https://github.com/spall created
https://github.com/llvm/llvm-project/pull/109323
Make Constant Arrays in HLSL assignable.
Closes #109043
>From b24aed9771a415a4dc896c48cfc0481574a0773c Mon Sep 17 00:00:00 2001
From: Sarah Spall <sp...@planetbauer.com>
Date: Wed, 18 Sep 2024 22:19:07 +0000
Subject: [PATCH 1/2] enable array by value assignment
---
clang/include/clang/AST/CanonicalType.h | 1 +
clang/lib/AST/ExprClassification.cpp | 3 ++-
clang/lib/Sema/SemaOverload.cpp | 11 ++++++++---
3 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/clang/include/clang/AST/CanonicalType.h
b/clang/include/clang/AST/CanonicalType.h
index dde08f0394c98d..6102eb01793530 100644
--- a/clang/include/clang/AST/CanonicalType.h
+++ b/clang/include/clang/AST/CanonicalType.h
@@ -299,6 +299,7 @@ class CanProxyBase {
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isDependentType)
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isOverloadableType)
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isArrayType)
+ LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, isConstantArrayType)
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasPointerRepresentation)
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasObjCPointerRepresentation)
LLVM_CLANG_CANPROXY_SIMPLE_ACCESSOR(bool, hasIntegerRepresentation)
diff --git a/clang/lib/AST/ExprClassification.cpp
b/clang/lib/AST/ExprClassification.cpp
index 5dde923312698f..9d97633309ada2 100644
--- a/clang/lib/AST/ExprClassification.cpp
+++ b/clang/lib/AST/ExprClassification.cpp
@@ -704,7 +704,8 @@ static Cl::ModifiableType IsModifiable(ASTContext &Ctx,
const Expr *E,
return Cl::CM_ConstAddrSpace;
// Arrays are not modifiable, only their elements are.
- if (CT->isArrayType())
+ if (CT->isArrayType() &&
+ !(Ctx.getLangOpts().HLSL && CT->isConstantArrayType()))
return Cl::CM_ArrayType;
// Incomplete types are not modifiable.
if (CT->isIncompleteType())
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index d304f322aced64..ce503f9c69b411 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -2232,16 +2232,21 @@ static bool IsStandardConversion(Sema &S, Expr* From,
QualType ToType,
// just strip the qualifiers because they don't matter.
FromType = FromType.getUnqualifiedType();
} else if (S.getLangOpts().HLSL && FromType->isConstantArrayType() &&
- ToType->isArrayParameterType()) {
+ ToType->isConstantArrayType()) {
// HLSL constant array parameters do not decay, so if the argument is a
// constant array and the parameter is an ArrayParameterType we have
special
// handling here.
- FromType = S.Context.getArrayParameterType(FromType);
+ if (ToType->isArrayParameterType()) {
+ FromType = S.Context.getArrayParameterType(FromType);
+ SCS.First = ICK_HLSL_Array_RValue;
+ } else {
+ SCS.First = ICK_Identity;
+ }
+
if (S.Context.getCanonicalType(FromType) !=
S.Context.getCanonicalType(ToType))
return false;
- SCS.First = ICK_HLSL_Array_RValue;
SCS.setAllToTypes(ToType);
return true;
} else if (FromType->isArrayType()) {
>From a81247d0992a3fb2376a9b3dc60e5fbfd782ffbf Mon Sep 17 00:00:00 2001
From: Sarah Spall <sp...@planetbauer.com>
Date: Thu, 19 Sep 2024 19:33:39 +0000
Subject: [PATCH 2/2] test assignable arrays
---
clang/test/AST/HLSL/ArrayAssignable.hlsl | 80 +++++++++++++++++++
clang/test/CodeGenHLSL/ArrayAssignable.hlsl | 50 ++++++++++++
.../test/SemaHLSL/ArrayAssignable_errors.hlsl | 29 +++++++
3 files changed, 159 insertions(+)
create mode 100644 clang/test/AST/HLSL/ArrayAssignable.hlsl
create mode 100644 clang/test/CodeGenHLSL/ArrayAssignable.hlsl
create mode 100644 clang/test/SemaHLSL/ArrayAssignable_errors.hlsl
diff --git a/clang/test/AST/HLSL/ArrayAssignable.hlsl
b/clang/test/AST/HLSL/ArrayAssignable.hlsl
new file mode 100644
index 00000000000000..52c9918aa85334
--- /dev/null
+++ b/clang/test/AST/HLSL/ArrayAssignable.hlsl
@@ -0,0 +1,80 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -ast-dump %s
| FileCheck %s
+
+// CHECK-LABEL: arr_assign1
+// CHECK: CompoundStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[A:0x[0-9a-f]+]] {{.*}} col:7 used Arr 'int[2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 1
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[B:0x[0-9a-f]+]] {{.*}} col:7 used Arr2 'int[2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: BinaryOperator 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue '='
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue Var [[A]] 'Arr'
'int[2]'
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue Var [[B]] 'Arr2'
'int[2]'
+void arr_assign1() {
+ int Arr[2] = {0, 1};
+ int Arr2[2] = {0, 0};
+ Arr = Arr2;
+}
+
+// CHECK-LABEL: arr_assign2
+// CHECK: CompoundStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[A:0x[0-9a-f]+]] {{.*}} col:7 used Arr 'int[2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 1
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[B:0x[0-9a-f]+]] {{.*}} col:7 used Arr2 'int[2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[C:0x[0-9a-f]+]] {{.*}} col:7 used Arr3 'int[2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 2
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 2
+// CHECK: BinaryOperator 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue '='
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue Var [[A]] 'Arr'
'int[2]'
+// CHECK: BinaryOperator 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue '='
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue Var [[B]] 'Arr2'
'int[2]'
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]' lvalue Var [[C]] 'Arr3'
'int[2]'
+void arr_assign2() {
+ int Arr[2] = {0, 1};
+ int Arr2[2] = {0, 0};
+ int Arr3[2] = {2, 2};
+ Arr = Arr2 = Arr3;
+}
+
+// CHECK-LABEL: arr_assign3
+// CHECK: CompoundStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[A:0x[0-9a-f]+]] {{.*}} col:7 used Arr 'int[2][2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2][2]'
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 1
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 2
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 3
+// CHECK: DeclStmt 0x{{[0-9a-f]+}} {{.*}}
+// CHECK: VarDecl [[B:0x[0-9a-f]+]] {{.*}} col:7 used Arr2 'int[2][2]' cinit
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2][2]'
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 0
+// CHECK: InitListExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2]'
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 1
+// CHECK: IntegerLiteral 0x{{[0-9a-f]+}} {{.*}} 'int' 1
+// CHECK: BinaryOperator 0x{{[0-9a-f]+}} {{.*}} 'int[2][2]' lvalue '='
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2][2]' lvalue Var [[A]]
'Arr' 'int[2][2]'
+// CHECK: DeclRefExpr 0x{{[0-9a-f]+}} {{.*}} 'int[2][2]' lvalue Var [[B]]
'Arr2' 'int[2][2]'
+void arr_assign3() {
+ int Arr[2][2] = {{0, 1}, {2, 3}};
+ int Arr2[2][2] = {{0, 0}, {1, 1}};
+ Arr = Arr2;
+}
\ No newline at end of file
diff --git a/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
b/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
new file mode 100644
index 00000000000000..769154df2bfb43
--- /dev/null
+++ b/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -emit-llvm
-disable-llvm-passes -o - %s | FileCheck %s --enable-var-scope
+
+// CHECK-LABEL: define void {{.*}}arr_assign1
+// CHECK: [[Arr:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Arr2:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4
{{@.*}}, i32 8, i1 false)
+// CHECK: call void @llvm.memset.p0.i32(ptr align 4 [[Arr2]], i8 0, i32 8, i1
false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4
[[Arr2]], i32 8, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4
[[Arr]], i32 8, i1 false)
+// CHECK: ret void
+void arr_assign1() {
+ int Arr[2] = {0, 1};
+ int Arr2[2] = {0, 0};
+ Arr = Arr2;
+}
+
+// CHECK-LABEL: define void {{.*}}arr_assign2
+// CHECK: [[Arr:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Arr2:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Arr3:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4
{{@.*}}, i32 8, i1 false)
+// CHECK: call void @llvm.memset.p0.i32(ptr align 4 [[Arr2]], i8 0, i32 8, i1
false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr3]], ptr align 4
{{@.*}}, i32 8, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr2]], ptr align 4
[[Arr3]], i32 8, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4
[[Arr2]], i32 8, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4
[[Arr]], i32 8, i1 false)
+// CHECK: ret void
+void arr_assign2() {
+ int Arr[2] = {0, 1};
+ int Arr2[2] = {0, 0};
+ int Arr3[2] = {3, 4};
+ Arr = Arr2 = Arr3;
+}
+
+// CHECK-LABEL: define void {{.*}}arr_assign3
+// CHECK: [[Arr3:%.*]] = alloca [2 x [2 x i32]], align 4
+// CHECK: [[Arr4:%.*]] = alloca [2 x [2 x i32]], align 4
+// CHECK: [[Tmp:%.*]] = alloca [2 x [2 x i32]], align 4
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr3]], ptr align 4
{{@.*}}, i32 16, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr4]], ptr align 4
{{@.*}}, i32 16, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr3]], ptr align 4
[[Arr4]], i32 16, i1 false)
+// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4
[[Arr3]], i32 16, i1 false)
+// CHECK: ret void
+void arr_assign3() {
+ int Arr2[2][2] = {{0, 0}, {1, 1}};
+ int Arr3[2][2] = {{1, 1}, {0, 0}};
+ Arr2 = Arr3;
+}
diff --git a/clang/test/SemaHLSL/ArrayAssignable_errors.hlsl
b/clang/test/SemaHLSL/ArrayAssignable_errors.hlsl
new file mode 100644
index 00000000000000..1925032a93d488
--- /dev/null
+++ b/clang/test/SemaHLSL/ArrayAssignable_errors.hlsl
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -finclude-default-header -triple
dxil-pc-shadermodel6.6-library %s -verify
+
+void test_wrong_size1() {
+ int Arr[2] = {0, 1};
+ int Arr2[3] = {1, 2, 0};
+ Arr = Arr2;
+ // expected-error@-1 {{assigning to 'int[2]' from incompatible type
'int[3]'}}
+}
+
+void test_wrong_size2() {
+ int Arr[2] = {0, 1};
+ int Arr2[3] = {1, 2, 0};
+ Arr2 = Arr;
+ // expected-error@-1 {{assigning to 'int[3]' from incompatible type
'int[2]'}}
+}
+
+void test_wrong_size3() {
+ int Arr[2][2] = {{0, 1}, {2, 3}};
+ int Arr2[2] = {4, 5};
+ Arr = Arr2;
+ // expected-error@-1 {{assigning to 'int[2][2]' from incompatible type
'int[2]'}}
+}
+
+void test_wrong_size4() {
+ int Arr[2][2] = {{0, 1}, {2, 3}};
+ int Arr2[2] = {4, 5};
+ Arr2 = Arr;
+ // expected-error@-1 {{assigning to 'int[2]' from incompatible type
'int[2][2]'}}
+}
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