[clang] [HLSL] Add RWStructuredBuffer definition to HLSLExternalSemaSource (PR #113477)
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Wed Oct 23 10:32:33 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-hlsl
Author: Helena Kotas (hekota)
<details>
<summary>Changes</summary>
Add tests for RWStructuredBuffer class definition. Use shared test files for all structured buffers' constructor and subscript tests. Keep AST and element-type tests separate for each buffer type because they longer and failures would be harder to match.
Fixes #<!-- -->112775
---
Full diff: https://github.com/llvm/llvm-project/pull/113477.diff
6 Files Affected:
- (modified) clang/lib/Sema/HLSLExternalSemaSource.cpp (+11)
- (added) clang/test/AST/HLSL/RWStructuredBuffer-AST.hlsl (+64)
- (modified) clang/test/AST/HLSL/StructuredBuffer-AST.hlsl (+1-1)
- (added) clang/test/CodeGenHLSL/builtins/RWStructuredBuffer-elementtype.hlsl (+70)
- (renamed) clang/test/CodeGenHLSL/builtins/StructuredBuffers-constructors.hlsl (+13-4)
- (renamed) clang/test/CodeGenHLSL/builtins/StructuredBuffers-subscripts.hlsl (+1-1)
``````````diff
diff --git a/clang/lib/Sema/HLSLExternalSemaSource.cpp b/clang/lib/Sema/HLSLExternalSemaSource.cpp
index 5f51047b4d7b12..e62a42767811ff 100644
--- a/clang/lib/Sema/HLSLExternalSemaSource.cpp
+++ b/clang/lib/Sema/HLSLExternalSemaSource.cpp
@@ -519,6 +519,17 @@ void HLSLExternalSemaSource::defineHLSLTypesWithForwardDeclarations() {
.addArraySubscriptOperators()
.completeDefinition();
});
+
+ Decl = BuiltinTypeDeclBuilder(*SemaPtr, HLSLNamespace, "RWStructuredBuffer")
+ .addSimpleTemplateParams(*SemaPtr, {"element_type"})
+ .Record;
+ onCompletion(Decl, [this](CXXRecordDecl *Decl) {
+ setupBufferType(Decl, *SemaPtr, ResourceClass::UAV,
+ ResourceKind::TypedBuffer, /*IsROV=*/false,
+ /*RawBuffer=*/true)
+ .addArraySubscriptOperators()
+ .completeDefinition();
+ });
}
void HLSLExternalSemaSource::onCompletion(CXXRecordDecl *Record,
diff --git a/clang/test/AST/HLSL/RWStructuredBuffer-AST.hlsl b/clang/test/AST/HLSL/RWStructuredBuffer-AST.hlsl
new file mode 100644
index 00000000000000..6e69f46dc944bf
--- /dev/null
+++ b/clang/test/AST/HLSL/RWStructuredBuffer-AST.hlsl
@@ -0,0 +1,64 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -ast-dump -DEMPTY %s | FileCheck -check-prefix=EMPTY %s
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -ast-dump %s | FileCheck %s
+
+
+// This test tests two different AST generations. The "EMPTY" test mode verifies
+// the AST generated by forward declaration of the HLSL types which happens on
+// initializing the HLSL external AST with an AST Context.
+
+// The non-empty mode has a use that requires the RWStructuredBuffer type be complete,
+// which results in the AST being populated by the external AST source. That
+// case covers the full implementation of the template declaration and the
+// instantiated specialization.
+
+// EMPTY: ClassTemplateDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit RWStructuredBuffer
+// EMPTY-NEXT: TemplateTypeParmDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> class depth 0 index 0 element_type
+// EMPTY-NEXT: CXXRecordDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit <undeserialized declarations> class RWStructuredBuffer
+// EMPTY-NEXT: FinalAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit final
+
+// There should be no more occurrances of RWStructuredBuffer
+// EMPTY-NOT: RWStructuredBuffer
+
+#ifndef EMPTY
+
+RWStructuredBuffer<int> Buffer;
+
+#endif
+
+// CHECK: ClassTemplateDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit RWStructuredBuffer
+// CHECK-NEXT: TemplateTypeParmDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> class depth 0 index 0 element_type
+// CHECK-NEXT: CXXRecordDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit class RWStructuredBuffer definition
+
+// CHECK: FinalAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit final
+// CHECK-NEXT: FieldDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit h '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(element_type)]]
+// CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit TypedBuffer
+
+// CHECK: CXXMethodDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> operator[] 'element_type &const (unsigned int) const'
+// CHECK-NEXT: ParmVarDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> Idx 'unsigned int'
+// CHECK-NEXT: CompoundStmt 0x{{[0-9A-Fa-f]+}} <<invalid sloc>>
+// CHECK-NEXT: ReturnStmt 0x{{[0-9A-Fa-f]+}} <<invalid sloc>>
+// CHECK-NEXT: MemberExpr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> 'element_type' lvalue .e 0x{{[0-9A-Fa-f]+}}
+// CHECK-NEXT: CXXThisExpr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> 'const RWStructuredBuffer<element_type>' lvalue implicit this
+// CHECK-NEXT: AlwaysInlineAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit always_inline
+
+// CHECK-NEXT: CXXMethodDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> operator[] 'element_type &(unsigned int)'
+// CHECK-NEXT: ParmVarDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> Idx 'unsigned int'
+// CHECK-NEXT: CompoundStmt 0x{{[0-9A-Fa-f]+}} <<invalid sloc>>
+// CHECK-NEXT: ReturnStmt 0x{{[0-9A-Fa-f]+}} <<invalid sloc>>
+// CHECK-NEXT: MemberExpr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> 'element_type' lvalue .e 0x{{[0-9A-Fa-f]+}}
+// CHECK-NEXT: CXXThisExpr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> 'RWStructuredBuffer<element_type>' lvalue implicit this
+// CHECK-NEXT: AlwaysInlineAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit always_inline
+
+// CHECK: ClassTemplateSpecializationDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> class RWStructuredBuffer definition
+
+// CHECK: TemplateArgument type 'int'
+// CHECK-NEXT: BuiltinType 0x{{[0-9A-Fa-f]+}} 'int'
+// CHECK-NEXT: FinalAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit final
+// CHECK-NEXT: FieldDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit h '__hlsl_resource_t
+// CHECK-SAME{LITERAL}: [[hlsl::resource_class(UAV)]]
+// CHECK-SAME{LITERAL}: [[hlsl::raw_buffer]]
+// CHECK-SAME{LITERAL}: [[hlsl::contained_type(int)]]
+// CHECK-NEXT: HLSLResourceAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit TypedBuffer
diff --git a/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl b/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
index 030fcfc31691dc..9cbc1d7559e7e9 100644
--- a/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
+++ b/clang/test/AST/HLSL/StructuredBuffer-AST.hlsl
@@ -17,7 +17,7 @@
// EMPTY-NEXT: FinalAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit final
// There should be no more occurrances of StructuredBuffer
-// EMPTY-NOT: StructuredBuffer
+// EMPTY-NOT: {{/s}}StructuredBuffer
#ifndef EMPTY
diff --git a/clang/test/CodeGenHLSL/builtins/RWStructuredBuffer-elementtype.hlsl b/clang/test/CodeGenHLSL/builtins/RWStructuredBuffer-elementtype.hlsl
new file mode 100644
index 00000000000000..3cb9e14ec35c47
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/RWStructuredBuffer-elementtype.hlsl
@@ -0,0 +1,70 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.2-compute -finclude-default-header -fnative-half-type -emit-llvm -o - %s | FileCheck %s
+
+// NOTE: The number in type name and whether the struct is packed or not will mostly
+// likely change once subscript operators are properly implemented (llvm/llvm-project#95956)
+// and theinterim field of the contained type is removed.
+
+// CHECK: %"class.hlsl::RWStructuredBuffer" = type <{ target("dx.RawBuffer", i16, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.0" = type <{ target("dx.RawBuffer", i16, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.2" = type { target("dx.RawBuffer", i32, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.3" = type { target("dx.RawBuffer", i32, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.4" = type { target("dx.RawBuffer", i64, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.5" = type { target("dx.RawBuffer", i64, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.6" = type <{ target("dx.RawBuffer", half, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.8" = type { target("dx.RawBuffer", float, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.9" = type { target("dx.RawBuffer", double, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.10" = type { target("dx.RawBuffer", <4 x i16>, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.11" = type { target("dx.RawBuffer", <3 x i32>, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.12" = type { target("dx.RawBuffer", <2 x half>, 1, 0)
+// CHECK: %"class.hlsl::RWStructuredBuffer.13" = type { target("dx.RawBuffer", <3 x float>, 1, 0)
+
+RWStructuredBuffer<int16_t> BufI16;
+RWStructuredBuffer<uint16_t> BufU16;
+RWStructuredBuffer<int> BufI32;
+RWStructuredBuffer<uint> BufU32;
+RWStructuredBuffer<int64_t> BufI64;
+RWStructuredBuffer<uint64_t> BufU64;
+RWStructuredBuffer<half> BufF16;
+RWStructuredBuffer<float> BufF32;
+RWStructuredBuffer<double> BufF64;
+RWStructuredBuffer< vector<int16_t, 4> > BufI16x4;
+RWStructuredBuffer< vector<uint, 3> > BufU32x3;
+RWStructuredBuffer<half2> BufF16x2;
+RWStructuredBuffer<float3> BufF32x3;
+// TODO: RWStructuredBuffer<snorm half> BufSNormF16; -> 11
+// TODO: RWStructuredBuffer<unorm half> BufUNormF16; -> 12
+// TODO: RWStructuredBuffer<snorm float> BufSNormF32; -> 13
+// TODO: RWStructuredBuffer<unorm float> BufUNormF32; -> 14
+// TODO: RWStructuredBuffer<snorm double> BufSNormF64; -> 15
+// TODO: RWStructuredBuffer<unorm double> BufUNormF64; -> 16
+
+[numthreads(1,1,1)]
+void main(int GI : SV_GroupIndex) {
+ BufI16[GI] = 0;
+ BufU16[GI] = 0;
+ BufI32[GI] = 0;
+ BufU32[GI] = 0;
+ BufI64[GI] = 0;
+ BufU64[GI] = 0;
+ BufF16[GI] = 0;
+ BufF32[GI] = 0;
+ BufF64[GI] = 0;
+ BufI16x4[GI] = 0;
+ BufU32x3[GI] = 0;
+ BufF16x2[GI] = 0;
+ BufF32x3[GI] = 0;
+}
+
+// CHECK: !{{[0-9]+}} = !{ptr @BufI16, i32 10, i32 2,
+// CHECK: !{{[0-9]+}} = !{ptr @BufU16, i32 10, i32 3,
+// CHECK: !{{[0-9]+}} = !{ptr @BufI32, i32 10, i32 4,
+// CHECK: !{{[0-9]+}} = !{ptr @BufU32, i32 10, i32 5,
+// CHECK: !{{[0-9]+}} = !{ptr @BufI64, i32 10, i32 6,
+// CHECK: !{{[0-9]+}} = !{ptr @BufU64, i32 10, i32 7,
+// CHECK: !{{[0-9]+}} = !{ptr @BufF16, i32 10, i32 8,
+// CHECK: !{{[0-9]+}} = !{ptr @BufF32, i32 10, i32 9,
+// CHECK: !{{[0-9]+}} = !{ptr @BufF64, i32 10, i32 10,
+// CHECK: !{{[0-9]+}} = !{ptr @BufI16x4, i32 10, i32 2,
+// CHECK: !{{[0-9]+}} = !{ptr @BufU32x3, i32 10, i32 5,
+// CHECK: !{{[0-9]+}} = !{ptr @BufF16x2, i32 10, i32 8,
+// CHECK: !{{[0-9]+}} = !{ptr @BufF32x3, i32 10, i32 9,
diff --git a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-constructor.hlsl b/clang/test/CodeGenHLSL/builtins/StructuredBuffers-constructors.hlsl
similarity index 57%
rename from clang/test/CodeGenHLSL/builtins/StructuredBuffer-constructor.hlsl
rename to clang/test/CodeGenHLSL/builtins/StructuredBuffers-constructors.hlsl
index 4dbca9bc0a4d93..c398f3122fdb80 100644
--- a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-constructor.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/StructuredBuffers-constructors.hlsl
@@ -4,21 +4,30 @@
// NOTE: SPIRV codegen for resource types is not yet implemented
StructuredBuffer<float> Buf : register(u10);
+RWStructuredBuffer<float> Buf2 : register(u5, space1);
// CHECK: %"class.hlsl::StructuredBuffer" = type { target("dx.RawBuffer", float, 1, 0), float }
+// CHECK: %"class.hlsl::RWStructuredBuffer" = type { target("dx.RawBuffer", float, 1, 0), float }
+
// CHECK: @Buf = global %"class.hlsl::StructuredBuffer" zeroinitializer, align 4
+// CHECK: @Buf2 = global %"class.hlsl::RWStructuredBuffer" zeroinitializer, align 4
// CHECK: define linkonce_odr void @_ZN4hlsl16StructuredBufferIfEC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %this)
// CHECK-NEXT: entry:
-
-// CHECK: define internal void @_GLOBAL__sub_I_StructuredBuffer_constructor.hlsl()
+// CHECK: define linkonce_odr void @_ZN4hlsl18RWStructuredBufferIfEC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %this)
// CHECK-NEXT: entry:
-// CHECK-NEXT: call void @__cxx_global_var_init()
-// CHECK-NEXT: call void @_init_resource_bindings()
+
+// CHECK: define internal void @_GLOBAL__sub_I_StructuredBuffers_constructors.hlsl()
+// CHECK: entry:
+// CHECK: call void @_init_resource_bindings()
// CHECK: define internal void @_init_resource_bindings() {
// CHECK-NEXT: entry:
// CHECK-DXIL-NEXT: %Buf_h = call target("dx.RawBuffer", float, 1, 0) @llvm.dx.handle.fromBinding.tdx.RawBuffer_f32_1_0t(i32 0, i32 10, i32 1, i32 0, i1 false)
// CHECK-DXIL-NEXT: store target("dx.RawBuffer", float, 1, 0) %Buf_h, ptr @Buf, align 4
+// CHECK-DXIL-NEXT: %Buf2_h = call target("dx.RawBuffer", float, 1, 0) @llvm.dx.handle.fromBinding.tdx.RawBuffer_f32_1_0t(i32 1, i32 5, i32 1, i32 0, i1 false)
+// CHECK-DXIL-NEXT: store target("dx.RawBuffer", float, 1, 0) %Buf2_h, ptr @Buf2, align 4
// CHECK-SPIRV-NEXT: %Buf_h = call target("dx.RawBuffer", float, 1, 0) @llvm.spv.handle.fromBinding.tdx.RawBuffer_f32_1_0t(i32 0, i32 10, i32 1, i32 0, i1 false)
// CHECK-SPIRV-NEXT: store target("dx.RawBuffer", float, 1, 0) %Buf_h, ptr @Buf", align 4
+// CHECK-SPIRV-NEXT: %Buf2_h = call target("dx.RawBuffer", float, 1, 0) @llvm.spv.handle.fromBinding.tdx.RawBuffer_f32_1_0t(i32 1, i32 5, i32 1, i32 0, i1 false)
+// CHECK-SPIRV-NEXT: store target("dx.RawBuffer", float, 1, 0) %Buf2_h, ptr @Buf2", align 4
diff --git a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-subscript.hlsl b/clang/test/CodeGenHLSL/builtins/StructuredBuffers-subscripts.hlsl
similarity index 91%
rename from clang/test/CodeGenHLSL/builtins/StructuredBuffer-subscript.hlsl
rename to clang/test/CodeGenHLSL/builtins/StructuredBuffers-subscripts.hlsl
index 155749ec4f94a9..b73b743c9b3f15 100644
--- a/clang/test/CodeGenHLSL/builtins/StructuredBuffer-subscript.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/StructuredBuffers-subscripts.hlsl
@@ -1,7 +1,7 @@
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -emit-llvm -o - -O0 %s | FileCheck %s
StructuredBuffer<int> In;
-StructuredBuffer<int> Out;
+RWStructuredBuffer<int> Out;
[numthreads(1,1,1)]
void main(unsigned GI : SV_GroupIndex) {
``````````
</details>
https://github.com/llvm/llvm-project/pull/113477
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