ ctx = &brw->ctx;
+
+ fp = ralloc(NULL, struct brw_fragment_program);
+ prog_data = ralloc(NULL, struct brw_wm_prog_data);
+ shader_prog = ralloc(NULL, struct gl_shader_program);
+
+ v = new saturate_propagation_fs_visitor(brw, prog_data, shader_prog);
+
+ _mesa_init_fragment_program(ctx, &fp->program, GL_FRAGMENT_SHADER, 0);
+
+ brw->gen = 4;
+}
+
+static fs_inst *
+instruction(bblock_t *block, int num)
+{
+ fs_inst *inst = (fs_inst *)block->start();
+ for (int i = 0; i < num; i++) {
+ inst = (fs_inst *)inst->next;
+ }
+ return inst;
+}
+
+static bool
+saturate_propagation(fs_visitor *v)
+{
+ const bool print = false;
+
+ if (print) {
+ fprintf(stderr, "= Before =\n");
+ v->cfg->dump(v);
+ }
+
+ bool ret = v->opt_saturate_propagation();
+
+ if (print) {
+ fprintf(stderr, "\n= After =\n");
+ v->cfg->dump(v);
+ }
+
+ return ret;
+}
+
+TEST_F(saturate_propagation_test, basic)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1);
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+
+ /* = Before =
+ *
+ * 0: add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 dst0
+ *
+ * = After =
+ * 0: add.sat(8) dst0 src0 src1
+ * 1: mov(8) dst1 dst0
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_TRUE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_FALSE(instruction(block0, 1)->saturate);
+}
+
+TEST_F(saturate_propagation_test, other_non_saturated_use)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg dst2 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1);
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+ v->emit(BRW_OPCODE_ADD, dst2, dst0, src0);
+
+ /* = Before =
+ *
+ * 0: add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 dst0
+ * 2: add(8) dst2 dst0 src0
+ *
+ * = After =
+ * (no changes)
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+
+ EXPECT_FALSE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_FALSE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_TRUE(instruction(block0, 1)->saturate);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 2)->opcode);
+}
+
+TEST_F(saturate_propagation_test, predicated_instruction)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1)
+ ->predicate = BRW_PREDICATE_NORMAL;
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+
+ /* = Before =
+ *
+ * 0: (+f0) add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 dst0
+ *
+ * = After =
+ * (no changes)
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_FALSE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_FALSE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_TRUE(instruction(block0, 1)->saturate);
+}
+
+TEST_F(saturate_propagation_test, neg_mov_sat)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1);
+ dst0.negate = true;
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+
+ /* = Before =
+ *
+ * 0: add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 -dst0
+ *
+ * = After =
+ * (no changes)
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_FALSE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_FALSE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_TRUE(instruction(block0, 1)->saturate);
+}
+
+TEST_F(saturate_propagation_test, abs_mov_sat)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1);
+ dst0.abs = true;
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+
+ /* = Before =
+ *
+ * 0: add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 (abs)dst0
+ *
+ * = After =
+ * (no changes)
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_FALSE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_FALSE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_TRUE(instruction(block0, 1)->saturate);
+}
+
+TEST_F(saturate_propagation_test, producer_saturates)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg dst2 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1)
+ ->saturate = true;
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+ v->emit(BRW_OPCODE_MOV, dst2, dst0);
+
+ /* = Before =
+ *
+ * 0: add.sat(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 dst0
+ * 2: mov(8) dst2 dst0
+ *
+ * = After =
+ * 0: add.sat(8) dst0 src0 src1
+ * 1: mov(8) dst1 dst0
+ * 2: mov(8) dst2 dst0
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+
+ EXPECT_TRUE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_TRUE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_FALSE(instruction(block0, 1)->saturate);
+}
+
+TEST_F(saturate_propagation_test, intervening_saturating_copy)
+{
+ fs_reg dst0 = v->vgrf(glsl_type::float_type);
+ fs_reg dst1 = v->vgrf(glsl_type::float_type);
+ fs_reg dst2 = v->vgrf(glsl_type::float_type);
+ fs_reg src0 = v->vgrf(glsl_type::float_type);
+ fs_reg src1 = v->vgrf(glsl_type::float_type);
+ v->emit(BRW_OPCODE_ADD, dst0, src0, src1);
+ v->emit(BRW_OPCODE_MOV, dst1, dst0)
+ ->saturate = true;
+ v->emit(BRW_OPCODE_MOV, dst2, dst0)
+ ->saturate = true;
+
+ /* = Before =
+ *
+ * 0: add(8) dst0 src0 src1
+ * 1: mov.sat(8) dst1 dst0
+ * 2: mov.sat(8) dst2 dst0
+ *
+ * = After =
+ * 0: add.sat(8) dst0 src0 src1
+ * 1: mov(8) dst1 dst0
+ * 2: mov(8) dst2 dst0
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+
+ EXPECT_TRUE(saturate_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_TRUE(instruction(block0, 0)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 1)->opcode);
+ EXPECT_FALSE(instruction(block0, 1)->saturate);
+ EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 2)->opcode);
+ EXPECT_FALSE(instruction(block0, 2)->saturate);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 19:04:46 +0000