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llvm-mirror/include/llvm/Config/abi-breaking.h.cmake
Mandeep Singh Grang 188048610f [cmake] Enable reverse iteration by default through build macro
Summary:
Reverse iteration can be turned on, by default, by setting -DLLVM_REVERSE_ITERATION:BOOL=ON during cmake.
With this enabled, we can uncover lots of cases of non-determinism in codegen by simply running our tests (without any other change).
We can then setup a buildbot which will have this turned on by default. Initially, a lot of unit tests will fail in this configuration.
Once we start fixing non-determinism issues, we can gradually make this a blocker for patches.

Reviewers: davide, dblaikie, mehdi_amini, dberlin

Reviewed By: dblaikie

Subscribers: probinson, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D33908

llvm-svn: 304757
2017-06-06 00:36:09 +00:00

51 lines
2.1 KiB
CMake

/*===------- llvm/Config/abi-breaking.h - llvm configuration -------*- C -*-===*/
/* */
/* The LLVM Compiler Infrastructure */
/* */
/* This file is distributed under the University of Illinois Open Source */
/* License. See LICENSE.TXT for details. */
/* */
/*===----------------------------------------------------------------------===*/
/* This file controls the C++ ABI break introduced in LLVM public header. */
#ifndef LLVM_ABI_BREAKING_CHECKS_H
#define LLVM_ABI_BREAKING_CHECKS_H
/* Define to enable checks that alter the LLVM C++ ABI */
#cmakedefine01 LLVM_ENABLE_ABI_BREAKING_CHECKS
/* Define to enable reverse iteration of unordered llvm containers */
#cmakedefine01 LLVM_ENABLE_REVERSE_ITERATION
/* Allow selectively disabling link-time mismatch checking so that header-only
ADT content from LLVM can be used without linking libSupport. */
#if !LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
// ABI_BREAKING_CHECKS protection: provides link-time failure when clients build
// mismatch with LLVM
#if defined(_MSC_VER)
// Use pragma with MSVC
#define LLVM_XSTR(s) LLVM_STR(s)
#define LLVM_STR(s) #s
#pragma detect_mismatch("LLVM_ENABLE_ABI_BREAKING_CHECKS", LLVM_XSTR(LLVM_ENABLE_ABI_BREAKING_CHECKS))
#undef LLVM_XSTR
#undef LLVM_STR
#elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch
// FIXME: Implement checks without weak.
#elif defined(__cplusplus)
namespace llvm {
#if LLVM_ENABLE_ABI_BREAKING_CHECKS
extern int EnableABIBreakingChecks;
__attribute__((weak, visibility ("hidden"))) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks;
#else
extern int DisableABIBreakingChecks;
__attribute__((weak, visibility ("hidden"))) int *VerifyDisableABIBreakingChecks = &DisableABIBreakingChecks;
#endif
}
#endif // _MSC_VER
#endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
#endif