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* Build Darwin libclang_rt libraries against real SDKs.Bob Wilson2014-11-1013-490/+0
| | | | | | | | | | | The minimal fake SDK was very useful in allowing us to build for all Darwin platforms without needing access to the real SDKs, but it did not support building any of the sanitizer runtimes. It's important to fix that. As a consequence, if you don't have the iOS SDKs installed, we will now skip building the iOS-specific libclang_rt libraries. rdar://problem/18825276 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@221621 91177308-0d34-0410-b5e6-96231b3b80d8
* AArch64: add support for ARM64 iOS versions of compiler-rt.Tim Northover2014-10-083-6/+6
| | | | | | | | Just a dummy directory and a few sane choices in the Darwin SDK. rdar://problem/18575597 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@219323 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typosAlp Toker2014-05-153-10/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@208841 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply "PGO: Statically generate data structures"Duncan P. N. Exon Smith2014-03-172-0/+2
| | | | | | | Reapply r204079 and r204083, this time with stubs for fputc in compiler-rt. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@204091 91177308-0d34-0410-b5e6-96231b3b80d8
* SDKs: Add inttypes.h to the darwin SDK stubJustin Bogner2014-01-071-0/+86
| | | | | | | | This unbreaks the configure build on darwin, where we build with the stub SDK in -isysroot. Oddly, the cmake build doesn't have this restriction, which probably means the cmake configs are out of date. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@198676 91177308-0d34-0410-b5e6-96231b3b80d8
* Declare 'strerror' so that we can use it with errno.Bill Wendling2013-06-271-0/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@185105 91177308-0d34-0410-b5e6-96231b3b80d8
* Add 'errno.h' to the Darwin SDK.Bill Wendling2013-06-272-0/+48
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@185104 91177308-0d34-0410-b5e6-96231b3b80d8
* Performance improvement.Bill Wendling2013-05-2310-7/+189
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using fwrite and fread was very *very* slow. The resulting code was multiple times slower than GCC's implementation of gcov. Replace the fwrite/fread system with an mmap() version. If the `.gcda' file doesn't exist, we (re)allocate a buffer that we write into. That gets written to the `.gcda' file in one chunk. If the `.gcda' file already exists, we simply mmap() the file, modify the mapped data, and use msync() to write the contents out to disk. It's much easier than implementing our own buffering scheme, and we don't have to use fwrite's and fread's buffering. For those who are numbers-oriented, here are some timings: GCC Verison ----------- `.gcda' files don't exist: 23s `.gcda' files do exist: 14s LLVM Version (before this change) --------------------------------- `.gcda' files don't exist: 28s `.gcda' files do exist: 28s LLVM Version (with this change) ------------------------------- `.gcda' files don't exist: 18s `.gcda' files do exist: 4s It's a win-win-win-win-lose-win-win scenario! <rdar://problem/13466086> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@182563 91177308-0d34-0410-b5e6-96231b3b80d8
* Try to improve performance by using a read/write buffer instead of I/O.Bill Wendling2013-05-154-0/+4
| | | | | | | | | | | The calls to fwrite/fread can be very expensive. GCC avoids this by using a buffer to read and write from the file, thus limiting the number of fwrite/fread calls. <rdar://problem/13466086> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@181924 91177308-0d34-0410-b5e6-96231b3b80d8
* I was wrong in my testing.Bill Wendling2013-05-032-2/+0
| | | | | | | There isn't a speedup when using unbuffered I/O. It slows it down in fact. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@181060 91177308-0d34-0410-b5e6-96231b3b80d8
* Use unbuffered I/O. This reduces the runtime by about half. Our ↵Bill Wendling2013-05-032-0/+2
| | | | | | implementation is now only about 5 times slower than gcc's. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@180980 91177308-0d34-0410-b5e6-96231b3b80d8
* Add declaration for linux.Bill Wendling2013-03-201-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177601 91177308-0d34-0410-b5e6-96231b3b80d8
* Create a coverage initialization function.Bill Wendling2013-03-201-0/+1
| | | | | | | | | | | | This function replaces the call of `atexit' from being generated in the compile units. Basically, it registers the "writeout" and "flush" functions (if present). It will generate calls to the `atexit' function for cleanups and final writeout functions, but only once. This is better than checking for `main', because a library may not have a `main' function in it. <rdar://problem/12439551> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177578 91177308-0d34-0410-b5e6-96231b3b80d8
* Support for building the ubsan runtime when using the autoconf build system onRichard Smith2012-11-131-3/+13
| | | | | | | | Darwin. Patch by Jean-Daniel Dupas, tweaked by Jonathan Sauer, simplified somewhat by me. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@167889 91177308-0d34-0410-b5e6-96231b3b80d8
* Update linux stdio.h to support the recent additions to GCDAProfiling.Benjamin Kramer2012-09-171-0/+7
| | | | | | Hopefully unbreaks compiler-rt build on linux. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@164025 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for reading the GCDA file and merging the arc information.Bill Wendling2012-09-141-0/+13
| | | | | | | | | | With the advent of the __llvm_gcov_flush function, we need to be able to merge counts into the .gcda files in an intelligent manner. This involves reading the file if it exists, adding the counts together, and then writing the results. <rdar://problem/12185886> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163923 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix atoi stub for linux introduced in r157573. This fixes compiler-rt build ↵Alexey Samsonov2012-05-291-1/+1
| | | | | | on linux. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157600 91177308-0d34-0410-b5e6-96231b3b80d8
* Add stub for 'atoi'.Bill Wendling2012-05-282-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157573 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the build on 32 bit hosts.Benjamin Kramer2012-03-302-0/+4
| | | | | | | | | - Add memcpy and memcmp to the stub headers. - __uint128_t is not available on 32 bit platforms. It's also unused so just comment it out for now. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@153779 91177308-0d34-0410-b5e6-96231b3b80d8
* SDK/linux: Fix braindead pasto, caught by Matt Beaumont-Gay.Daniel Dunbar2011-12-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@146188 91177308-0d34-0410-b5e6-96231b3b80d8
* SDKs: Sketch an initial stub SDK for Linux, I believe this suffices for buildingDaniel Dunbar2011-12-0810-0/+248
| | | | | | the main compiler-rt and profile modules, at least on x86. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@146131 91177308-0d34-0410-b5e6-96231b3b80d8
* build/SDKs: Sketch a minimal stub SDK for Darwin.Daniel Dunbar2011-11-168-0/+198
- Motivation is explained in the README, but basically it is convenient to be able to build compiler-rt free standing. Since our external dependencies are so small, we can achieve this relatively easily by just stubbing out the declarations of the external dependencies. - This is in no way, shape, or form intended to be complete, it is just the minimal stubs necessary to support the stuff we use. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144843 91177308-0d34-0410-b5e6-96231b3b80d8
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