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86de9cd1f1
When assertions are disabled, the upstream build system disables LLVM_ENABLE_ABI_BREAKING_CHECKS by default. Though the upstream build system allows it to be force-enabled, it looks like that is not a well-tested build-time configuration. Therefore, always disable LLVM_ENABLE_ABI_BREAKING_CHECKS when assertions are disabled, which will also save some more runtime cost when people use WITHOUT_LLVM_ASSERTIONS. PR: 280562 MFC after: 1 month (cherry picked from commit 1c83996beda7b6a382857c318f46daefcb6bd84c)
66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/*===------- llvm/Config/abi-breaking.h - llvm configuration -------*- C -*-===*/
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/* */
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/* Part of the LLVM Project, under the Apache License v2.0 with LLVM */
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/* Exceptions. */
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/* See https://llvm.org/LICENSE.txt for license information. */
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/* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception */
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/* */
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/*===----------------------------------------------------------------------===*/
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/* This file controls the C++ ABI break introduced in LLVM public header. */
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#ifndef LLVM_ABI_BREAKING_CHECKS_H
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#define LLVM_ABI_BREAKING_CHECKS_H
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/* Define to enable checks that alter the LLVM C++ ABI */
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#ifdef NDEBUG
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#define LLVM_ENABLE_ABI_BREAKING_CHECKS 0
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#else
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#define LLVM_ENABLE_ABI_BREAKING_CHECKS 1
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#endif
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/* Define to enable reverse iteration of unordered llvm containers */
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#define LLVM_ENABLE_REVERSE_ITERATION 0
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/* Allow selectively disabling link-time mismatch checking so that header-only
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ADT content from LLVM can be used without linking libSupport. */
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#if !defined(LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING) || !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
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// ABI_BREAKING_CHECKS protection: provides link-time failure when clients build
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// mismatch with LLVM
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#if defined(_MSC_VER)
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// Use pragma with MSVC
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#define LLVM_XSTR(s) LLVM_STR(s)
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#define LLVM_STR(s) #s
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#pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS))
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#undef LLVM_XSTR
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#undef LLVM_STR
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#elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch
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// FIXME: Implement checks without weak.
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#elif defined(__cplusplus)
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#if !(defined(_AIX) && defined(__GNUC__) && !defined(__clang__))
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#define LLVM_HIDDEN_VISIBILITY __attribute__ ((visibility("hidden")))
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#else
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// GCC on AIX does not support visibility attributes. Symbols are not
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// exported by default on AIX.
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#define LLVM_HIDDEN_VISIBILITY
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#endif
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namespace llvm {
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#if LLVM_ENABLE_ABI_BREAKING_CHECKS
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extern int EnableABIBreakingChecks;
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LLVM_HIDDEN_VISIBILITY
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__attribute__((weak)) int *VerifyEnableABIBreakingChecks =
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&EnableABIBreakingChecks;
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#else
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extern int DisableABIBreakingChecks;
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LLVM_HIDDEN_VISIBILITY
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__attribute__((weak)) int *VerifyDisableABIBreakingChecks =
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&DisableABIBreakingChecks;
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#endif
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}
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#undef LLVM_HIDDEN_VISIBILITY
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#endif // _MSC_VER
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#endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
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#endif
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