Skip to content

Commit f5ef51f

Browse files
hekotahekota
authored
Revert "[HLSL] Implement default constant buffer $Globals (#125807)"
This reverts commit 776cdda.
1 parent 7c2ebe5 commit f5ef51f

File tree

10 files changed

+41
-240
lines changed

10 files changed

+41
-240
lines changed

‎clang/include/clang/AST/Decl.h

Lines changed: 0 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -5045,11 +5045,6 @@ class HLSLBufferDecl final : public NamedDecl, public DeclContext {
50455045
// LayoutStruct - Layout struct for the buffer
50465046
CXXRecordDecl *LayoutStruct;
50475047

5048-
// For default (implicit) constant buffer, a lisf of references of global
5049-
// decls that belong to the buffer. The decls are already parented by the
5050-
// translation unit context.
5051-
SmallVector<Decl *> DefaultBufferDecls;
5052-
50535048
HLSLBufferDecl(DeclContext *DC, bool CBuffer, SourceLocation KwLoc,
50545049
IdentifierInfo *ID, SourceLocation IDLoc,
50555050
SourceLocation LBrace);
@@ -5059,8 +5054,6 @@ class HLSLBufferDecl final : public NamedDecl, public DeclContext {
50595054
bool CBuffer, SourceLocation KwLoc,
50605055
IdentifierInfo *ID, SourceLocation IDLoc,
50615056
SourceLocation LBrace);
5062-
static HLSLBufferDecl *CreateDefaultCBuffer(ASTContext &C,
5063-
DeclContext *LexicalParent);
50645057
static HLSLBufferDecl *CreateDeserialized(ASTContext &C, GlobalDeclID ID);
50655058

50665059
SourceRange getSourceRange() const override LLVM_READONLY {
@@ -5075,7 +5068,6 @@ class HLSLBufferDecl final : public NamedDecl, public DeclContext {
50755068
bool hasValidPackoffset() const { return HasValidPackoffset; }
50765069
const CXXRecordDecl *getLayoutStruct() const { return LayoutStruct; }
50775070
void addLayoutStruct(CXXRecordDecl *LS);
5078-
void addDefaultBufferDecl(Decl *D);
50795071

50805072
// Implement isa/cast/dyncast/etc.
50815073
static bool classof(const Decl *D) { return classofKind(D->getKind()); }
@@ -5087,28 +5079,6 @@ class HLSLBufferDecl final : public NamedDecl, public DeclContext {
50875079
return static_cast<HLSLBufferDecl *>(const_cast<DeclContext *>(DC));
50885080
}
50895081

5090-
// Iterator for the buffer decls. For constant buffers explicitly declared
5091-
// with `cbuffer` keyword this will the list of decls parented by this
5092-
// HLSLBufferDecl (equal to `decls()`).
5093-
// For implicit $Globals buffer this will be the list of default buffer
5094-
// declarations stored in DefaultBufferDecls plus the implicit layout
5095-
// struct (the only child of HLSLBufferDecl in this case).
5096-
//
5097-
// The iterator uses llvm::concat_iterator to concatenate the lists
5098-
// `decls()` and `DefaultBufferDecls`. For non-default buffers
5099-
// `DefaultBufferDecls` is always empty.
5100-
using buffer_decl_iterator =
5101-
llvm::concat_iterator<Decl *const, SmallVector<Decl *>::const_iterator,
5102-
decl_iterator>;
5103-
using buffer_decl_range = llvm::iterator_range<buffer_decl_iterator>;
5104-
5105-
buffer_decl_range buffer_decls() const {
5106-
return buffer_decl_range(buffer_decls_begin(), buffer_decls_end());
5107-
}
5108-
buffer_decl_iterator buffer_decls_begin() const;
5109-
buffer_decl_iterator buffer_decls_end() const;
5110-
bool buffer_decls_empty();
5111-
51125082
friend class ASTDeclReader;
51135083
friend class ASTDeclWriter;
51145084
};

‎clang/include/clang/Sema/SemaHLSL.h

Lines changed: 1 addition & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -105,13 +105,13 @@ class SemaHLSL : public SemaBase {
105105
HLSLParamModifierAttr::Spelling Spelling);
106106
void ActOnTopLevelFunction(FunctionDecl *FD);
107107
void ActOnVariableDeclarator(VarDecl *VD);
108-
void ActOnEndOfTranslationUnit(TranslationUnitDecl *TU);
109108
void CheckEntryPoint(FunctionDecl *FD);
110109
void CheckSemanticAnnotation(FunctionDecl *EntryPoint, const Decl *Param,
111110
const HLSLAnnotationAttr *AnnotationAttr);
112111
void DiagnoseAttrStageMismatch(
113112
const Attr *A, llvm::Triple::EnvironmentType Stage,
114113
std::initializer_list<llvm::Triple::EnvironmentType> AllowedStages);
114+
void DiagnoseAvailabilityViolations(TranslationUnitDecl *TU);
115115

116116
QualType handleVectorBinOpConversion(ExprResult &LHS, ExprResult &RHS,
117117
QualType LHSType, QualType RHSType,
@@ -168,16 +168,11 @@ class SemaHLSL : public SemaBase {
168168
// List of all resource bindings
169169
ResourceBindings Bindings;
170170

171-
// default constant buffer $Globals
172-
HLSLBufferDecl *DefaultCBuffer;
173-
174171
private:
175172
void collectResourceBindingsOnVarDecl(VarDecl *D);
176173
void collectResourceBindingsOnUserRecordDecl(const VarDecl *VD,
177174
const RecordType *RT);
178175
void processExplicitBindingsOnDecl(VarDecl *D);
179-
180-
void diagnoseAvailabilityViolations(TranslationUnitDecl *TU);
181176
};
182177

183178
} // namespace clang

‎clang/lib/AST/Decl.cpp

Lines changed: 0 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -57,7 +57,6 @@
5757
#include "llvm/ADT/SmallVector.h"
5858
#include "llvm/ADT/StringRef.h"
5959
#include "llvm/ADT/StringSwitch.h"
60-
#include "llvm/ADT/iterator_range.h"
6160
#include "llvm/Support/Casting.h"
6261
#include "llvm/Support/ErrorHandling.h"
6362
#include "llvm/Support/raw_ostream.h"
@@ -5746,17 +5745,6 @@ HLSLBufferDecl *HLSLBufferDecl::Create(ASTContext &C,
57465745
return Result;
57475746
}
57485747

5749-
HLSLBufferDecl *
5750-
HLSLBufferDecl::CreateDefaultCBuffer(ASTContext &C,
5751-
DeclContext *LexicalParent) {
5752-
DeclContext *DC = LexicalParent;
5753-
IdentifierInfo *II = &C.Idents.get("$Globals", tok::TokenKind::identifier);
5754-
HLSLBufferDecl *Result = new (C, DC) HLSLBufferDecl(
5755-
DC, true, SourceLocation(), II, SourceLocation(), SourceLocation());
5756-
Result->setImplicit(true);
5757-
return Result;
5758-
}
5759-
57605748
HLSLBufferDecl *HLSLBufferDecl::CreateDeserialized(ASTContext &C,
57615749
GlobalDeclID ID) {
57625750
return new (C, ID) HLSLBufferDecl(nullptr, false, SourceLocation(), nullptr,
@@ -5769,30 +5757,6 @@ void HLSLBufferDecl::addLayoutStruct(CXXRecordDecl *LS) {
57695757
addDecl(LS);
57705758
}
57715759

5772-
void HLSLBufferDecl::addDefaultBufferDecl(Decl *D) {
5773-
assert(isImplicit() &&
5774-
"default decls can only be added to the implicit/default constant "
5775-
"buffer $Globals");
5776-
DefaultBufferDecls.push_back(D);
5777-
}
5778-
5779-
HLSLBufferDecl::buffer_decl_iterator
5780-
HLSLBufferDecl::buffer_decls_begin() const {
5781-
return buffer_decl_iterator(llvm::iterator_range(DefaultBufferDecls.begin(),
5782-
DefaultBufferDecls.end()),
5783-
decl_range(decls_begin(), decls_end()));
5784-
}
5785-
5786-
HLSLBufferDecl::buffer_decl_iterator HLSLBufferDecl::buffer_decls_end() const {
5787-
return buffer_decl_iterator(
5788-
llvm::iterator_range(DefaultBufferDecls.end(), DefaultBufferDecls.end()),
5789-
decl_range(decls_end(), decls_end()));
5790-
}
5791-
5792-
bool HLSLBufferDecl::buffer_decls_empty() {
5793-
return DefaultBufferDecls.empty() && decls_empty();
5794-
}
5795-
57965760
//===----------------------------------------------------------------------===//
57975761
// ImportDecl Implementation
57985762
//===----------------------------------------------------------------------===//

‎clang/lib/CodeGen/CGHLSLRuntime.cpp

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -116,7 +116,7 @@ void CGHLSLRuntime::emitBufferGlobalsAndMetadata(const HLSLBufferDecl *BufDecl,
116116
BufGlobals.push_back(ValueAsMetadata::get(BufGV));
117117

118118
const auto *ElemIt = LayoutStruct->element_begin();
119-
for (Decl *D : BufDecl->buffer_decls()) {
119+
for (Decl *D : BufDecl->decls()) {
120120
if (isa<CXXRecordDecl, EmptyDecl>(D))
121121
// Nothing to do for this declaration.
122122
continue;

‎clang/lib/CodeGen/CodeGenModule.cpp

Lines changed: 0 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -5513,11 +5513,6 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
55135513
if (getLangOpts().OpenCL && ASTTy->isSamplerT())
55145514
return;
55155515

5516-
// HLSL default buffer constants will be emitted during HLSLBufferDecl codegen
5517-
if (getLangOpts().HLSL &&
5518-
D->getType().getAddressSpace() == LangAS::hlsl_constant)
5519-
return;
5520-
55215516
// If this is OpenMP device, check if it is legal to emit this global
55225517
// normally.
55235518
if (LangOpts.OpenMPIsTargetDevice && OpenMPRuntime &&

‎clang/lib/Sema/Sema.cpp

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1417,7 +1417,8 @@ void Sema::ActOnEndOfTranslationUnit() {
14171417
}
14181418

14191419
if (LangOpts.HLSL)
1420-
HLSL().ActOnEndOfTranslationUnit(getASTContext().getTranslationUnitDecl());
1420+
HLSL().DiagnoseAvailabilityViolations(
1421+
getASTContext().getTranslationUnitDecl());
14211422

14221423
// If there were errors, disable 'unused' warnings since they will mostly be
14231424
// noise. Don't warn for a use from a module: either we should warn on all

‎clang/lib/Sema/SemaHLSL.cpp

Lines changed: 5 additions & 40 deletions
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,6 @@
99
//===----------------------------------------------------------------------===//
1010

1111
#include "clang/Sema/SemaHLSL.h"
12-
#include "clang/AST/ASTConsumer.h"
1312
#include "clang/AST/ASTContext.h"
1413
#include "clang/AST/Attr.h"
1514
#include "clang/AST/Attrs.inc"
@@ -148,7 +147,7 @@ bool ResourceBindings::hasBindingInfoForDecl(const VarDecl *VD) const {
148147
return DeclToBindingListIndex.contains(VD);
149148
}
150149

151-
SemaHLSL::SemaHLSL(Sema &S) : SemaBase(S), DefaultCBuffer(nullptr) {}
150+
SemaHLSL::SemaHLSL(Sema &S) : SemaBase(S) {}
152151

153152
Decl *SemaHLSL::ActOnStartBuffer(Scope *BufferScope, bool CBuffer,
154153
SourceLocation KwLoc, IdentifierInfo *Ident,
@@ -226,7 +225,7 @@ static void validatePackoffset(Sema &S, HLSLBufferDecl *BufDecl) {
226225
// or on none.
227226
bool HasPackOffset = false;
228227
bool HasNonPackOffset = false;
229-
for (auto *Field : BufDecl->buffer_decls()) {
228+
for (auto *Field : BufDecl->decls()) {
230229
VarDecl *Var = dyn_cast<VarDecl>(Field);
231230
if (!Var)
232231
continue;
@@ -493,7 +492,7 @@ void createHostLayoutStructForBuffer(Sema &S, HLSLBufferDecl *BufDecl) {
493492
LS->setImplicit(true);
494493
LS->startDefinition();
495494

496-
for (Decl *D : BufDecl->buffer_decls()) {
495+
for (Decl *D : BufDecl->decls()) {
497496
VarDecl *VD = dyn_cast<VarDecl>(D);
498497
if (!VD || VD->getStorageClass() == SC_Static ||
499498
VD->getType().getAddressSpace() == LangAS::hlsl_groupshared)
@@ -1929,19 +1928,7 @@ void DiagnoseHLSLAvailability::CheckDeclAvailability(NamedDecl *D,
19291928

19301929
} // namespace
19311930

1932-
void SemaHLSL::ActOnEndOfTranslationUnit(TranslationUnitDecl *TU) {
1933-
// process default CBuffer - create buffer layout struct and invoke codegenCGH
1934-
if (DefaultCBuffer) {
1935-
SemaRef.getCurLexicalContext()->addDecl(DefaultCBuffer);
1936-
createHostLayoutStructForBuffer(SemaRef, DefaultCBuffer);
1937-
1938-
DeclGroupRef DG(DefaultCBuffer);
1939-
SemaRef.Consumer.HandleTopLevelDecl(DG);
1940-
}
1941-
diagnoseAvailabilityViolations(TU);
1942-
}
1943-
1944-
void SemaHLSL::diagnoseAvailabilityViolations(TranslationUnitDecl *TU) {
1931+
void SemaHLSL::DiagnoseAvailabilityViolations(TranslationUnitDecl *TU) {
19451932
// Skip running the diagnostics scan if the diagnostic mode is
19461933
// strict (-fhlsl-strict-availability) and the target shader stage is known
19471934
// because all relevant diagnostics were already emitted in the
@@ -3004,14 +2991,6 @@ QualType SemaHLSL::getInoutParameterType(QualType Ty) {
30042991
return Ty;
30052992
}
30062993

3007-
static bool IsDefaultBufferConstantDecl(VarDecl *VD) {
3008-
QualType QT = VD->getType();
3009-
return VD->getDeclContext()->isTranslationUnit() &&
3010-
QT.getAddressSpace() == LangAS::Default &&
3011-
VD->getStorageClass() != SC_Static &&
3012-
!isInvalidConstantBufferLeafElementType(QT.getTypePtr());
3013-
}
3014-
30152994
void SemaHLSL::ActOnVariableDeclarator(VarDecl *VD) {
30162995
if (VD->hasGlobalStorage()) {
30172996
// make sure the declaration has a complete type
@@ -3023,21 +3002,7 @@ void SemaHLSL::ActOnVariableDeclarator(VarDecl *VD) {
30233002
return;
30243003
}
30253004

3026-
// Global variables outside a cbuffer block that are not a resource, static,
3027-
// groupshared, or an empty array or struct belong to the default constant
3028-
// buffer $Globals
3029-
if (IsDefaultBufferConstantDecl(VD)) {
3030-
if (DefaultCBuffer == nullptr)
3031-
DefaultCBuffer = HLSLBufferDecl::CreateDefaultCBuffer(
3032-
SemaRef.getASTContext(), SemaRef.getCurLexicalContext());
3033-
// update address space to hlsl_constant
3034-
QualType NewTy = getASTContext().getAddrSpaceQualType(
3035-
VD->getType(), LangAS::hlsl_constant);
3036-
VD->setType(NewTy);
3037-
DefaultCBuffer->addDefaultBufferDecl(VD);
3038-
}
3039-
3040-
// find all resources bindings on decl
3005+
// find all resources on decl
30413006
if (VD->getType()->isHLSLIntangibleType())
30423007
collectResourceBindingsOnVarDecl(VD);
30433008

‎clang/test/AST/HLSL/default_cbuffer.hlsl

Lines changed: 0 additions & 50 deletions
This file was deleted.

‎clang/test/CodeGenHLSL/basic_types.hlsl

Lines changed: 32 additions & 32 deletions
Original file line numberDiff line numberDiff line change
@@ -6,38 +6,38 @@
66
// RUN: -emit-llvm -disable-llvm-passes -o - -DNAMESPACED| FileCheck %s
77

88

9-
// CHECK: @uint16_t_Val = external addrspace(2) global i16, align 2
10-
// CHECK: @int16_t_Val = external addrspace(2) global i16, align 2
11-
// CHECK: @uint_Val = external addrspace(2) global i32, align 4
12-
// CHECK: @uint64_t_Val = external addrspace(2) global i64, align 8
13-
// CHECK: @int64_t_Val = external addrspace(2) global i64, align 8
14-
// CHECK: @int16_t2_Val = external addrspace(2) global <2 x i16>, align 4
15-
// CHECK: @int16_t3_Val = external addrspace(2) global <3 x i16>, align 8
16-
// CHECK: @int16_t4_Val = external addrspace(2) global <4 x i16>, align 8
17-
// CHECK: @uint16_t2_Val = external addrspace(2) global <2 x i16>, align 4
18-
// CHECK: @uint16_t3_Val = external addrspace(2) global <3 x i16>, align 8
19-
// CHECK: @uint16_t4_Val = external addrspace(2) global <4 x i16>, align 8
20-
// CHECK: @int2_Val = external addrspace(2) global <2 x i32>, align 8
21-
// CHECK: @int3_Val = external addrspace(2) global <3 x i32>, align 16
22-
// CHECK: @int4_Val = external addrspace(2) global <4 x i32>, align 16
23-
// CHECK: @uint2_Val = external addrspace(2) global <2 x i32>, align 8
24-
// CHECK: @uint3_Val = external addrspace(2) global <3 x i32>, align 16
25-
// CHECK: @uint4_Val = external addrspace(2) global <4 x i32>, align 16
26-
// CHECK: @int64_t2_Val = external addrspace(2) global <2 x i64>, align 16
27-
// CHECK: @int64_t3_Val = external addrspace(2) global <3 x i64>, align 32
28-
// CHECK: @int64_t4_Val = external addrspace(2) global <4 x i64>, align 32
29-
// CHECK: @uint64_t2_Val = external addrspace(2) global <2 x i64>, align 16
30-
// CHECK: @uint64_t3_Val = external addrspace(2) global <3 x i64>, align 32
31-
// CHECK: @uint64_t4_Val = external addrspace(2) global <4 x i64>, align 32
32-
// CHECK: @half2_Val = external addrspace(2) global <2 x half>, align 4
33-
// CHECK: @half3_Val = external addrspace(2) global <3 x half>, align 8
34-
// CHECK: @half4_Val = external addrspace(2) global <4 x half>, align 8
35-
// CHECK: @float2_Val = external addrspace(2) global <2 x float>, align 8
36-
// CHECK: @float3_Val = external addrspace(2) global <3 x float>, align 16
37-
// CHECK: @float4_Val = external addrspace(2) global <4 x float>, align 16
38-
// CHECK: @double2_Val = external addrspace(2) global <2 x double>, align 16
39-
// CHECK: @double3_Val = external addrspace(2) global <3 x double>, align 32
40-
// CHECK: @double4_Val = external addrspace(2) global <4 x double>, align 32
9+
// CHECK: @uint16_t_Val = global i16 0, align 2
10+
// CHECK: @int16_t_Val = global i16 0, align 2
11+
// CHECK: @uint_Val = global i32 0, align 4
12+
// CHECK: @uint64_t_Val = global i64 0, align 8
13+
// CHECK: @int64_t_Val = global i64 0, align 8
14+
// CHECK: @int16_t2_Val = global <2 x i16> zeroinitializer, align 4
15+
// CHECK: @int16_t3_Val = global <3 x i16> zeroinitializer, align 8
16+
// CHECK: @int16_t4_Val = global <4 x i16> zeroinitializer, align 8
17+
// CHECK: @uint16_t2_Val = global <2 x i16> zeroinitializer, align 4
18+
// CHECK: @uint16_t3_Val = global <3 x i16> zeroinitializer, align 8
19+
// CHECK: @uint16_t4_Val = global <4 x i16> zeroinitializer, align 8
20+
// CHECK: @int2_Val = global <2 x i32> zeroinitializer, align 8
21+
// CHECK: @int3_Val = global <3 x i32> zeroinitializer, align 16
22+
// CHECK: @int4_Val = global <4 x i32> zeroinitializer, align 16
23+
// CHECK: @uint2_Val = global <2 x i32> zeroinitializer, align 8
24+
// CHECK: @uint3_Val = global <3 x i32> zeroinitializer, align 16
25+
// CHECK: @uint4_Val = global <4 x i32> zeroinitializer, align 16
26+
// CHECK: @int64_t2_Val = global <2 x i64> zeroinitializer, align 16
27+
// CHECK: @int64_t3_Val = global <3 x i64> zeroinitializer, align 32
28+
// CHECK: @int64_t4_Val = global <4 x i64> zeroinitializer, align 32
29+
// CHECK: @uint64_t2_Val = global <2 x i64> zeroinitializer, align 16
30+
// CHECK: @uint64_t3_Val = global <3 x i64> zeroinitializer, align 32
31+
// CHECK: @uint64_t4_Val = global <4 x i64> zeroinitializer, align 32
32+
// CHECK: @half2_Val = global <2 x half> zeroinitializer, align 4
33+
// CHECK: @half3_Val = global <3 x half> zeroinitializer, align 8
34+
// CHECK: @half4_Val = global <4 x half> zeroinitializer, align 8
35+
// CHECK: @float2_Val = global <2 x float> zeroinitializer, align 8
36+
// CHECK: @float3_Val = global <3 x float> zeroinitializer, align 16
37+
// CHECK: @float4_Val = global <4 x float> zeroinitializer, align 16
38+
// CHECK: @double2_Val = global <2 x double> zeroinitializer, align 16
39+
// CHECK: @double3_Val = global <3 x double> zeroinitializer, align 32
40+
// CHECK: @double4_Val = global <4 x double> zeroinitializer, align 32
4141

4242
#ifdef NAMESPACED
4343
#define TYPE_DECL(T) hlsl::T T##_Val

0 commit comments

Comments
 (0)