derek.holloway
7502bf64a4
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58 lines
3.0 KiB
C++
58 lines
3.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64 -std=c++20 -fsyntax-only -verify -disable-llvm-passes %s
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// RUN: %clang_cc1 -triple x86_64 -std=c++20 -fsyntax-only -verify -disable-llvm-passes -fexperimental-new-constant-interpreter %s
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// REQUIRES: aarch64-registered-target
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// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -std=c++20 -fsyntax-only -verify -disable-llvm-passes %s
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// RUN: %clang_cc1 -triple aarch64 -target-feature +sve -std=c++20 -fsyntax-only -verify -disable-llvm-passes -fexperimental-new-constant-interpreter %s
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template <typename T>
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using VecT __attribute__((vector_size(16))) = T;
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struct FooT {
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template <typename T>
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using VecT __attribute__((vector_size(8))) = T;
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};
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void test_builtin_vectorelements() {
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using veci4 __attribute__((vector_size(16))) = int;
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(void) __builtin_vectorelements(veci4);
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using some_other_vec = veci4;
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(void) __builtin_vectorelements(some_other_vec);
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using some_int = int;
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(void) __builtin_vectorelements(some_int); // expected-error {{argument to __builtin_vectorelements must be of vector type}}
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class Foo {};
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__builtin_vectorelements(Foo); // expected-error {{argument to __builtin_vectorelements must be of vector type}}
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struct Bar { veci4 vec; };
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(void) __builtin_vectorelements(Bar{}.vec);
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struct Baz { using VecT = veci4; };
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(void) __builtin_vectorelements(Baz::VecT);
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(void) __builtin_vectorelements(FooT::VecT<long>);
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(void) __builtin_vectorelements(VecT<char>);
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constexpr int i4 = __builtin_vectorelements(veci4);
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constexpr int i4p8 = __builtin_vectorelements(veci4) + 8;
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}
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#if defined(__ARM_FEATURE_SVE)
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#include <arm_sve.h>
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consteval int consteval_elements() { // expected-error {{consteval function never produces a constant expression}}
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return __builtin_vectorelements(svuint64_t); // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}} // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}} // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}}
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}
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void test_bad_constexpr() {
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constexpr int eval = consteval_elements(); // expected-error {{initialized by a constant expression}} // expected-error {{not a constant expression}} // expected-note {{in call}} // expected-note {{in call}}
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constexpr int i32 = __builtin_vectorelements(svuint32_t); // expected-error {{initialized by a constant expression}} // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}}
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constexpr int i16p8 = __builtin_vectorelements(svuint16_t) + 16; // expected-error {{initialized by a constant expression}} // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}}
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constexpr int lambda = [] { return __builtin_vectorelements(svuint16_t); }(); // expected-error {{initialized by a constant expression}} // expected-note {{cannot determine number of elements for sizeless vectors in a constant expression}} // expected-note {{in call}}
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}
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#endif
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