I think setting `cc1_env["LLVM_PROFILE_FILE"] = os.devnull` would be simpler.
vedant > On Mar 21, 2016, at 7:55 PM, Chris Bieneman via cfe-commits > <cfe-commits@lists.llvm.org> wrote: > > Author: cbieneman > Date: Mon Mar 21 21:55:40 2016 > New Revision: 264021 > > URL: http://llvm.org/viewvc/llvm-project?rev=264021&view=rev > Log: > [Perf-training] Fixing an issue with multi-threading PGO generation > > When LIT parallelizes the profraw file generation we need to generate unique > temp filenames then clean them up after the driver executes. > > Modified: > cfe/trunk/utils/perf-training/perf-helper.py > > Modified: cfe/trunk/utils/perf-training/perf-helper.py > URL: > http://llvm.org/viewvc/llvm-project/cfe/trunk/utils/perf-training/perf-helper.py?rev=264021&r1=264020&r2=264021&view=diff > ============================================================================== > --- cfe/trunk/utils/perf-training/perf-helper.py (original) > +++ cfe/trunk/utils/perf-training/perf-helper.py Mon Mar 21 21:55:40 2016 > @@ -16,6 +16,7 @@ import argparse > import time > import bisect > import shlex > +import tempfile > > test_env = { 'PATH' : os.environ['PATH'] } > > @@ -149,10 +150,12 @@ def cc1(args): > > # clear the profile file env, so that we don't generate profdata > # when capturing the cc1 command > + handle, profraw_file = tempfile.mkstemp() > + os.close(handle) > cc1_env = test_env > - cc1_env["LLVM_PROFILE_FILE"] = "driver.prfraw" > + cc1_env["LLVM_PROFILE_FILE"] = profraw_file > cc1_cmd = get_cc1_command_for_args(cmd, cc1_env) > - os.remove("driver.prfraw") > + os.remove(profraw_file) > > subprocess.check_call(cc1_cmd) > return 0; > > > _______________________________________________ > cfe-commits mailing list > cfe-commits@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
