diff options
| -rwxr-xr-x | llvm/utils/bisect-skip-count | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/utils/bisect-skip-count b/llvm/utils/bisect-skip-count index b18b4f41481..f4f8ddcec79 100755 --- a/llvm/utils/bisect-skip-count +++ b/llvm/utils/bisect-skip-count @@ -1,6 +1,25 @@ #!/usr/bin/env python # This script is used to bisect skip and count arguments for --debug-counter. # It is similar to bisect, except it understands how to increase skip and decrease count +# +# Typical usage: +# +# bisect-skip-count bisect-command.sh "%(skip)d" "%(count)d" 2>&1 | tee bisect.out +# +# bisect-command.sh is something like this: +# #! /bin/bash +# +# skip=$1 +# count=$2 +# +# opt -debug-counter=my-counter-skip=${skip},my-counter-count=${count} +# ... Test output of opt and exit zero for pass, non-zero for fail +# +# Examine bisect.out to look for "Last good skip" and "Last good +# count" to find the values of the counter that produce a passing +# result. Incrementing the last good count by one or decrementing the +# last good skip by one should produce a failure. +# import os import sys import argparse |
