Revert "Initial implementation of optimization bisect support."

This reverts commit r267022, due to an ASan failure:

  http://lab.llvm.org:8080/green/job/clang-stage2-cmake-RgSan_check/1549

llvm-svn: 267115

1 files changed, 0 insertions, 39 deletions

diff --git a/llvm/test/Other/opt-bisect-helper.py b/llvm/test/Other/opt-bisect-helper.py
deleted file mode 100755
index d75950f11d8..00000000000
--- a/llvm/test/Other/opt-bisect-helper.py
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env python
-
-import os
-import sys
-import argparse
-import subprocess
-
-parser = argparse.ArgumentParser()
-
-parser.add_argument('--start', type=int, default=0)
-parser.add_argument('--end', type=int, default=(1 << 32))
-parser.add_argument('--optcmd', default=("opt"))
-parser.add_argument('--filecheckcmd', default=("FileCheck"))
-parser.add_argument('--prefix', default=("CHECK-BISECT"))
-parser.add_argument('--test', default=(""))
-
-args = parser.parse_args()
-
-start = args.start
-end = args.end
-
-opt_command = [args.optcmd, "-O2", "-opt-bisect-limit=%(count)s", "-S", args.test]
-check_command = [args.filecheckcmd, args.test, "--check-prefix=%s" % args.prefix]
-last = None
-while start != end and start != end-1:
-    count = int(round(start + (end - start)/2))
-    cmd = [x % {'count':count} for x in opt_command]
-    print("opt: " + str(cmd))
-    opt_result = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-    filecheck_result = subprocess.Popen(check_command, stdin=opt_result.stdout)
-    opt_result.stdout.close()
-    opt_result.stderr.close()
-    filecheck_result.wait()
-    if filecheck_result.returncode == 0:
-        start = count
-    else:
-        end = count
-
-print("Last good count: %d" % start)