DiffOutput.sh

   1 #!/bin/sh
   2 #
   3 # NAME
   4 #     DiffOutput.sh
   5 #
   6 # SYNOPSIS
   7 #     DiffOutput.sh <diff&opts> <testtype> <testname> [<goodoutput>]
   8 #
   9 # DESCRIPTION
  10 #     DiffOutput.sh looks for a file named Output/<testname>.out-<testtype>
  11 #     and uses GNU diff to compare it against the file
  12 #     Output/<testname>.out-<goodoutput>.  This script is used to verify the
  13 #     results of programs run in the LLVM test suite. By default,
  14 #     <goodoutput> is "nat"; that is, test results are compared with output
  15 #     from the program compiled with the native compiler.
  16 #     If the files differ, DiffOutput.sh prints a portion of the
  17 #     differences.
  18 #
  19 # EXIT STATUS
  20 #     DiffOutput.sh always exits with a zero (successful) exit code.
  21 #
  22
  23 # Command line parameters:
  24 DIFF=$1
  25 WHICHOUTPUT=$2
  26 PROG=$3
  27 GOODOUTPUT=${4-nat}
  28 # Output filename:
  29 DIFFOUTPUT=Output/${PROG}.diff-${WHICHOUTPUT}
  30 # Input filenames:
  31 TESTOUTPUT=Output/${PROG}.out-${WHICHOUTPUT}
  32 GOODOUTPUT=Output/${PROG}.out-${GOODOUTPUT}
  33
  34 # Diff the two files.
  35 $DIFF $GOODOUTPUT $TESTOUTPUT > $DIFFOUTPUT 2>&1 || (
  36   # They are different!
  37   echo "******************** TEST ($WHICHOUTPUT) '$PROG' FAILED! ********************"
  38   echo "Execution Context Diff:"
  39   head -n 200 $DIFFOUTPUT | cat -v
  40   rm $DIFFOUTPUT
  41   echo "******************** TEST ($WHICHOUTPUT) '$PROG' ****************************"
  42 )