2bcda6bb28
This implements the likelihood attribute for the switch statement. Based on the discussion in D85091 and D86559 it only handles the attribute when placed on the case labels or the default labels. It also marks the likelihood attribute as feature complete. There are more QoI patches in the pipeline. Differential Revision: https://reviews.llvm.org/D89210
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -fms-compatibility -std=c++11 -E -P %s -o - | FileCheck %s --check-prefixes=CHECK,ITANIUM --implicit-check-not=:
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// RUN: %clang_cc1 -triple i386-windows -fms-compatibility -std=c++11 -E -P %s -o - | FileCheck %s --check-prefixes=CHECK,WINDOWS --implicit-check-not=:
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#define CXX11(x) x: __has_cpp_attribute(x)
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// CHECK: clang::fallthrough: 201603L
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CXX11(clang::fallthrough)
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// CHECK: selectany: 0
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CXX11(selectany)
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// The attribute name can be bracketed with double underscores.
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// CHECK: clang::__fallthrough__: 201603L
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CXX11(clang::__fallthrough__)
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// The scope cannot be bracketed with double underscores unless it is
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// for gnu or clang.
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// CHECK: __gsl__::suppress: 0
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CXX11(__gsl__::suppress)
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// We do somewhat support the __clang__ vendor namespace, but it is a
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// predefined macro and thus we encourage users to use _Clang instead.
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// Because of this, we do not support __has_cpp_attribute for that
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// vendor namespace.
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//
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// Note, we can't use CXX11 here because it will expand __clang__ to 1
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// too early.
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// CHECK: 1::fallthrough: 0
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__clang__::fallthrough: __has_cpp_attribute(__clang__::fallthrough)
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// CHECK: _Clang::fallthrough: 201603L
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CXX11(_Clang::fallthrough)
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// CHECK: __nodiscard__: 201907L
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CXX11(__nodiscard__)
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// CHECK: __gnu__::__const__: 1
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CXX11(__gnu__::__const__)
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// Test that C++11, target-specific attributes behave properly.
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// CHECK: gnu::mips16: 0
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CXX11(gnu::mips16)
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// Test for standard attributes as listed in C++2a [cpp.cond] paragraph 6.
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CXX11(assert)
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CXX11(carries_dependency)
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CXX11(deprecated)
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CXX11(ensures)
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CXX11(expects)
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CXX11(fallthrough)
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CXX11(likely)
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CXX11(maybe_unused)
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CXX11(no_unique_address)
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CXX11(nodiscard)
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CXX11(noreturn)
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CXX11(unlikely)
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// FIXME(201806L) CHECK: assert: 0
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// CHECK: carries_dependency: 200809L
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// CHECK: deprecated: 201309L
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// FIXME(201806L) CHECK: ensures: 0
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// FIXME(201806L) CHECK: expects: 0
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// CHECK: fallthrough: 201603L
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// CHECK: likely: 201803L
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// CHECK: maybe_unused: 201603L
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// ITANIUM: no_unique_address: 201803L
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// WINDOWS: no_unique_address: 0
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// CHECK: nodiscard: 201907L
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// CHECK: noreturn: 200809L
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// CHECK: unlikely: 201803L
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// Test for Microsoft __declspec attributes
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#define DECLSPEC(x) x: __has_declspec_attribute(x)
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// CHECK: uuid: 1
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// CHECK: __uuid__: 1
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DECLSPEC(uuid)
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DECLSPEC(__uuid__)
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// CHECK: fallthrough: 0
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DECLSPEC(fallthrough)
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