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/*
* Copyright © 2014 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_vec4.h"
#include "brw_vs.h"
using namespace brw;
int ret = 0;
class copy_propagation_test : public ::testing::Test {
virtual void SetUp();
public:
struct brw_context *brw;
struct brw_device_info *devinfo;
struct gl_context *ctx;
struct gl_shader_program *shader_prog;
struct brw_vertex_program *vp;
vec4_visitor *v;
};
class copy_propagation_vec4_visitor : public vec4_visitor
{
public:
copy_propagation_vec4_visitor(struct brw_context *brw,
struct gl_shader_program *shader_prog)
: vec4_visitor(brw, NULL, NULL, NULL, NULL, shader_prog,
MESA_SHADER_VERTEX, NULL,
false /* no_spills */,
ST_NONE, ST_NONE, ST_NONE)
{
}
protected:
virtual dst_reg *make_reg_for_system_value(ir_variable *ir)
{
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 copy_propagation_test::SetUp()
{
brw = (struct brw_context *)calloc(1, sizeof(*brw));
devinfo = (struct brw_device_info *)calloc(1, sizeof(*brw));
brw->intelScreen = (struct intel_screen *)calloc(1, sizeof(*brw->intelScreen));
brw->intelScreen->devinfo = devinfo;
ctx = &brw->ctx;
vp = ralloc(NULL, struct brw_vertex_program);
shader_prog = ralloc(NULL, struct gl_shader_program);
v = new copy_propagation_vec4_visitor(brw, shader_prog);
_mesa_init_vertex_program(ctx, &vp->program, GL_VERTEX_SHADER, 0);
brw->gen = devinfo->gen = 4;
}
static void
copy_propagation(vec4_visitor *v)
{
bool print = false;
if (print) {
fprintf(stderr, "instructions before:\n");
v->dump_instructions();
}
v->calculate_cfg();
v->opt_copy_propagation();
if (print) {
fprintf(stderr, "instructions after:\n");
v->dump_instructions();
}
}
TEST_F(copy_propagation_test, test_swizzle_swizzle)
{
dst_reg a = dst_reg(v, glsl_type::vec4_type);
dst_reg b = dst_reg(v, glsl_type::vec4_type);
dst_reg c = dst_reg(v, glsl_type::vec4_type);
v->emit(v->ADD(a, src_reg(a), src_reg(a)));
v->emit(v->MOV(b, swizzle(src_reg(a), BRW_SWIZZLE4(SWIZZLE_Y,
SWIZZLE_Z,
SWIZZLE_W,
SWIZZLE_X))));
vec4_instruction *test_mov =
v->MOV(c, swizzle(src_reg(b), BRW_SWIZZLE4(SWIZZLE_Y,
SWIZZLE_Z,
SWIZZLE_W,
SWIZZLE_X)));
v->emit(test_mov);
copy_propagation(v);
EXPECT_EQ(test_mov->src[0].reg, a.reg);
EXPECT_EQ(test_mov->src[0].swizzle, BRW_SWIZZLE4(SWIZZLE_Z,
SWIZZLE_W,
SWIZZLE_X,
SWIZZLE_Y));
}
TEST_F(copy_propagation_test, test_swizzle_writemask)
{
dst_reg a = dst_reg(v, glsl_type::vec4_type);
dst_reg b = dst_reg(v, glsl_type::vec4_type);
dst_reg c = dst_reg(v, glsl_type::vec4_type);
v->emit(v->MOV(b, swizzle(src_reg(a), BRW_SWIZZLE4(SWIZZLE_X,
SWIZZLE_Y,
SWIZZLE_X,
SWIZZLE_Z))));
v->emit(v->MOV(writemask(a, WRITEMASK_XYZ), src_reg(1.0f)));
vec4_instruction *test_mov =
v->MOV(c, swizzle(src_reg(b), BRW_SWIZZLE4(SWIZZLE_W,
SWIZZLE_W,
SWIZZLE_W,
SWIZZLE_W)));
v->emit(test_mov);
copy_propagation(v);
/* should not copy propagate */
EXPECT_EQ(test_mov->src[0].reg, b.reg);
EXPECT_EQ(test_mov->src[0].swizzle, BRW_SWIZZLE4(SWIZZLE_W,
SWIZZLE_W,
SWIZZLE_W,
SWIZZLE_W));
}
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