0aab344104
This is the `ext_vector_type` alternative to D81083. This patch extends Clang to allow 'bool' as a valid vector element type (attribute ext_vector_type) in C/C++. This is intended as the canonical type for SIMD masks and facilitates clean vector intrinsic declarations. Vectors of i1 are supported on IR level and below down to many SIMD ISAs, such as AVX512, ARM SVE (fixed vector length) and the VE target (NEC SX-Aurora TSUBASA). The RFC on cfe-dev: https://lists.llvm.org/pipermail/cfe-dev/2020-May/065434.html Reviewed By: erichkeane Differential Revision: https://reviews.llvm.org/D88905
93 lines
6.3 KiB
C++
93 lines
6.3 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux-pc -fsyntax-only -verify -fexceptions -fcxx-exceptions %s -std=c++17
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// Note that this test depends on the size of long-long to be different from
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// int, so it specifies a triple.
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using FourShorts = short __attribute__((__vector_size__(8)));
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using TwoInts = int __attribute__((__vector_size__(8)));
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using EightInts = int __attribute__((__vector_size__(32)));
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using TwoUInts = unsigned __attribute__((__vector_size__(8)));
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using FourInts = int __attribute__((__vector_size__(16)));
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using FourUInts = unsigned __attribute__((__vector_size__(16)));
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using TwoLongLong = long long __attribute__((__vector_size__(16)));
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using FourLongLong = long long __attribute__((__vector_size__(32)));
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using TwoFloats = float __attribute__((__vector_size__(8)));
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using FourFloats = float __attribute__((__vector_size__(16)));
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using TwoDoubles = double __attribute__((__vector_size__(16)));
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using FourDoubles = double __attribute__((__vector_size__(32)));
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using EightBools = bool __attribute__((ext_vector_type(8)));
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EightInts eight_ints;
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EightBools eight_bools;
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EightBools other_eight_bools;
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bool one_bool;
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// Check the rules of the LHS/RHS of the conditional operator.
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void Operations() {
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// Legal binary
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// (void)(eight_bools | other_eight_bools);
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// (void)(eight_bools & other_eight_bools);
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// (void)(eight_bools ^ other_eight_bools);
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// (void)(~eight_bools);
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// (void)(!eight_bools);
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// // Legal comparison
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// (void)(eight_bools == other_eight_bools);
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// (void)(eight_bools != other_eight_bools);
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// (void)(eight_bools < other_eight_bools);
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// (void)(eight_bools <= other_eight_bools);
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// (void)(eight_bools > other_eight_bools);
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// (void)(eight_bools >= other_eight_bools);
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// // Legal assignments
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// (void)(eight_bools |= other_eight_bools);
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// (void)(eight_bools &= other_eight_bools);
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// (void)(eight_bools ^= other_eight_bools);
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// Illegal operators
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(void)(eight_bools || other_eight_bools); // expected-error@47 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools && other_eight_bools); // expected-error@48 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools + other_eight_bools); // expected-error@49 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools - other_eight_bools); // expected-error@50 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools * other_eight_bools); // expected-error@51 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools << other_eight_bools); // expected-error@52 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools >> other_eight_bools); // expected-error@53 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools / other_eight_bools); // expected-error@54 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools % other_eight_bools); // expected-error@55 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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// Illegal assignment
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(void)(eight_bools += other_eight_bools); // expected-error@58 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools -= other_eight_bools); // expected-error@59 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools *= other_eight_bools); // expected-error@60 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools <<= other_eight_bools); // expected-error@61 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools >>= other_eight_bools); // expected-error@62 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools /= other_eight_bools); // expected-error@63 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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(void)(eight_bools %= other_eight_bools); // expected-error@64 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightBools')}}
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// Illegal in/decrements
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(void)(eight_bools++); // expected-error@67 {{cannot increment value of type 'EightBools' (vector of 8 'bool' values)}}
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(void)(++eight_bools); // expected-error@68 {{cannot increment value of type 'EightBools' (vector of 8 'bool' values)}}
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(void)(eight_bools--); // expected-error@69 {{cannot decrement value of type 'EightBools' (vector of 8 'bool' values)}}
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(void)(--eight_bools); // expected-error@70 {{cannot decrement value of type 'EightBools' (vector of 8 'bool' values)}}
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// No implicit promotion
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(void)(eight_bools + eight_ints); // expected-error@73 {{invalid operands to binary expression ('EightBools' (vector of 8 'bool' values) and 'EightInts' (vector of 8 'int' values))}}
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(void)(eight_ints - eight_bools); // expected-error@74 {{invalid operands to binary expression ('EightInts' (vector of 8 'int' values) and 'EightBools' (vector of 8 'bool' values))}}
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}
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// Allow scalar-to-vector broadcast. Do not allow bool vector conversions.
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void Conversions() {
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(void)((long)eight_bools); // expected-error@79 {{C-style cast from vector 'EightBools' (vector of 8 'bool' values) to scalar 'long' of different size}}
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(void)((EightBools) one_bool); // Scalar-to-vector broadcast.
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(void)((char)eight_bools); // expected-error@81 {{C-style cast from vector 'EightBools' (vector of 8 'bool' values) to scalar 'char' of different size}}
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}
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void foo(const bool& X);
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// Disallow element-wise access.
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bool* ElementRefs() {
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eight_bools.y = false; // expected-error@88 {{illegal vector component name ''y''}}
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&eight_bools.z; // expected-error@89 {{illegal vector component name ''z''}}
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foo(eight_bools.w); // expected-error@90 {{illegal vector component name ''w''}}
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foo(eight_bools.wyx); // expected-error@91 {{illegal vector component name ''wyx''}}
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}
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