From: Raphael Isemann Date: Mon, 17 May 2021 09:02:36 +0000 (+0200) Subject: [lldb] Let dotest check for the `cassert` header instead of `algorithm` for libc... X-Git-Tag: llvmorg-14-init~6453 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b614eb4ea6ce047daebc0517eb4efa83123fe58;p=platform%2Fupstream%2Fllvm.git [lldb] Let dotest check for the `cassert` header instead of `algorithm` for libc++ check This is just a dotest check to see if we can compile a simple program that uses libc++. Right now we are parsing the rather big `algorithm` header in the test program, but the test really just checks whether we can find *any* libc++ headers and link against some libc++ SO. Using the much smaller `cassert` header for checking whether we can find libc++ headers speeds up this check by a bit. After some incredibly unscientific performance testing this saves a few seconds when running the test suite on Linux (on macOS we hardcoded that libc++ is always there, so this check won't be used there and we don't save any time). Reviewed By: jankratochvil Differential Revision: https://reviews.llvm.org/D101056 --- diff --git a/lldb/packages/Python/lldbsuite/test/dotest.py b/lldb/packages/Python/lldbsuite/test/dotest.py index 6e5bd6b..dc46f21 100644 --- a/lldb/packages/Python/lldbsuite/test/dotest.py +++ b/lldb/packages/Python/lldbsuite/test/dotest.py @@ -751,7 +751,7 @@ def canRunLibcxxTests(): with tempfile.NamedTemporaryFile() as f: cmd = [configuration.compiler, "-xc++", "-stdlib=libc++", "-o", f.name, "-"] p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True) - _, stderr = p.communicate("#include \nint main() {}") + _, stderr = p.communicate("#include \nint main() {}") if not p.returncode: return True, "Compiling with -stdlib=libc++ works" return False, "Compiling with -stdlib=libc++ fails with the error: %s" % stderr