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intel/compiler: Add unit tests for sat prop for different exec sizes

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The two new unit tests verify that propagating a saturate between
instructions of different exec sizes does not happen.

Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>
This commit is contained in:
Matt Turner
2019-04-18 10:11:54 -07:00
committed by Rafael Antognolli
parent 54d4d34b96
commit 8aae7a3998
1 changed files with 68 additions and 0 deletions
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68
src/intel/compiler/test_fs_saturate_propagation.cpp
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@@ -722,3 +722,71 @@ TEST_F(saturate_propagation_test, mul_neg_mov_sat_mov_sat)
EXPECT_EQ(BRW_OPCODE_MOV, instruction(block0, 2)->opcode);
EXPECT_TRUE(instruction(block0, 2)->saturate);
}
TEST_F(saturate_propagation_test, smaller_exec_size_consumer)
{
const fs_builder &bld = v->bld;
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);
bld.ADD(dst0, src0, src1);
set_saturate(true, bld.group(8, 0).MOV(dst1, dst0));
/* = Before =
*
* 0: add(16) 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, larger_exec_size_consumer)
{
const fs_builder &bld = v->bld;
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);
bld.group(8, 0).ADD(dst0, src0, src1);
set_saturate(true, bld.MOV(dst1, dst0));
/* = Before =
*
* 0: add(8) dst0 src0 src1
* 1: mov.sat(16) 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);
}