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Merge pull request #1699 from jeffbolznv/buffer_reference_fold

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Handle buffer references vs 'const'
This commit is contained in:
John Kessenich 2019-03-04 13:41:27 -07:00 committed by GitHub
commit 9390154c55
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GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 1271 additions and 1099 deletions
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76
Test/baseResults/spv.bufferhandle16.frag.out Normal file
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@ -0,0 +1,76 @@
spv.bufferhandle16.frag
// Module Version 10000
// Generated by (magic number): 80007
// Id's are bound by 37
Capability Shader
Capability Int64
Capability CapabilityPhysicalStorageBufferAddressesEXT
Extension "SPV_EXT_physical_storage_buffer"
1: ExtInstImport "GLSL.std.450"
MemoryModel PhysicalStorageBuffer64EXT GLSL450
EntryPoint Fragment 4 "main"
ExecutionMode 4 OriginUpperLeft
Source GLSL 450
SourceExtension "GL_EXT_buffer_reference"
SourceExtension "GL_EXT_scalar_block_layout"
SourceExtension "GL_EXT_shader_explicit_arithmetic_types_int64"
Name 4 "main"
Name 8 "T1"
MemberName 8(T1) 0 "x"
Name 10 "a"
Name 14 "b"
Name 17 "c"
Name 23 "d"
Name 25 "e"
Name 36 "x"
MemberDecorate 8(T1) 0 Offset 0
Decorate 8(T1) Block
Decorate 10(a) DecorationAliasedPointerEXT
Decorate 14(b) DecorationAliasedPointerEXT
Decorate 17(c) DecorationAliasedPointerEXT
Decorate 23(d) DecorationAliasedPointerEXT
Decorate 25(e) DecorationAliasedPointerEXT
2: TypeVoid
3: TypeFunction 2
TypeForwardPointer 6 PhysicalStorageBufferEXT
7: TypeInt 32 1
8(T1): TypeStruct 7(int)
6: TypePointer PhysicalStorageBufferEXT 8(T1)
9: TypePointer Function 6(ptr)
11: TypeInt 64 0
12: 11(int64_t) Constant 4 0
15: 11(int64_t) Constant 5 0
18: TypeBool
19: 18(bool) ConstantTrue
26: 11(int64_t) Constant 6 0
28: 11(int64_t) Constant 7 0
31: 7(int) Constant 3
32: TypeInt 32 0
33: 32(int) Constant 3
34: TypeArray 7(int) 33
35: TypePointer Private 34
36(x): 35(ptr) Variable Private
4(main): 2 Function None 3
5: Label
10(a): 9(ptr) Variable Function
14(b): 9(ptr) Variable Function
17(c): 9(ptr) Variable Function
23(d): 9(ptr) Variable Function
25(e): 9(ptr) Variable Function
13: 6(ptr) Bitcast 12
Store 10(a) 13
16: 6(ptr) Bitcast 15
Store 14(b) 16
20: 6(ptr) Load 10(a)
21: 6(ptr) Load 14(b)
22: 6(ptr) Select 19 20 21
Store 17(c) 22
24: 6(ptr) Load 14(b)
Store 23(d) 24
27: 6(ptr) Bitcast 26
29: 6(ptr) Bitcast 28
30: 6(ptr) Select 19 27 29
Store 25(e) 30
Return
FunctionEnd

9
Test/baseResults/spv.bufferhandle17_Errors.frag.out Normal file
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@ -0,0 +1,9 @@
spv.bufferhandle17_Errors.frag
ERROR: 0:11: 'qualifier' : variables with reference type can't have qualifier 'const'
ERROR: 0:16: 'qualifier' : variables with reference type can't have qualifier 'const'
ERROR: 0:18: '==' : can't use with reference types
ERROR: 0:19: '!=' : can't use with reference types
ERROR: 4 compilation errors. No code generated.
SPIR-V is not generated for failed compile or link

23
Test/spv.bufferhandle16.frag Normal file
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@ -0,0 +1,23 @@
#version 450
#extension GL_EXT_shader_explicit_arithmetic_types_int64 : enable
#extension GL_EXT_buffer_reference : enable
#extension GL_EXT_scalar_block_layout : enable
layout(buffer_reference) buffer T1 {
int x;
};
layout(buffer_reference) buffer T2 {
int x;
};
const int s = int(uint64_t(T1(T2(uint64_t(3)))));
int x[s];
void main()
{
T1 a = T1(uint64_t(4)), b = T1(uint64_t(5));
T1 c = true ? a : b;
T1 d = (a,b);
T1 e = true ? T1(uint64_t(6)) : T1(uint64_t(7));
}

20
Test/spv.bufferhandle17_Errors.frag Normal file
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@ -0,0 +1,20 @@
#version 450
#extension GL_EXT_shader_explicit_arithmetic_types_int64 : enable
#extension GL_EXT_buffer_reference : enable
#extension GL_EXT_scalar_block_layout : enable
layout(buffer_reference) buffer T1 {
int x;
};
const T1 a = T1(uint64_t(2));
void main()
{
T1 b, c;
const T1 d = b;
b == c;
b != c;
}

1
glslang/Include/Types.h
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@ -1628,6 +1628,7 @@ public:
case EbtInt64:
case EbtUint64:
case EbtBool:
case EbtReference:
return true;
default:
return false;

4
glslang/MachineIndependent/Constant.cpp
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@ -941,6 +941,10 @@ TIntermTyped* TIntermConstantUnion::fold(TOperator op, const TType& returnType)
newConstArray[i].setDConst(unionArray[i].getDConst()); break;
case EOpConvDoubleToFloat:
newConstArray[i].setDConst(unionArray[i].getDConst()); break;
case EOpConvPtrToUint64:
case EOpConvUint64ToPtr:
case EOpConstructReference:
newConstArray[i].setU64Const(unionArray[i].getU64Const()); break;

22
glslang/MachineIndependent/Intermediate.cpp
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@ -725,6 +725,19 @@ TIntermTyped* TIntermediate::createConversion(TBasicType convertTo, TIntermTyped
return newNode;
}
// Convert a constant that is a reference type to a uint64_t constant plus a
// constructor instruction. This is needed because SPIR-V doesn't support
// OpConstant on pointer types.
TIntermTyped* TIntermediate::addConstantReferenceConversion(TIntermTyped* node)
{
if (node->getType().getBasicType() == EbtReference && node->getAsConstantUnion()) {
const TType &type = node->getType();
node = addBuiltInFunctionCall(node->getLoc(), EOpConvPtrToUint64, true, node, TType(EbtUint64));
node = addUnaryNode(EOpConstructReference, node, node->getLoc(), type);
}
return node;
}
TIntermTyped* TIntermediate::addConversion(TBasicType convertTo, TIntermTyped* node) const
{
return createConversion(convertTo, node);
@ -743,7 +756,7 @@ TIntermTyped* TIntermediate::addConversion(TBasicType convertTo, TIntermTyped* n
// Returns the converted pair of nodes.
// Returns <nullptr, nullptr> when there is no conversion.
std::tuple<TIntermTyped*, TIntermTyped*>
TIntermediate::addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* node1) const
TIntermediate::addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* node1)
{
if (!isConversionAllowed(op, node0) || !isConversionAllowed(op, node1))
return std::make_tuple(nullptr, nullptr);
@ -762,6 +775,9 @@ TIntermediate::addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* no
return std::make_tuple(node0, node1);
}
node0 = addConstantReferenceConversion(node0);
node1 = addConstantReferenceConversion(node1);
auto promoteTo = std::make_tuple(EbtNumTypes, EbtNumTypes);
switch (op) {
@ -876,11 +892,13 @@ TIntermediate::addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* no
//
// Return nullptr if a conversion can't be done.
//
TIntermTyped* TIntermediate::addConversion(TOperator op, const TType& type, TIntermTyped* node) const
TIntermTyped* TIntermediate::addConversion(TOperator op, const TType& type, TIntermTyped* node)
{
if (!isConversionAllowed(op, node))
return nullptr;
node = addConstantReferenceConversion(node);
// Otherwise, if types are identical, no problem
if (type == node->getType())
return node;

21
glslang/MachineIndependent/ParseHelper.cpp
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@ -4435,6 +4435,12 @@ void TParseContext::opaqueCheck(const TSourceLoc& loc, const TType& type, const
error(loc, "can't use with samplers or structs containing samplers", op, "");
}
void TParseContext::referenceCheck(const TSourceLoc& loc, const TType& type, const char* op)
{
if (containsFieldWithBasicType(type, EbtReference))
error(loc, "can't use with reference types", op, "");
}
void TParseContext::storage16BitAssignmentCheck(const TSourceLoc& loc, const TType& type, const char* op)
{
if (type.getBasicType() == EbtStruct && containsFieldWithBasicType(type, EbtFloat16))
@ -6290,6 +6296,9 @@ TIntermNode* TParseContext::declareVariable(const TSourceLoc& loc, TString& iden
#ifdef NV_EXTENSIONS
accStructNVCheck(loc, type, identifier);
#endif
if (type.getQualifier().storage == EvqConst && type.containsBasicType(EbtReference)) {
error(loc, "variables with reference type can't have qualifier 'const'", "qualifier", "");
}
if (type.getQualifier().storage != EvqUniform && type.getQualifier().storage != EvqBuffer) {
if (type.containsBasicType(EbtFloat16))
@ -6518,7 +6527,11 @@ TIntermNode* TParseContext::executeInitializer(const TSourceLoc& loc, TIntermTyp
// We either have a folded constant in getAsConstantUnion, or we have to use
// the initializer's subtree in the AST to represent the computation of a
// specialization constant.
assert(initializer->getAsConstantUnion() || initializer->getType().getQualifier().isSpecConstant());
// A third case arises when a reference type is made non-constant due to
// addConstantReferenceConversion, but reference types can't be const, so
// this is an error.
assert(initializer->getAsConstantUnion() || initializer->getType().getQualifier().isSpecConstant() ||
initializer->getType().getBasicType() == EbtReference);
if (initializer->getAsConstantUnion())
variable->setConstArray(initializer->getAsConstantUnion()->getConstArray());
else {
@ -6860,7 +6873,7 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
case EOpConstructUint64:
if (type.isScalar() && node->getType().getBasicType() == EbtReference) {
TIntermUnary* newNode = intermediate.addUnaryNode(EOpConvPtrToUint64, node, node->getLoc(), type);
TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvPtrToUint64, true, node, type);
return newNode;
}
// fall through
@ -6885,11 +6898,11 @@ TIntermTyped* TParseContext::constructBuiltIn(const TType& type, TOperator op, T
case EOpConstructReference:
// construct reference from reference
if (node->getType().getBasicType() == EbtReference) {
newNode = intermediate.addUnaryNode(EOpConstructReference, node, node->getLoc(), type);
newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConstructReference, true, node, type);
return newNode;
// construct reference from uint64
} else if (node->getType().isScalar() && node->getType().getBasicType() == EbtUint64) {
TIntermUnary* newNode = intermediate.addUnaryNode(EOpConvUint64ToPtr, node, node->getLoc(), type);
TIntermTyped* newNode = intermediate.addBuiltInFunctionCall(node->getLoc(), EOpConvUint64ToPtr, true, node, type);
return newNode;
} else {
return nullptr;

1
glslang/MachineIndependent/ParseHelper.h
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@ -370,6 +370,7 @@ public:
void nestedStructCheck(const TSourceLoc&);
void arrayObjectCheck(const TSourceLoc&, const TType&, const char* op);
void opaqueCheck(const TSourceLoc&, const TType&, const char* op);
void referenceCheck(const TSourceLoc&, const TType&, const char* op);
void storage16BitAssignmentCheck(const TSourceLoc&, const TType&, const char* op);
void specializationCheck(const TSourceLoc&, const TType&, const char* op);
void structTypeCheck(const TSourceLoc&, TPublicType&);

2
glslang/MachineIndependent/glslang.y
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@ -613,6 +613,7 @@ equality_expression
parseContext.arrayObjectCheck($2.loc, $1->getType(), "array comparison");
parseContext.opaqueCheck($2.loc, $1->getType(), "==");
parseContext.specializationCheck($2.loc, $1->getType(), "==");
parseContext.referenceCheck($2.loc, $1->getType(), "==");
$$ = parseContext.handleBinaryMath($2.loc, "==", EOpEqual, $1, $3);
if ($$ == 0)
$$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
@ -621,6 +622,7 @@ equality_expression
parseContext.arrayObjectCheck($2.loc, $1->getType(), "array comparison");
parseContext.opaqueCheck($2.loc, $1->getType(), "!=");
parseContext.specializationCheck($2.loc, $1->getType(), "!=");
parseContext.referenceCheck($2.loc, $1->getType(), "!=");
$$ = parseContext.handleBinaryMath($2.loc, "!=", EOpNotEqual, $1, $3);
if ($$ == 0)
$$ = parseContext.intermediate.addConstantUnion(false, $2.loc);

2184
glslang/MachineIndependent/glslang_tab.cpp
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File diff suppressed because it is too large Load Diff

5
glslang/MachineIndependent/localintermediate.h Executable file → Normal file
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@ -495,12 +495,13 @@ public:
TIntermSymbol* addSymbol(const TVariable&, const TSourceLoc&);
TIntermSymbol* addSymbol(const TType&, const TSourceLoc&);
TIntermSymbol* addSymbol(const TIntermSymbol&);
TIntermTyped* addConversion(TOperator, const TType&, TIntermTyped*) const;
std::tuple<TIntermTyped*, TIntermTyped*> addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* node1) const;
TIntermTyped* addConversion(TOperator, const TType&, TIntermTyped*);
std::tuple<TIntermTyped*, TIntermTyped*> addConversion(TOperator op, TIntermTyped* node0, TIntermTyped* node1);
TIntermTyped* addUniShapeConversion(TOperator, const TType&, TIntermTyped*);
TIntermTyped* addConversion(TBasicType convertTo, TIntermTyped* node) const;
void addBiShapeConversion(TOperator, TIntermTyped*& lhsNode, TIntermTyped*& rhsNode);
TIntermTyped* addShapeConversion(const TType&, TIntermTyped*);
TIntermTyped* addConstantReferenceConversion(TIntermTyped* node);
TIntermTyped* addBinaryMath(TOperator, TIntermTyped* left, TIntermTyped* right, TSourceLoc);
TIntermTyped* addAssign(TOperator op, TIntermTyped* left, TIntermTyped* right, TSourceLoc);
TIntermTyped* addIndex(TOperator op, TIntermTyped* base, TIntermTyped* index, TSourceLoc);

2
gtests/Spv.FromFile.cpp
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@ -272,6 +272,8 @@ INSTANTIATE_TEST_CASE_P(
"spv.bufferhandle13.frag",
"spv.bufferhandle14.frag",
"spv.bufferhandle15.frag",
"spv.bufferhandle16.frag",
"spv.bufferhandle17_Errors.frag",
"spv.bufferhandle2.frag",
"spv.bufferhandle3.frag",
"spv.bufferhandle4.frag",