--- /dev/null
+/*
+ * 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.
+ *
+ * Based on test_fs_cmod_propagation.cpp
+ */
+
+#include <gtest/gtest.h>
+#include "brw_vec4.h"
+#include "brw_vec4_builder.h"
+#include "brw_cfg.h"
+#include "program/program.h"
+
+using namespace brw;
+
+class cmod_propagation_test : public ::testing::Test {
+ virtual void SetUp();
+
+public:
+ struct brw_compiler *compiler;
+ struct brw_device_info *devinfo;
+ struct gl_context *ctx;
+ struct gl_shader_program *shader_prog;
+ struct brw_vertex_program *vp;
+ vec4_visitor *v;
+};
+
+class cmod_propagation_vec4_visitor : public vec4_visitor
+{
+public:
+ cmod_propagation_vec4_visitor(struct brw_compiler *compiler,
+ nir_shader *shader)
+ : vec4_visitor(compiler, NULL, NULL, NULL, shader, NULL,
+ false, -1) {}
+
+protected:
+ /* Dummy implementation for pure virtual methods */
+ virtual dst_reg *make_reg_for_system_value(int location,
+ const glsl_type *type)
+ {
+ unreachable("Not reached");
+ }
+
+ virtual void setup_payload()
+ {
+ unreachable("Not reached");
+ }
+
+ virtual void emit_prolog()
+ {
+ unreachable("Not reached");
+ }
+
+ virtual void emit_program_code()
+ {
+ unreachable("Not reached");
+ }
+
+ virtual void emit_thread_end()
+ {
+ unreachable("Not reached");
+ }
+
+ virtual void emit_urb_write_header(int mrf)
+ {
+ unreachable("Not reached");
+ }
+
+ virtual vec4_instruction *emit_urb_write_opcode(bool complete)
+ {
+ unreachable("Not reached");
+ }
+};
+
+
+void cmod_propagation_test::SetUp()
+{
+ ctx = (struct gl_context *)calloc(1, sizeof(*ctx));
+ compiler = (struct brw_compiler *)calloc(1, sizeof(*compiler));
+ devinfo = (struct brw_device_info *)calloc(1, sizeof(*devinfo));
+ compiler->devinfo = devinfo;
+
+ vp = ralloc(NULL, struct brw_vertex_program);
+
+ nir_shader *shader = nir_shader_create(NULL, MESA_SHADER_VERTEX, NULL);
+
+ v = new cmod_propagation_vec4_visitor(compiler, shader);
+
+ _mesa_init_gl_program(&vp->program.Base, GL_VERTEX_SHADER, 0);
+
+ devinfo->gen = 4;
+}
+
+static vec4_instruction *
+instruction(bblock_t *block, int num)
+{
+ vec4_instruction *inst = (vec4_instruction *)block->start();
+ for (int i = 0; i < num; i++) {
+ inst = (vec4_instruction *)inst->next;
+ }
+ return inst;
+}
+
+static bool
+cmod_propagation(vec4_visitor *v)
+{
+ const bool print = false;
+
+ if (print) {
+ fprintf(stderr, "= Before =\n");
+ v->dump_instructions();
+ }
+
+ bool ret = v->opt_cmod_propagation();
+
+ if (print) {
+ fprintf(stderr, "\n= After =\n");
+ v->dump_instructions();
+ }
+
+ return ret;
+}
+
+TEST_F(cmod_propagation_test, basic)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ dst_reg dest_null = bld.null_reg_f();
+ dest_null.writemask = WRITEMASK_X;
+
+ bld.ADD(dest, src0, src1);
+ bld.CMP(dest_null, src_reg(dest), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest.x src0.xxxx src1.xxxx
+ * 1: cmp.ge.f0 null.x dest.xxxx 0.0f
+ *
+ * = After =
+ * 0: add.ge.f0 dest.x src0.xxxx src1.xxxx
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, basic_different_dst_writemask)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ dst_reg dest_null = bld.null_reg_f();
+
+ bld.ADD(dest, src0, src1);
+ bld.CMP(dest_null, src_reg(dest), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest.x src0 src1
+ * 1: cmp.ge.f0 null.xyzw dest 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, andz_one)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::int_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ src_reg one(1);
+
+ bld.CMP(retype(dest, BRW_REGISTER_TYPE_F), src0, zero, BRW_CONDITIONAL_L);
+ set_condmod(BRW_CONDITIONAL_Z,
+ bld.AND(bld.null_reg_d(), src_reg(dest), one));
+
+ /* = Before =
+ * 0: cmp.l.f0 dest:F src0:F 0F
+ * 1: and.z.f0 null:D dest:D 1D
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_L, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_AND, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_EQ, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, non_cmod_instruction)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::uint_type);
+ src_reg src0 = src_reg(v, glsl_type::uint_type);
+ src_reg zero(0u);
+ bld.FBL(dest, src0);
+ bld.CMP(bld.null_reg_ud(), src_reg(dest), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: fbl dest src0
+ * 1: cmp.ge.f0 null dest 0u
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_FBL, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, intervening_flag_write)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg src2 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ bld.ADD(dest, src0, src1);
+ bld.CMP(bld.null_reg_f(), src2, zero, BRW_CONDITIONAL_GE);
+ bld.CMP(bld.null_reg_f(), src_reg(dest), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest src0 src1
+ * 1: cmp.ge.f0 null src2 0.0f
+ * 2: cmp.ge.f0 null dest 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 1)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 2)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 2)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, intervening_flag_read)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest0 = dst_reg(v, glsl_type::float_type);
+ dst_reg dest1 = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg src2 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ bld.ADD(dest0, src0, src1);
+ set_predicate(BRW_PREDICATE_NORMAL, bld.SEL(dest1, src2, zero));
+ bld.CMP(bld.null_reg_f(), src_reg(dest0), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest0 src0 src1
+ * 1: (+f0) sel dest1 src2 0.0f
+ * 2: cmp.ge.f0 null dest0 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_OPCODE_SEL, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_PREDICATE_NORMAL, instruction(block0, 1)->predicate);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 2)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 2)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, intervening_dest_write)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg src2 = src_reg(v, glsl_type::vec2_type);
+ src_reg zero(0.0f);
+ bld.ADD(offset(dest, 2), src0, src1);
+ bld.emit(SHADER_OPCODE_TEX, dest, src2)
+ ->regs_written = 4;
+ bld.CMP(bld.null_reg_f(), offset(src_reg(dest), 2), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest+2 src0 src1
+ * 1: tex rlen 4 dest+0 src2
+ * 2: cmp.ge.f0 null dest+2 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(2, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(SHADER_OPCODE_TEX, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 2)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 2)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, intervening_flag_read_same_value)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest0 = dst_reg(v, glsl_type::float_type);
+ dst_reg dest1 = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg src2 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ dst_reg dest_null = bld.null_reg_f();
+ dest_null.writemask = WRITEMASK_X;
+
+ set_condmod(BRW_CONDITIONAL_GE, bld.ADD(dest0, src0, src1));
+ set_predicate(BRW_PREDICATE_NORMAL, bld.SEL(dest1, src2, zero));
+ bld.CMP(dest_null, src_reg(dest0), zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add.ge.f0 dest0 src0 src1
+ * 1: (+f0) sel dest1 src2 0.0f
+ * 2: cmp.ge.f0 null.x dest0 0.0f
+ *
+ * = After =
+ * 0: add.ge.f0 dest0 src0 src1
+ * 1: (+f0) sel dest1 src2 0.0f
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(2, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_SEL, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_PREDICATE_NORMAL, instruction(block0, 1)->predicate);
+}
+
+TEST_F(cmod_propagation_test, negate)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ bld.ADD(dest, src0, src1);
+ src_reg tmp_src = src_reg(dest);
+ tmp_src.negate = true;
+ dst_reg dest_null = bld.null_reg_f();
+ dest_null.writemask = WRITEMASK_X;
+ bld.CMP(dest_null, tmp_src, zero, BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest src0 src1
+ * 1: cmp.ge.f0 null.x -dest 0.0f
+ *
+ * = After =
+ * 0: add.le.f0 dest src0 src1
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_LE, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, movnz)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::float_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg src1 = src_reg(v, glsl_type::float_type);
+ dst_reg dest_null = bld.null_reg_f();
+ dest_null.writemask = WRITEMASK_X;
+
+ bld.CMP(dest, src0, src1, BRW_CONDITIONAL_L);
+ set_condmod(BRW_CONDITIONAL_NZ,
+ bld.MOV(dest_null, src_reg(dest)));
+
+ /* = Before =
+ *
+ * 0: cmp.l.f0 dest:F src0:F src1:F
+ * 1: mov.nz.f0 null.x dest:F
+ *
+ * = After =
+ * 0: cmp.l.f0 dest src0:F src1:F
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_L, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, different_types_cmod_with_zero)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::int_type);
+ src_reg src0 = src_reg(v, glsl_type::int_type);
+ src_reg src1 = src_reg(v, glsl_type::int_type);
+ src_reg zero(0.0f);
+ bld.ADD(dest, src0, src1);
+ bld.CMP(bld.null_reg_f(), retype(src_reg(dest), BRW_REGISTER_TYPE_F), zero,
+ BRW_CONDITIONAL_GE);
+
+ /* = Before =
+ *
+ * 0: add dest:D src0:D src1:D
+ * 1: cmp.ge.f0 null:F dest:F 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_ADD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, andnz_non_one)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::int_type);
+ src_reg src0 = src_reg(v, glsl_type::float_type);
+ src_reg zero(0.0f);
+ src_reg nonone(38);
+
+ bld.CMP(retype(dest, BRW_REGISTER_TYPE_F), src0, zero, BRW_CONDITIONAL_L);
+ set_condmod(BRW_CONDITIONAL_NZ,
+ bld.AND(bld.null_reg_d(), src_reg(dest), nonone));
+
+ /* = Before =
+ * 0: cmp.l.f0 dest:F src0:F 0F
+ * 1: and.nz.f0 null:D dest:D 38D
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_L, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_AND, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NZ, instruction(block0, 1)->conditional_mod);
+}
+
+/* Note that basic is using glsl_type:float types, while this one is using
+ * glsl_type::vec4 */
+TEST_F(cmod_propagation_test, basic_vec4)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ src_reg src0 = src_reg(v, glsl_type::vec4_type);
+ src_reg src1 = src_reg(v, glsl_type::vec4_type);
+ src_reg zero(0.0f);
+
+ bld.MUL(dest, src0, src1);
+ bld.CMP(bld.null_reg_f(), src_reg(dest), zero, BRW_CONDITIONAL_NZ);
+
+ /* = Before =
+ * 0: mul dest.xyzw src0.xyzw src1.xyzw
+ * 1: cmp.nz.f0.0 null.xyzw dest.xyzw 0.0f
+ *
+ * = After =
+ * 0: mul.nz.f0.0 dest.xyzw src0.xyzw src1.xyzw
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_MUL, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NZ, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, basic_vec4_different_dst_writemask)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ dest.writemask = WRITEMASK_X;
+ src_reg src0 = src_reg(v, glsl_type::vec4_type);
+ src_reg src1 = src_reg(v, glsl_type::vec4_type);
+ src_reg zero(0.0f);
+ dst_reg dest_null = bld.null_reg_f();
+
+ bld.MUL(dest, src0, src1);
+ bld.CMP(dest_null, src_reg(dest), zero, BRW_CONDITIONAL_NZ);
+
+ /* = Before =
+ * 0: mul dest.x src0 src1
+ * 1: cmp.nz.f0.0 null dest 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_MUL, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NZ, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, mad_one_component_vec4)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ dest.writemask = WRITEMASK_X;
+ src_reg src0 = src_reg(v, glsl_type::vec4_type);
+ src_reg src1 = src_reg(v, glsl_type::vec4_type);
+ src_reg src2 = src_reg(v, glsl_type::vec4_type);
+ src0.swizzle = src1.swizzle = src2.swizzle = BRW_SWIZZLE_XXXX;
+ src2.negate = true;
+ src_reg zero(0.0f);
+ src_reg tmp(dest);
+ tmp.swizzle = BRW_SWIZZLE_XXXX;
+ dst_reg dest_null = bld.null_reg_f();
+ dest_null.writemask = WRITEMASK_X;
+
+ bld.MAD(dest, src0, src1, src2);
+ bld.CMP(dest_null, tmp, zero, BRW_CONDITIONAL_L);
+
+ /* = Before =
+ *
+ * 0: mad dest.x:F src0.xxxx:F src10.xxxx:F -src2.xxxx:F
+ * 1: cmp.l.f0.0 null.x:F dest.xxxx:F 0.0f
+ *
+ * = After =
+ * 0: mad.l.f0 dest.x:F src0.xxxx:F src10.xxxx:F -src2.xxxx:F
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_MAD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_L, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, mad_more_one_component_vec4)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ dest.writemask = WRITEMASK_XW;
+ src_reg src0 = src_reg(v, glsl_type::vec4_type);
+ src_reg src1 = src_reg(v, glsl_type::vec4_type);
+ src_reg src2 = src_reg(v, glsl_type::vec4_type);
+ src0.swizzle = src1.swizzle = src2.swizzle = BRW_SWIZZLE_XXXX;
+ src2.negate = true;
+ src_reg zero(0.0f);
+ src_reg tmp(dest);
+ tmp.swizzle = BRW_SWIZZLE_XXXX;
+ dst_reg dest_null = bld.null_reg_f();
+
+ bld.MAD(dest, src0, src1, src2);
+ bld.CMP(dest_null, tmp, zero, BRW_CONDITIONAL_L);
+
+ /* = Before =
+ *
+ * 0: mad dest.xw:F src0.xxxx:F src10.xxxx:F -src2.xxxx:F
+ * 1: cmp.l.f0.0 null:F dest.xxxx:F zeroF
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_MAD, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_L, instruction(block0, 1)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, cmp_mov_vec4)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::ivec4_type);
+ dest.writemask = WRITEMASK_X;
+ src_reg src0 = src_reg(v, glsl_type::ivec4_type);
+ src0.swizzle = BRW_SWIZZLE_XXXX;
+ src0.file = UNIFORM;
+ src_reg nonone = retype(src_reg(16), BRW_REGISTER_TYPE_D);
+ src_reg mov_src = src_reg(dest);
+ mov_src.swizzle = BRW_SWIZZLE_XXXX;
+ dst_reg dest_null = bld.null_reg_d();
+ dest_null.writemask = WRITEMASK_X;
+
+ bld.CMP(dest, src0, nonone, BRW_CONDITIONAL_GE);
+ set_condmod(BRW_CONDITIONAL_NZ,
+ bld.MOV(dest_null, mov_src));
+
+ /* = Before =
+ *
+ * 0: cmp.ge.f0 dest.x:D u.xxxx:D 16D
+ * 1: mov.nz.f0 null.x:D dest.xxxx:D
+ *
+ * = After =
+ * 0: cmp.ge.f0 dest.x:D u.xxxx:D 16D
+ */
+
+ v->calculate_cfg();
+ bblock_t *block0 = v->cfg->blocks[0];
+
+ EXPECT_EQ(0, block0->start_ip);
+ EXPECT_EQ(1, block0->end_ip);
+
+ EXPECT_TRUE(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(0, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_GE, instruction(block0, 0)->conditional_mod);
+}
+
+TEST_F(cmod_propagation_test, mul_cmp_different_channels_vec4)
+{
+ const vec4_builder bld = vec4_builder(v).at_end();
+ dst_reg dest = dst_reg(v, glsl_type::vec4_type);
+ src_reg src0 = src_reg(v, glsl_type::vec4_type);
+ src_reg src1 = src_reg(v, glsl_type::vec4_type);
+ src_reg zero(0.0f);
+ src_reg cmp_src = src_reg(dest);
+ cmp_src.swizzle = BRW_SWIZZLE4(0,1,3,2);
+
+ bld.MUL(dest, src0, src1);
+ bld.CMP(bld.null_reg_f(), cmp_src, zero, BRW_CONDITIONAL_NZ);
+
+ /* = Before =
+ * 0: mul dest src0 src1
+ * 1: cmp.nz.f0.0 null dest.xywz 0.0f
+ *
+ * = 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(cmod_propagation(v));
+
+ ASSERT_EQ(0, block0->start_ip);
+ ASSERT_EQ(1, block0->end_ip);
+ EXPECT_EQ(BRW_OPCODE_MUL, instruction(block0, 0)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NONE, instruction(block0, 0)->conditional_mod);
+ EXPECT_EQ(BRW_OPCODE_CMP, instruction(block0, 1)->opcode);
+ EXPECT_EQ(BRW_CONDITIONAL_NZ, instruction(block0, 1)->conditional_mod);
+}
projects / platform / upstream / mesa.git / commitdiff