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SPIRV-Tools/test/opt/graphics_robust_access_test.cpp
David Neto af7410597e graphics robust access: use signed clamp (#3073) 
Access chain indices are always interpreted as signed integers.
So use signed clamp instead of unsigned clamp.  We must also
clamp to the max signed int for the index type.

Fixes #3072
2019-12-03 11:18:56 -05:00

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// Copyright (c) 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <array>
#include <sstream>
#include <string>
#include <vector>
#include "gmock/gmock.h"
#include "pass_fixture.h"
#include "pass_utils.h"
#include "source/opt/graphics_robust_access_pass.h"
namespace {
using namespace spvtools;
using opt::GraphicsRobustAccessPass;
using GraphicsRobustAccessTest = opt::PassTest<::testing::Test>;
// Test incompatible module, determined at module-level.
TEST_F(GraphicsRobustAccessTest, FailNotShader) {
const std::string text = R"(
; CHECK: Can only process Shader modules
OpCapability Kernel
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessVariablePointers) {
const std::string text = R"(
; CHECK: Can't process modules with VariablePointers capability
OpCapability VariablePointers
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessVariablePointersStorageBuffer) {
const std::string text = R"(
; CHECK: Can't process modules with VariablePointersStorageBuffer capability
OpCapability VariablePointersStorageBuffer
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessRuntimeDescriptorArrayEXT) {
const std::string text = R"(
; CHECK: Can't process modules with RuntimeDescriptorArrayEXT capability
OpCapability RuntimeDescriptorArrayEXT
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessPhysical32AddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel Physical32 OpenCL
OpCapability Shader
OpMemoryModel Physical32 OpenCL
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest, FailCantProcessPhysical64AddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel Physical64 OpenCL
OpCapability Shader
OpMemoryModel Physical64 OpenCL
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
TEST_F(GraphicsRobustAccessTest,
FailCantProcessPhysicalStorageBuffer64EXTAddressingModel) {
const std::string text = R"(
; CHECK: Addressing model must be Logical. Found OpMemoryModel PhysicalStorageBuffer64 GLSL450
OpCapability Shader
OpMemoryModel PhysicalStorageBuffer64EXT GLSL450
)";
SinglePassRunAndFail<GraphicsRobustAccessPass>(text);
}
// Test access chains
// Returns the names of access chain instructions handled by the pass.
// For the purposes of this pass, regular and in-bounds access chains are the
// same.)
std::vector<const char*> AccessChains() {
return {"OpAccessChain", "OpInBoundsAccessChain"};
}
std::string ShaderPreamble() {
return R"(
OpCapability Shader
OpMemoryModel Logical Simple
OpEntryPoint GLCompute %main "main"
)";
}
std::string ShaderPreamble(const std::vector<std::string>& names) {
std::ostringstream os;
os << ShaderPreamble();
for (auto& name : names) {
os << " OpName %" << name << " \"" << name << "\"\n";
}
return os.str();
}
std::string ShaderPreambleAC() {
return ShaderPreamble({"ac", "ptr_ty", "var"});
}
std::string ShaderPreambleAC(const std::vector<std::string>& names) {
auto names2 = names;
names2.push_back("ac");
names2.push_back("ptr_ty");
names2.push_back("var");
return ShaderPreamble(names2);
}
std::string DecoSSBO() {
return R"(
OpDecorate %ssbo_s BufferBlock
OpMemberDecorate %ssbo_s 0 Offset 0
OpMemberDecorate %ssbo_s 1 Offset 4
OpMemberDecorate %ssbo_s 2 Offset 16
OpDecorate %var DescriptorSet 0
OpDecorate %var Binding 0
)";
}
std::string TypesVoid() {
return R"(
%void = OpTypeVoid
%void_fn = OpTypeFunction %void
)";
}
std::string TypesInt() {
return R"(
%uint = OpTypeInt 32 0
%int = OpTypeInt 32 1
)";
}
std::string TypesFloat() {
return R"(
%float = OpTypeFloat 32
)";
}
std::string TypesShort() {
return R"(
%ushort = OpTypeInt 16 0
%short = OpTypeInt 16 1
)";
}
std::string TypesLong() {
return R"(
%ulong = OpTypeInt 64 0
%long = OpTypeInt 64 1
)";
}
std::string MainPrefix() {
return R"(
%main = OpFunction %void None %void_fn
%entry = OpLabel
)";
}
std::string MainSuffix() {
return R"(
OpReturn
OpFunctionEnd
)";
}
std::string ACCheck(const std::string& access_chain_inst,
const std::string& original,
const std::string& transformed) {
return "\n ; CHECK: %ac = " + access_chain_inst + " %ptr_ty %var" +
(transformed.empty() ? "" : " ") + transformed +
"\n ; CHECK-NOT: " + access_chain_inst +
"\n ; CHECK-NEXT: OpReturn"
"\n %ac = " +
access_chain_inst + " %ptr_ty %var " + (original.empty() ? "" : " ") +
original + "\n";
}
std::string ACCheckFail(const std::string& access_chain_inst,
const std::string& original,
const std::string& transformed) {
return "\n ; CHECK: %ac = " + access_chain_inst + " %ptr_ty %var" +
(transformed.empty() ? "" : " ") + transformed +
"\n ; CHECK-NOT: " + access_chain_inst +
"\n ; CHECK-NOT: OpReturn"
"\n %ac = " +
access_chain_inst + " %ptr_ty %var " + (original.empty() ? "" : " ") +
original + "\n";
}
// Access chain into:
// Vector
// Vector sizes 2, 3, 4
// Matrix
// Matrix columns 2, 4
// Component is vector 2, 4
// Array
// Struct
// TODO(dneto): RuntimeArray
TEST_F(GraphicsRobustAccessTest, ACVectorLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%uvec2 = OpTypeVector %uint 2
%var_ty = OpTypePointer Function %uvec2
%ptr_ty = OpTypePointer Function %uint
%uint_0 = OpConstant %uint 0
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_0", "%uint_0")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%uint_3 = OpConstant %uint 3
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_3", "%uint_3")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorExcessConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%uint_4 = OpConstant %uint 4
)"
<< MainPrefix() << R"(
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%uint_4", "%int_3")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%int_n1 = OpConstant %int -1
)"
<< MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%int_n1", "%int_0")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
// Like the previous test, but ensures the pass knows how to modify an index
// which does not come first in the access chain.
TEST_F(GraphicsRobustAccessTest, ACVectorInArrayNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%uint_1 = OpConstant %uint 1
%uint_2 = OpConstant %uint 2
%arr = OpTypeArray %v4uint %uint_2
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %uint
%int_n1 = OpConstant %int -1
)"
<< MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_1 %int_n1", "%uint_1 %int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt() << R"(
%v4uint = OpTypeVector %uint 4
%var_ty = OpTypePointer Function %v4uint
%ptr_ty = OpTypePointer Function %uint
%i = OpUndef %int)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralShortClamped) {
// Show that signed 16 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort() <<
R"(
%v4short = OpTypeVector %short 4
%var_ty = OpTypePointer Function %v4short
%ptr_ty = OpTypePointer Function %short
%i = OpUndef %short)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %short_3 = OpConstant %short 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %short %[[GLSLSTD450]] SClamp %i %short_0 %short_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralUShortClamped) {
// Show that unsigned 16 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort() <<
R"(
%v4ushort = OpTypeVector %ushort 4
%var_ty = OpTypePointer Function %v4ushort
%ptr_ty = OpTypePointer Function %ushort
%i = OpUndef %ushort)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %short_3 = OpConstant %short 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ushort %[[GLSLSTD450]] SClamp %i %short_0 %short_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralLongClamped) {
// Show that signed 64 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesLong() <<
R"(
%v4long = OpTypeVector %long 4
%var_ty = OpTypePointer Function %v4long
%ptr_ty = OpTypePointer Function %long
%i = OpUndef %long)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_3 = OpConstant %long 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %long_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACVectorGeneralULongClamped) {
// Show that unsigned 64 bit integers are clamped as well.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesLong() <<
R"(
%v4ulong = OpTypeVector %ulong 4
%var_ty = OpTypePointer Function %v4ulong
%ptr_ty = OpTypePointer Function %ulong
%i = OpUndef %ulong)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-NOT: = OpTypeInt 32
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_3 = OpConstant %long 3
; CHECK-NOT: = OpTypeInt 32
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %long_3
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_0 = OpConstant %uint 0
%uint_1 = OpConstant %uint 1
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_0 %uint_1", "%uint_0 %uint_1")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%uint_3 = OpConstant %uint 3
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_3 %uint_1", "%uint_3 %uint_1")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixExcessConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%uint_4 = OpConstant %uint 4
)" << MainPrefix() << R"(
; CHECK: %int_3 = OpConstant %int 3
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_4 %uint_1", "%int_3 %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixNegativeConstantClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%int_n1 = OpConstant %int -1
)" << MainPrefix() << R"(
; CHECK: %int_0 = OpConstant %int 0
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_n1 %uint_1", "%int_0 %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACMatrixGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%v2float = OpTypeVector %float 2
%mat4v2float = OpTypeMatrix %v2float 4
%var_ty = OpTypePointer Function %mat4v2float
%ptr_ty = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_3
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i %uint_1", "%[[clamp]] %uint_1") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayLeastInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%int_0 = OpConstant %int 0
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_0", "%int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayMostInboundConstantUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%int_199 = OpConstant %int 199
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_199", "%int_199") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralShortIndexUIntBoundsClamped) {
// Index is signed short, array bounds overflows the index type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%uint_70000 = OpConstant %uint 70000 ; overflows 16bits
%arr = OpTypeArray %float %uint_70000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %short
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_69999 = OpConstant %int 69999
; CHECK: OpLabel
; CHECK: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %int_0 %int_69999
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralUShortIndexIntBoundsClamped) {
// Index is unsigned short, array bounds overflows the index type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%int_70000 = OpConstant %int 70000 ; overflows 16bits
%arr = OpTypeArray %float %int_70000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ushort
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_69999 = OpConstant %int 69999
; CHECK: OpLabel
; CHECK: %[[i_ext:\w+]] = OpUConvert %uint %i
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %int_0 %int_69999
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralUIntIndexShortBoundsClamped) {
// Signed int index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%short_200 = OpConstant %short 200
%arr = OpTypeArray %float %short_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %uint
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralIntIndexUShortBoundsClamped) {
// Unsigned int index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesShort() << TypesFloat() << R"(
%ushort_200 = OpConstant %ushort 200
%arr = OpTypeArray %float %ushort_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_199 = OpConstant %int 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralLongIndexUIntBoundsClamped) {
// Signed long index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong() << TypesFloat() << R"(
%uint_200 = OpConstant %uint 200
%arr = OpTypeArray %float %uint_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %long
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_199 = OpConstant %long 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %long_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayGeneralULongIndexIntBoundsClamped) {
// Unsigned long index i is wider than the array bounds type.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong() << TypesFloat() << R"(
%int_200 = OpConstant %int 200
%arr = OpTypeArray %float %int_200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ulong
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_199 = OpConstant %long 199
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %long_199
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralShortIndeArrayBiggerThanShortMaxClipsToShortIntMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesShort()
<< TypesInt() << TypesFloat() << R"(
%uint_50000 = OpConstant %uint 50000
%arr = OpTypeArray %float %uint_50000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ushort
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %short_0 = OpConstant %short 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %short 32767
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ushort %[[GLSLSTD450]] SClamp %i %short_0 %[[intmax]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralIntIndexArrayBiggerThanIntMaxClipsToSignedIntMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%uint_3000000000 = OpConstant %uint 3000000000
%arr = OpTypeArray %float %uint_3000000000
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %uint
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %int_0 %[[intmax]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%i", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACArrayGeneralLongIndexArrayBiggerThanLongMaxClipsToSignedLongMax) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64\n"
<< ShaderPreambleAC({"i"}) << TypesVoid() << TypesInt()
<< TypesLong()
<< TypesFloat()
// 2^63 == 9,223,372,036,854,775,807
<< R"(
%ulong_9223372036854775999 = OpConstant %ulong 9223372036854775999
%arr = OpTypeArray %float %ulong_9223372036854775999
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %ulong
)"
<< MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %long 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %long_0 %[[intmax]]
%var = OpVariable %var_ty Function)" << ACCheck(ac, "%i", "%[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArraySpecIdSizedAlwaysClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"spec200"}) << R"(
OpDecorate %spec200 SpecId 0 )" << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%spec200 = OpSpecConstant %int 200
%arr = OpTypeArray %float %spec200
%var_ty = OpTypePointer Function %arr
%ptr_ty = OpTypePointer Function %float
%uint_5 = OpConstant %uint 5
)" << MainPrefix() << R"(
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %[[uint_intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[max:\w+]] = OpISub %uint %spec200 %uint_1
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[uint_intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %uint_5 %uint_0 %[[smin]]
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%uint_5", "%[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructLeastUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%int_0 = OpConstant %int 0
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_0", "%int_0") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructMostUntouched) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%int_2 = OpConstant %int 2
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function)"
<< ACCheck(ac, "%int_2", "%int_2") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACStructSpecConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "spec200"})
<< "OpDecorate %spec200 SpecId 0\n"
<<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%spec200 = OpSpecConstant %int 200
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %spec200 = OpSpecConstant %int 200
)"
<< ACCheckFail(ac, "%spec200", "%spec200") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructFloatConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct"}) <<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%float_2 = OpConstant %float 2
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %float_2 = OpConstant %float 2
)"
<< ACCheckFail(ac, "%float_2", "%float_2") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructNonConstantFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) <<
TypesVoid() << TypesInt() << TypesFloat() << R"(
%float_2 = OpConstant %float 2
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpUndef %int
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index into struct is not a constant integer
; CHECK-SAME: %i = OpUndef %int
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructExcessFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpConstant %int 4
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index 4 is out of bounds for struct type:
; CHECK-SAME: %struct = OpTypeStruct %float %float %float
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACStructNegativeFail) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"struct", "i"}) << TypesVoid() << TypesInt()
<< TypesFloat() << R"(
%struct = OpTypeStruct %float %float %float
%var_ty = OpTypePointer Function %struct
%ptr_ty = OpTypePointer Function %float
%i = OpConstant %int -1
)" << MainPrefix() << R"(
%var = OpVariable %var_ty Function
; CHECK: Member index -1 is out of bounds for struct type:
; CHECK-SAME: %struct = OpTypeStruct %float %float %float
)"
<< ACCheckFail(ac, "%i", "%i") << MainSuffix();
SinglePassRunAndFail<GraphicsRobustAccessPass>(shaders.str());
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayLeastInboundClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC() << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %uint %uint %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_0 = OpConstant %int 0
%int_2 = OpConstant %int 2
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_1 = OpConstant %int 1
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %int_0 %int_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %int_0", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralShortIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesShort() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %short %short %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%short_2 = OpConstant %short 2
%i = OpUndef %short
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK: %uint = OpTypeInt 32 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK-DAG: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK-DAG: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%short_2 %i", "%short_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralUShortIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int16\n"
<< ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesShort() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %short %short %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%short_2 = OpConstant %short 2
%i = OpUndef %ushort
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK: %uint = OpTypeInt 32 0
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK-DAG: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK-DAG: %[[i_ext:\w+]] = OpSConvert %uint %i
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %[[i_ext]] %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%short_2 %i", "%short_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralIntIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_1 = OpConstant %int 1
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralUIntIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i"}) << "OpDecorate %rtarr ArrayStride 4 "
<< DecoSSBO() << TypesVoid() << TypesInt() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %uint
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %uint_1 = OpConstant %uint 1
; CHECK-DAG: %uint_0 = OpConstant %uint 0
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %uint 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %uint %[[arrlen]] %uint_1
; CHECK: %[[smin:\w+]] = OpExtInst %uint %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %uint %[[GLSLSTD450]] SClamp %i %uint_0 %[[smin]]
)"
<< MainPrefix() << ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralLongIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64" << ShaderPreambleAC({"i"})
<< "OpDecorate %rtarr ArrayStride 4 " << DecoSSBO() << TypesVoid()
<< TypesInt() << TypesLong() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %long
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %long_0 = OpConstant %long 0
; CHECK-DAG: %long_1 = OpConstant %long 1
; CHECK-DAG: %[[longmax:\w+]] = OpConstant %long 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[arrlen_ext:\w+]] = OpUConvert %ulong %[[arrlen]]
; CHECK: %[[max:\w+]] = OpISub %long %[[arrlen_ext]] %long_1
; CHECK: %[[smin:\w+]] = OpExtInst %long %[[GLSLSTD450]] UMin %[[max]] %[[longmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %long %[[GLSLSTD450]] SClamp %i %long_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayGeneralULongIndexClamped) {
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << "OpCapability Int64" << ShaderPreambleAC({"i"})
<< "OpDecorate %rtarr ArrayStride 4 " << DecoSSBO() << TypesVoid()
<< TypesInt() << TypesLong() << TypesFloat() << R"(
%rtarr = OpTypeRuntimeArray %float
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_2 = OpConstant %int 2
%i = OpUndef %ulong
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %ulong_0 = OpConstant %ulong 0
; CHECK-DAG: %ulong_1 = OpConstant %ulong 1
; CHECK-DAG: %[[longmax:\w+]] = OpConstant %ulong 9223372036854775807
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[arrlen_ext:\w+]] = OpUConvert %ulong %[[arrlen]]
; CHECK: %[[max:\w+]] = OpISub %ulong %[[arrlen_ext]] %ulong_1
; CHECK: %[[smin:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] UMin %[[max]] %[[longmax]]
; CHECK: %[[clamp:\w+]] = OpExtInst %ulong %[[GLSLSTD450]] SClamp %i %ulong_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i", "%int_2 %[[clamp]]") << MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACRTArrayStructVectorElem) {
// The point of this test is that the access chain can have indices past the
// index into the runtime array. For good measure, the index into the final
// struct is out of bounds. We have to clamp that index too.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%var_ty = OpTypePointer Uniform %ssbo_s
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %var 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %int_3
)" << MainPrefix()
<< ACCheck(ac, "%int_2 %i %int_1 %j",
"%int_2 %[[clamp_i]] %int_1 %[[clamp_j]]")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACArrayRTArrayStructVectorElem) {
// Now add an additional level of arrays around the Block-decorated struct.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "ssbo_s"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_17 = OpConstant %int 17
%i = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %[[ssbo_p:\w+]] = OpTypePointer Uniform %ssbo_s
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; This access chain is manufatured only so we can compute the array length.
; Note that the %int_9 is already clamped
; CHECK: %[[ssbo_base:\w+]] = )" << ac
<< R"( %[[ssbo_p]] %var %int_9
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %[[ssbo_base]] 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %[[smin]]
)" << MainPrefix()
<< ACCheck(ac, "%int_17 %int_2 %i %int_1 %int_2",
"%int_9 %int_2 %[[clamp_i]] %int_1 %int_2")
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest, ACSplitACArrayRTArrayStructVectorElem) {
// Split the address calculation across two access chains. Force
// the transform to walk up the access chains to find the base variable.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j", "k", "ssbo_s", "ssbo_pty",
"rtarr_pty", "ac_ssbo", "ac_rtarr"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ssbo_pty = OpTypePointer Uniform %ssbo_s
%rtarr_pty = OpTypePointer Uniform %rtarr
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
%k = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_9
; CHECK: %ac_ssbo = )" << ac
<< R"( %ssbo_pty %var %[[clamp_i]]
; CHECK: %ac_rtarr = )"
<< ac << R"( %rtarr_pty %ac_ssbo %int_2
; This is the interesting bit. This array length is needed for an OpAccessChain
; computing %ac, but the algorithm had to track back through %ac_rtarr's
; definition to find the base pointer %ac_ssbo.
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %ac_ssbo 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %[[smin]]
; CHECK: %[[clamp_k:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %k %int_0 %int_3
; CHECK: %ac = )" << ac
<< R"( %ptr_ty %ac_rtarr %[[clamp_j]] %int_1 %[[clamp_k]]
; CHECK-NOT: AccessChain
)" << MainPrefix()
<< "%ac_ssbo = " << ac << " %ssbo_pty %var %i\n"
<< "%ac_rtarr = " << ac << " %rtarr_pty %ac_ssbo %int_2\n"
<< "%ac = " << ac << " %ptr_ty %ac_rtarr %j %int_1 %k\n"
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
TEST_F(GraphicsRobustAccessTest,
ACSplitACArrayRTArrayStructVectorElemAcrossBasicBlocks) {
// Split the address calculation across two access chains. Force
// the transform to walk up the access chains to find the base variable.
// This time, put the different access chains in different basic blocks.
// This sanity checks that we keep the instruction-to-block mapping
// consistent.
for (auto* ac : AccessChains()) {
std::ostringstream shaders;
shaders << ShaderPreambleAC({"i", "j", "k", "bb1", "bb2", "ssbo_s",
"ssbo_pty", "rtarr_pty", "ac_ssbo",
"ac_rtarr"})
<< "OpDecorate %rtarr ArrayStride 32\n"
<< DecoSSBO() << "OpMemberDecorate %rtelem 0 Offset 0\n"
<< "OpMemberDecorate %rtelem 1 Offset 16\n"
<< TypesVoid() << TypesInt() << TypesFloat() << R"(
%v4float = OpTypeVector %float 4
%rtelem = OpTypeStruct %v4float %v4float
%rtarr = OpTypeRuntimeArray %rtelem
%ssbo_s = OpTypeStruct %int %int %rtarr
%arr_size = OpConstant %int 10
%arr_ssbo = OpTypeArray %ssbo_s %arr_size
%var_ty = OpTypePointer Uniform %arr_ssbo
%ssbo_pty = OpTypePointer Uniform %ssbo_s
%rtarr_pty = OpTypePointer Uniform %rtarr
%ptr_ty = OpTypePointer Uniform %float
%var = OpVariable %var_ty Uniform
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%i = OpUndef %int
%j = OpUndef %int
%k = OpUndef %int
; CHECK: %[[GLSLSTD450:\w+]] = OpExtInstImport "GLSL.std.450"
; CHECK-DAG: %int_0 = OpConstant %int 0
; CHECK-DAG: %int_9 = OpConstant %int 9
; CHECK-DAG: %int_3 = OpConstant %int 3
; CHECK-DAG: %[[intmax:\w+]] = OpConstant %int 2147483647
; CHECK: OpLabel
; CHECK: %[[clamp_i:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %i %int_0 %int_9
; CHECK: %ac_ssbo = )" << ac
<< R"( %ssbo_pty %var %[[clamp_i]]
; CHECK: %bb1 = OpLabel
; CHECK: %ac_rtarr = )"
<< ac << R"( %rtarr_pty %ac_ssbo %int_2
; CHECK: %bb2 = OpLabel
; This is the interesting bit. This array length is needed for an OpAccessChain
; computing %ac, but the algorithm had to track back through %ac_rtarr's
; definition to find the base pointer %ac_ssbo.
; CHECK: %[[arrlen:\w+]] = OpArrayLength %uint %ac_ssbo 2
; CHECK: %[[max:\w+]] = OpISub %int %[[arrlen]] %int_1
; CHECK: %[[smin:\w+]] = OpExtInst %int %[[GLSLSTD450]] UMin %[[max]] %[[intmax]]
; CHECK: %[[clamp_j:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %j %int_0 %[[smin]]
; CHECK: %[[clamp_k:\w+]] = OpExtInst %int %[[GLSLSTD450]] SClamp %k %int_0 %int_3
; CHECK: %ac = )" << ac
<< R"( %ptr_ty %ac_rtarr %[[clamp_j]] %int_1 %[[clamp_k]]
; CHECK-NOT: AccessChain
)" << MainPrefix()
<< "%ac_ssbo = " << ac << " %ssbo_pty %var %i\n"
<< "OpBranch %bb1\n%bb1 = OpLabel\n"
<< "%ac_rtarr = " << ac << " %rtarr_pty %ac_ssbo %int_2\n"
<< "OpBranch %bb2\n%bb2 = OpLabel\n"
<< "%ac = " << ac << " %ptr_ty %ac_rtarr %j %int_1 %k\n"
<< MainSuffix();
SinglePassRunAndMatch<GraphicsRobustAccessPass>(shaders.str(), true);
}
}
// TODO(dneto): Test access chain index wider than 64 bits?
// TODO(dneto): Test struct access chain index wider than 64 bits?
// TODO(dneto): OpImageTexelPointer
// - all Dim types: 1D 2D Cube 3D Rect Buffer
// - all Dim types that can be arrayed: 1D 2D 3D
// - sample index: set to 0 if not multisampled
// - Dim (2D, Cube Rect} with multisampling
// -1 0 max excess
// TODO(dneto): Test OpImageTexelPointer with coordinate component index other
// than 32 bits.
} // namespace
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