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[C++17] Support __GCC_[CON|DE]STRUCTIVE_SIZE (llvm#89446)
These macros are used by STL implementations to support implementation of std::hardware_destructive_interference_size and std::hardware_constructive_interference_size Fixes llvm#60174 --------- Co-authored-by: Louis Dionne <ldionne.2@gmail.com>
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Original file line number | Diff line number | Diff line change |
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// RUN: %clang_cc1 -E -dM -D__GCC_CONSTRUCTIVE_SIZE=1000 -D__GCC_DESTRUCTIVE_SIZE=1001 %s -verify -Weverything | FileCheck %s | ||
// RUN: %clang_cc1 -D__GCC_CONSTRUCTIVE_SIZE=1000 -D__GCC_DESTRUCTIVE_SIZE=1001 %s -verify -Weverything | ||
// RUN: %clang_cc1 -E -dM -U__GCC_CONSTRUCTIVE_SIZE -U__GCC_DESTRUCTIVE_SIZE %s -verify -Weverything | FileCheck --check-prefix DISABLED %s | ||
// expected-no-diagnostics | ||
|
||
// Validate that we can set a new value on the command line without issuing any | ||
// diagnostics and that we can disabled the macro on the command line without | ||
// issuing any diagnostics. | ||
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||
// CHECK: #define __GCC_CONSTRUCTIVE_SIZE 1000 | ||
// CHECK: #define __GCC_DESTRUCTIVE_SIZE 1001 | ||
// DISABLED-NOT: __GCC_CONSTRUCTIVE_SIZE | ||
// DISABLED-NOT: __GCC_DESTRUCTIVE_SIZE | ||
|
||
int main() { | ||
return 0; | ||
} |
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