44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
// RUN: %clang_cc1 -fexperimental-new-constant-interpreter -verify=expected,both %s
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// RUN: %clang_cc1 -verify=ref,both %s
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typedef int __attribute__((vector_size(16))) VI4;
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constexpr VI4 A = {1,2,3,4};
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static_assert(A[0] == 1, ""); // ref-error {{not an integral constant expression}}
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static_assert(A[1] == 2, ""); // ref-error {{not an integral constant expression}}
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static_assert(A[2] == 3, ""); // ref-error {{not an integral constant expression}}
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static_assert(A[3] == 4, ""); // ref-error {{not an integral constant expression}}
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/// VectorSplat casts
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typedef __attribute__(( ext_vector_type(4) )) float float4;
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constexpr float4 vec4_0 = (float4)0.5f;
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static_assert(vec4_0[0] == 0.5, ""); // ref-error {{not an integral constant expression}}
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static_assert(vec4_0[1] == 0.5, ""); // ref-error {{not an integral constant expression}}
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static_assert(vec4_0[2] == 0.5, ""); // ref-error {{not an integral constant expression}}
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static_assert(vec4_0[3] == 0.5, ""); // ref-error {{not an integral constant expression}}
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constexpr int vec4_0_discarded = ((float4)12.0f, 0);
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/// From constant-expression-cxx11.cpp
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namespace Vector {
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typedef int __attribute__((vector_size(16))) VI4;
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constexpr VI4 f(int n) {
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return VI4 { n * 3, n + 4, n - 5, n / 6 };
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}
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constexpr auto v1 = f(10);
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static_assert(__builtin_vectorelements(v1) == (16 / sizeof(int)), "");
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typedef double __attribute__((vector_size(32))) VD4;
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constexpr VD4 g(int n) {
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return (VD4) { n / 2.0, n + 1.5, n - 5.4, n * 0.9 };
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}
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constexpr auto v2 = g(4);
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static_assert(__builtin_vectorelements(v2) == (32 / sizeof(double)), "");
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}
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/// FIXME: We need to support BitCasts between vector types.
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namespace {
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typedef float __attribute__((vector_size(16))) VI42;
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constexpr VI42 A2 = A; // expected-error {{must be initialized by a constant expression}}
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}
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