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* Fix incorrectly finding 'executable' directories instead of files.Manuel Klimek2013-06-17
| | | | | | | | | | | | | | | This broke for example the 'not' utility, if a directory called 'FileCheck' is executable and in the path before the actual 'FileCheck'. This patch steals the implementation of the "old" PathV1 canExecute implementation: - checks for R_OK (file readable): this is necessary for executing scripts; we should not regress here unless we have good reasons - checks for S_ISREG; if we want to get rid of this, we'd need to change all callers who already made the assumption when depending on Path V1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184074 91177308-0d34-0410-b5e6-96231b3b80d8
* Add GetCurrentDirectory back.Rafael Espindola2013-06-14
| | | | | | | | It looks like clang-tools-extra/unittests/cpp11-migrate/TransformTest.cpp depends on the behaviour of the old one on Windows. Maybe a difference between GetCurrentDirectoryA and GetCurrentDirectoryW? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184009 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace use of PathV1.h in MCContext.cpp.Rafael Espindola2013-06-14
| | | | | | GetCurrentDirectory is now unused. Remove it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184003 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace use of PathV1.h in Program.cpp.Rafael Espindola2013-06-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183996 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use PathV1.h in Signals.h.Rafael Espindola2013-06-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183947 91177308-0d34-0410-b5e6-96231b3b80d8
* Have sys::FindProgramByName return a std::string.Rafael Espindola2013-06-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183928 91177308-0d34-0410-b5e6-96231b3b80d8
* [Support] Fix handle and memory leak for processes that are not waited forReid Kleckner2013-06-13
| | | | | | | | | | | | Execute's Data parameter is now optional, so we won't allocate memory for it on Windows and we'll close the process handle. The Unix code should probably do something similar to avoid accumulation of zombie children that haven't been waited on. Tested on Linux and Windows. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183906 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the program class.Rafael Espindola2013-06-12
| | | | | | | It was only used to implement ExecuteAndWait and ExecuteNoWait. Expose just those two functions and make Execute and Wait implementations details. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183864 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::getMagicNumber.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183839 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::isAbsolute.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183836 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::isAbsolute().Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183835 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::getSuffix.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183833 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove sys::CopyFile.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183831 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the old file memory mapping functions.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183828 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::createFileOnDisk.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183827 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::makeExecutableOnDisk.Rafael Espindola2013-06-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183826 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::getDirname.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183780 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::getBasename.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183779 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::getLast.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183778 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove GetRootDirectory.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183775 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove GetUserHomeDirectory.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183773 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove GetSystemLibraryPaths.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183770 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove Path::GetBitcodeLibraryPaths.Rafael Espindola2013-06-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183765 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove declaration of __clear_cache for __APPLE__. <rdar://problem/13924072>Bob Wilson2013-05-19
| | | | | | | | | | | | | | | This fixes a bootstrapping problem with builds for Apple ARM targets. Clang had the wrong prototype for __clear_cache with ARM targets. Rafael fixed that in clang svn r181784 and r181810, but without those changes, we can't build this code for ARM because clang reports an error about the declaration in Memory.inc not matching the builtin declaration. Some of our buildbots need to use an older compiler that doesn't have the clang fix. Since __clear_cache is never used here when __APPLE__ is defined, I'm just conditionalizing the declaration to match that. I also moved the declaration of sys_icache_invalidate inside the conditional for __APPLE__ while I was at it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182223 91177308-0d34-0410-b5e6-96231b3b80d8
* Invalidate instruction cache when setting memory to be executable.Tim Northover2013-05-19
| | | | | | | | | lli's remote MCJIT code calls setExecutable just prior to running code. In line with Darwin behaviour this seems to be the place to invalidate any caches needed so that relocations can take effect properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182213 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix __clear_cache declaration.Rafael Espindola2013-05-14
| | | | | | This fixes the build with gcc in gnu++98 and gnu++11 mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181811 91177308-0d34-0410-b5e6-96231b3b80d8
* Declare __clear_cache.Rafael Espindola2013-05-14
| | | | | | | | GCC declares __clear_cache in the gnu modes (-std=gnu++98, -std=gnu++11), but not in the strict modes (-std=c++98, -std=c++11). This patch declares it and therefore fixes the build when using one of the strict modes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181785 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: use __clear_cache under GCCish environmentsTim Northover2013-05-04
| | | | | | | | | AArch64 is going to need some kind of cache-invalidation in order to successfully JIT since it has a weak memory-model. This is provided by a __clear_cache builtin in libgcc, which acts very much like the 32-bit ARM equivalent (on platforms where it exists). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181129 91177308-0d34-0410-b5e6-96231b3b80d8
* [SystemZ] Support System Z as host architectureUlrich Weigand2013-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The llvm::sys::AddSignalHandler function (as well as related routines) in lib/Support/Unix/Signals.inc currently registers a signal handler routine via "sigaction". When this handler is called due to a SIGSEGV, SIGILL or similar signal, it will show a stack backtrace, deactivate the handler, and then simply return to the operating system. The intent is that the OS will now retry execution at the same location as before, which ought to again trigger the same error condition and cause the same signal to be delivered again. Since the hander is now deactivated, the OS will take its default action (usually, terminate the program and possibly create a core dump). However, this method doesn't work reliably on System Z: With certain signals (namely SIGILL, SIGFPE, and SIGTRAP), the program counter stored by the kernel on the signal stack frame (which is the location where execution will resume) is not the instruction that triggered the fault, but then instruction *after it*. When the LLVM signal handler simply returns to the kernel, execution will then resume at *that* address, which will not trigger the problem again, but simply go on and execute potentially unrelated code leading to random errors afterwards. To fix this, the patch simply goes and re-raises the signal in question directly from the handler instead of returning from it. This is done only on System Z and only for those signals that have this particular problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181010 91177308-0d34-0410-b5e6-96231b3b80d8
* Inline variable into the #ifdef block where it's used.Benjamin Kramer2013-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180688 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typo. Stupid me.Joerg Sonnenberger2013-04-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180686 91177308-0d34-0410-b5e6-96231b3b80d8
* Only use cxxabi.h's demangler, if it is actually available.Joerg Sonnenberger2013-04-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180684 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a function to check if an argument list is too long.Rafael Espindola2013-04-11
| | | | | | | | | This will be used in clang to decide if it should create an @file or not. It will be tested on the clang side. Patch by Nathan Froyd. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179285 91177308-0d34-0410-b5e6-96231b3b80d8
* <rdar://problem/13551789> Fix yet another race in unique_file.Douglas Gregor2013-04-05
| | | | | | | | | | | If the directory that will contain the unique file doesn't exist when we tried to create the file, but another process creates it before we get a chance to try creating it, we would bail out rather than try to create the unique file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178908 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new watchdog timer interface. The interface does not permit handling ↵Nick Lewycky2013-03-26
| | | | | | | | | | timeouts, so it's only really useful if you're going to crash anyways. Use it in the pretty stack trace printer to kill the compiler if we hang while printing the stack trace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177962 91177308-0d34-0410-b5e6-96231b3b80d8
* Android uses cacheflush(long start, long end, long flags) for MIPS.Akira Hatanaka2013-03-14
| | | | | | | | Patch by Stephen Hines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177101 91177308-0d34-0410-b5e6-96231b3b80d8
* [Support] Fix lifetime of file descriptors when using MemoryBuffer.Michael J. Spencer2013-03-14
| | | | | | | Clients of MemoryBuffer::getOpenFile expect it not to take ownership of the file descriptor passed in. So don't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176995 91177308-0d34-0410-b5e6-96231b3b80d8
* [PathV2] In llvm::sys::fs::unique_file, make sure it doesn't fall into an ↵Argyrios Kyrtzidis2013-02-28
| | | | | | | | | | | infinite loop by constantly trying to create the parent path. This can happen if the path is a relative filename and the current directory was removed. Thanks to Daniel D. for the hint in fixing it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176226 91177308-0d34-0410-b5e6-96231b3b80d8
* Rewrite comments.Dan Gohman2013-02-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175651 91177308-0d34-0410-b5e6-96231b3b80d8
* Add comment in Memory.inc explaining r175646.Krzysztof Parzyszek2013-02-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175650 91177308-0d34-0410-b5e6-96231b3b80d8
* SIGQUIT is a "kill" signal, rather than an "int" signal, in this context.Dan Gohman2013-02-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175648 91177308-0d34-0410-b5e6-96231b3b80d8
* On PowerPC, the cache-flush instructions dcbf and icbi are treated asKrzysztof Parzyszek2013-02-20
| | | | | | | loads. On FreeBSD, add PROT_READ page protection flag before flushing cache. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175646 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix initialization-order bug in llvm::Support::TimeValue. TimeValue::now() ↵Alexey Samsonov2013-02-19
| | | | | | is explicitly called during module initialization of lib/Support/Process.cpp. It reads the field of global object PosixZeroTime, which is not guaranteed to be initialized at this point. Found by AddressSanitizer with -fsanitize=init-order option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175509 91177308-0d34-0410-b5e6-96231b3b80d8
* Workaround an MSan false positive.Evgeniy Stepanov2013-02-14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175156 91177308-0d34-0410-b5e6-96231b3b80d8
* More MSan/ASan annotations.Evgeniy Stepanov2013-02-04
| | | | | | | | | | | | | | | This change lets us bootstrap LLVM/Clang under ASan and MSan. It contains fixes for 2 issues: - X86JIT reads return address from stack, which MSan does not know is initialized. - bugpoint tests run binaries with RLIMIT_AS. This does not work with certain Sanitizers. We are no longer including config.h in Compiler.h with this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174306 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix gcc/printf/ISO C++ warningEdwin Vane2013-01-28
| | | | | | | | | | | | | | Remove the use of the 't' length modifier to avoid a gcc warning. Based on usage, 32 bits of precision is good enough for printing a stack offset for a stack trace. 't' length modifier isn't in C++03 but it *is* in C++11. Added a FIXME to reintroduce once LLVM makes the switch to C++11. Reviewer: gribozavr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173711 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a race condition in llvm::sys::path::unique_file: when we end upDouglas Gregor2013-01-10
| | | | | | | | failing to create the unique file because the path doesn't exist, don't fail if someone else manages to create the path before we do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172032 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the internal PrintStackTrace function that is used for ↵Argyrios Kyrtzidis2013-01-09
| | | | | | | | llvm::sys::PrintStackTraceOnErrorSignal(), into a new function llvm::sys::PrintStackTrace, so that it's available to clients for logging purposes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171989 91177308-0d34-0410-b5e6-96231b3b80d8
* Eric thought that Darwin was right to use -1 consistently rather thanChandler Carruth2013-01-05
| | | | | | | | | | | leaving this undefined, and despite the sentence in the standard that seems to require it, I'll cede the point and assume its a bug in the wording. Other parts of POSIX regularly allow for things to be -1 instead of undefined, this should too. Makes things more consistent too. This should have to real impact for folks though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171574 91177308-0d34-0410-b5e6-96231b3b80d8
* Try to suppress the use of clock_gettime on Darwin which apparantlyChandler Carruth2013-01-05
| | | | | | | | | | | | | | | | | defines _POSIX_CPUTIME but doesn't support the clock_* functions. I don't test the value of _POSIX_CPUTIME because the spec merely says that if it is defined, the CPU-specific timers are available, whereas it says that _POSIX_TIMERS must be defined and defined to a value greater than zero. However, this may not work, as the POSIX spec clearly states: "If the symbolic constant _POSIX_CPUTIME is defined, then the symbolic constant _POSIX_TIMERS shall also be defined by the implementation to have the value 200112L." If this doesn't work, I'll add more hacks for Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171565 91177308-0d34-0410-b5e6-96231b3b80d8
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