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aco/wave32: fix comparison optimizations

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Previously, they weren't done in wave32.

Totals from affected shaders:
SGPRS: 507726 -> 508006 (0.06 %)
VGPRS: 450340 -> 450268 (-0.02 %)
Spilled SGPRs: 298 -> 298 (0.00 %)
Spilled VGPRs: 0 -> 0 (0.00 %)
Code Size: 39689708 -> 39384488 (-0.77 %) bytes
Max Waves: 39631 -> 39636 (0.01 %)
Instructions: 7865919 -> 7793650 (-0.92 %)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
This commit is contained in:
Rhys Perry
2019-12-03 13:37:49 +00:00
committed by Timur Kristóf
parent 4dd08b710b
commit 6ff92f3d68
1 changed files with 16 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/amd/compiler/aco_optimizer.cpp
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@@ -1164,11 +1164,13 @@ Instruction *follow_operand(opt_ctx &ctx, Operand op, bool ignore_uses=false)
* s_and_b64(eq(a, a), eq(b, b)) -> v_cmp_o_f32(a, b) */
bool combine_ordering_test(opt_ctx &ctx, aco_ptr<Instruction>& instr)
{
if (instr->opcode != aco_opcode::s_or_b64 && instr->opcode != aco_opcode::s_and_b64)
if (instr->definitions[0].regClass() != ctx.program->lane_mask)
return false;
if (instr->definitions[1].isTemp() && ctx.uses[instr->definitions[1].tempId()])
return false;
bool is_or = instr->opcode == aco_opcode::s_or_b64 || instr->opcode == aco_opcode::s_or_b32;
bool neg[2] = {false, false};
bool abs[2] = {false, false};
bool opsel[2] = {false, false};
@@ -1180,8 +1182,7 @@ bool combine_ordering_test(opt_ctx &ctx, aco_ptr<Instruction>& instr)
if (!op_instr[i])
return false;
aco_opcode expected_cmp = instr->opcode == aco_opcode::s_or_b64 ?
aco_opcode::v_cmp_neq_f32 : aco_opcode::v_cmp_eq_f32;
aco_opcode expected_cmp = is_or ? aco_opcode::v_cmp_neq_f32 : aco_opcode::v_cmp_eq_f32;
if (op_instr[i]->opcode != expected_cmp)
return false;
@@ -1213,8 +1214,7 @@ bool combine_ordering_test(opt_ctx &ctx, aco_ptr<Instruction>& instr)
decrease_uses(ctx, op_instr[0]);
decrease_uses(ctx, op_instr[1]);
aco_opcode new_op = instr->opcode == aco_opcode::s_or_b64 ?
aco_opcode::v_cmp_u_f32 : aco_opcode::v_cmp_o_f32;
aco_opcode new_op = is_or ? aco_opcode::v_cmp_u_f32 : aco_opcode::v_cmp_o_f32;
Instruction *new_instr;
if (neg[0] || neg[1] || abs[0] || abs[1] || opsel[0] || opsel[1]) {
VOP3A_instruction *vop3 = create_instruction<VOP3A_instruction>(new_op, asVOP3(Format::VOPC), 2, 1);
@@ -1243,13 +1243,13 @@ bool combine_ordering_test(opt_ctx &ctx, aco_ptr<Instruction>& instr)
* s_and_b64(v_cmp_o_f32(a, b), cmp(a, b)) -> get_ordered(cmp)(a, b) */
bool combine_comparison_ordering(opt_ctx &ctx, aco_ptr<Instruction>& instr)
{
if (instr->opcode != aco_opcode::s_or_b64 && instr->opcode != aco_opcode::s_and_b64)
if (instr->definitions[0].regClass() != ctx.program->lane_mask)
return false;
if (instr->definitions[1].isTemp() && ctx.uses[instr->definitions[1].tempId()])
return false;
aco_opcode expected_nan_test = instr->opcode == aco_opcode::s_or_b64 ?
aco_opcode::v_cmp_u_f32 : aco_opcode::v_cmp_o_f32;
bool is_or = instr->opcode == aco_opcode::s_or_b64 || instr->opcode == aco_opcode::s_or_b32;
aco_opcode expected_nan_test = is_or ? aco_opcode::v_cmp_u_f32 : aco_opcode::v_cmp_o_f32;
Instruction *nan_test = follow_operand(ctx, instr->operands[0], true);
Instruction *cmp = follow_operand(ctx, instr->operands[1], true);
@@ -1283,8 +1283,7 @@ bool combine_comparison_ordering(opt_ctx &ctx, aco_ptr<Instruction>& instr)
decrease_uses(ctx, nan_test);
decrease_uses(ctx, cmp);
aco_opcode new_op = instr->opcode == aco_opcode::s_or_b64 ?
get_unordered(cmp->opcode) : get_ordered(cmp->opcode);
aco_opcode new_op = is_or ? get_unordered(cmp->opcode) : get_ordered(cmp->opcode);
Instruction *new_instr;
if (cmp->isVOP3()) {
VOP3A_instruction *new_vop3 = create_instruction<VOP3A_instruction>(new_op, asVOP3(Format::VOPC), 2, 1);
@@ -1314,19 +1313,20 @@ bool combine_comparison_ordering(opt_ctx &ctx, aco_ptr<Instruction>& instr)
* s_and_b64(v_cmp_eq_f32(a, a), cmp(a, #b)) and b is not NaN -> get_ordered(cmp)(a, b) */
bool combine_constant_comparison_ordering(opt_ctx &ctx, aco_ptr<Instruction>& instr)
{
if (instr->opcode != aco_opcode::s_or_b64 && instr->opcode != aco_opcode::s_and_b64)
if (instr->definitions[0].regClass() != ctx.program->lane_mask)
return false;
if (instr->definitions[1].isTemp() && ctx.uses[instr->definitions[1].tempId()])
return false;
bool is_or = instr->opcode == aco_opcode::s_or_b64 || instr->opcode == aco_opcode::s_or_b32;
Instruction *nan_test = follow_operand(ctx, instr->operands[0], true);
Instruction *cmp = follow_operand(ctx, instr->operands[1], true);
if (!nan_test || !cmp)
return false;
aco_opcode expected_nan_test = instr->opcode == aco_opcode::s_or_b64 ?
aco_opcode::v_cmp_neq_f32 : aco_opcode::v_cmp_eq_f32;
aco_opcode expected_nan_test = is_or ? aco_opcode::v_cmp_neq_f32 : aco_opcode::v_cmp_eq_f32;
if (cmp->opcode == expected_nan_test)
std::swap(nan_test, cmp);
else if (nan_test->opcode != expected_nan_test)
@@ -1379,8 +1379,7 @@ bool combine_constant_comparison_ordering(opt_ctx &ctx, aco_ptr<Instruction>& in
decrease_uses(ctx, nan_test);
decrease_uses(ctx, cmp);
aco_opcode new_op = instr->opcode == aco_opcode::s_or_b64 ?
get_unordered(cmp->opcode) : get_ordered(cmp->opcode);
aco_opcode new_op = is_or ? get_unordered(cmp->opcode) : get_ordered(cmp->opcode);
Instruction *new_instr;
if (cmp->isVOP3()) {
VOP3A_instruction *new_vop3 = create_instruction<VOP3A_instruction>(new_op, asVOP3(Format::VOPC), 2, 1);
@@ -2233,9 +2232,8 @@ void combine_instruction(opt_ctx &ctx, Block& block, aco_ptr<Instruction>& instr
} else if (instr->opcode == aco_opcode::s_not_b64) {
if (combine_inverse_comparison(ctx, instr)) ;
else combine_salu_not_bitwise(ctx, instr);
} else if (instr->opcode == aco_opcode::s_and_b32 || instr->opcode == aco_opcode::s_or_b32) {
combine_salu_n2(ctx, instr);
} else if (instr->opcode == aco_opcode::s_and_b64 || instr->opcode == aco_opcode::s_or_b64) {
} else if (instr->opcode == aco_opcode::s_and_b32 || instr->opcode == aco_opcode::s_or_b32 ||
instr->opcode == aco_opcode::s_and_b64 || instr->opcode == aco_opcode::s_or_b64) {
if (combine_ordering_test(ctx, instr)) ;
else if (combine_comparison_ordering(ctx, instr)) ;
else if (combine_constant_comparison_ordering(ctx, instr)) ;