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b0cfbfd74b
OpenACC restricts the contents of a 'for' loop affected by a 'loop' construct without a 'seq'. The loop variable must be integer, pointer, or random-access-iterator, it must monotonically increase/decrease, and the trip count must be computable at runtime before the function. This patch tries to implement some of these limitations to the best of our ability, though it causes us to be perhaps overly restrictive at the moment. I expect we'll revisit some of these rules/add additional supported forms of loop-variable and 'monotonically increasing' here, but the currently enforced rules are heavily inspired by the OMP implementation here.
219 lines
7.7 KiB
C++
219 lines
7.7 KiB
C++
// RUN: %clang_cc1 %s -fopenacc -ast-dump | FileCheck %s
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// Test this with PCH.
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// RUN: %clang_cc1 %s -fopenacc -emit-pch -o %t %s
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// RUN: %clang_cc1 %s -fopenacc -include-pch %t -ast-dump-all | FileCheck %s
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#ifndef PCH_HELPER
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#define PCH_HELPER
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struct S {
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constexpr S(){};
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constexpr operator auto() {return 1;}
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};
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void NormalUses() {
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// CHECK: FunctionDecl{{.*}}NormalUses
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// CHECK-NEXT: CompoundStmt
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#pragma acc loop collapse(1)
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for(int i = 0; i < 5; ++i);
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: ConstantExpr{{.*}}'int'
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// CHECK-NEXT: value: Int 1
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 1
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: NullStmt
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#pragma acc loop collapse(force:S{})
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for(int i = 0; i < 5; ++i);
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: ConstantExpr{{.*}}'int'
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// CHECK-NEXT: value: Int 1
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// CHECK-NEXT: ImplicitCastExpr{{.*}} 'int' <UserDefinedConversion>
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// CHECK-NEXT: CXXMemberCallExpr{{.*}} 'int'
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// CHECK-NEXT: MemberExpr{{.*}} .operator auto
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// CHECK-NEXT: MaterializeTemporaryExpr{{.*}}'S' lvalue
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// CHECK-NEXT: CXXTemporaryObjectExpr{{.*}}'S' 'void ()' list
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: NullStmt
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}
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template<typename T, unsigned Value>
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void TemplUses() {
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// CHECK: FunctionTemplateDecl{{.*}}TemplUses
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// CHECK-NEXT: TemplateTypeParmDecl {{.*}} referenced typename depth 0 index 0 T
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// CHECK-NEXT: NonTypeTemplateParmDecl{{.*}} referenced 'unsigned int' depth 0 index 1 Value
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// CHECK-NEXT: FunctionDecl{{.*}} TemplUses 'void ()'
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// CHECK-NEXT: CompoundStmt
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#pragma acc loop collapse(Value)
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for(int i = 0; i < 5; ++i)
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for(int j = 0; j < 5; ++j);
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: DeclRefExpr{{.*}} 'unsigned int' NonTypeTemplateParm{{.*}} 'Value'
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} j 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: NullStmt
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#pragma acc loop collapse(force:T{} + S{})
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for(int i = 0; i < 5; ++i)
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for(int j = 0; j < 5; ++j);
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: BinaryOperator {{.*}}'+'
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// CHECK-NEXT: CXXUnresolvedConstructExpr{{.*}}'T' 'T' list
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// CHECK-NEXT: InitListExpr
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// CHECK-NEXT: CXXTemporaryObjectExpr{{.*}}'S' 'void ()' list
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} j 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: NullStmt
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// Instantiation:
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// CHECK-NEXT: FunctionDecl{{.*}} used TemplUses 'void ()' implicit_instantiation
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// CHECK-NEXT: TemplateArgument type 'S'
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// CHECK-NEXT: RecordType{{.*}} 'S'
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// CHECK-NEXT: CXXRecord{{.*}} 'S'
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// CHECK-NEXT: TemplateArgument integral '2U'
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// CHECK-NEXT: CompoundStmt
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: ConstantExpr{{.*}}'unsigned int'
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// CHECK-NEXT: value: Int 2
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// CHECK-NEXT: SubstNonTypeTemplateParmExpr{{.*}} 'unsigned int'
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// CHECK-NEXT: NonTypeTemplateParmDecl
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// CHECK-NEXT: IntegerLiteral {{.*}} 'unsigned int' 2
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} j 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: NullStmt
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// CHECK-NEXT: OpenACCLoopConstruct
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// CHECK-NEXT: collapse clause
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// CHECK-NEXT: ConstantExpr{{.*}}'int'
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// CHECK-NEXT: value: Int 2
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// CHECK-NEXT: BinaryOperator {{.*}}'+'
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// CHECK-NEXT: ImplicitCastExpr{{.*}} 'int' <UserDefinedConversion>
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// CHECK-NEXT: CXXMemberCallExpr{{.*}} 'int'
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// CHECK-NEXT: MemberExpr{{.*}} .operator auto
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// CHECK-NEXT: MaterializeTemporaryExpr{{.*}}'S' lvalue
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// CHECK-NEXT: CXXTemporaryObjectExpr{{.*}}'S' 'void ()' list
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// CHECK-NEXT: ImplicitCastExpr{{.*}} 'int' <UserDefinedConversion>
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// CHECK-NEXT: CXXMemberCallExpr{{.*}} 'int'
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// CHECK-NEXT: MemberExpr{{.*}} .operator auto
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// CHECK-NEXT: MaterializeTemporaryExpr{{.*}}'S' lvalue
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// CHECK-NEXT: CXXTemporaryObjectExpr{{.*}}'S' 'void ()' list
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} i 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'i' 'int'
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// CHECK-NEXT: ForStmt
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// CHECK-NEXT: DeclStmt
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// CHECK-NEXT: VarDecl{{.*}} j 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 0
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// CHECK-NEXT: <<<NULL>>>
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// CHECK-NEXT: BinaryOperator{{.*}}'<'
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// CHECK-NEXT: ImplicitCastExpr
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: IntegerLiteral{{.*}} 'int' 5
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// CHECK-NEXT: UnaryOperator{{.*}}++
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// CHECK-NEXT: DeclRefExpr{{.*}}'j' 'int'
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// CHECK-NEXT: NullStmt
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}
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void Inst() {
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TemplUses<S, 2>();
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}
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#endif // PCH_HELPER
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