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#! /bin/bash

# Compare the assembly language output for all the gcc tests.
# Copyright (C) 2009 Free Software Foundation, Inc.
# Contributed by Paolo Bonzini.
#
# Invoke it as "bash compare-all-tests target1 target2 ... targetN".
# Assumptions are:
#
# 1) that the base and patched compilers reside respectively in
# base-$target-build and $target-build, where $target is the commandline
# argument to compare-all-tests, and should match the variables in the
# script itself so that the correct set of options is tested.  Both
# compilers should be fully built (including target libraries).
# 
# 2) that the testsuite has been run on the base compiler (since it's
# just compilation testing, using RUNTESTFLAGS=--target_board=basic-sim
# usually suffices).
# 
# Tests that fail to compile on the base compiler are not compared.

alpha_opts='-mlong-double-64/-mieee -mlong-double-64 -mlong-double-128/-mieee -mlong-double-128'
arm_opts='-mthumb/-march=armv5t -mthumb/-march=armv6t2 -march=armv5 -mthumb/-march=armv6t2/-mfpu=vfp/-mfloat-abi=softfp -march=armv5/-mfpu=vfp/-mfloat-abi=softfp'
cris_opts='-march=v32 -march=v1'
h8300_opts='/ -mh -mh/-mn -ms -ms/-mn -msx -msx/-mn -mint32 -mh/-mint32 -mh/-mn/-mint32 -ms/-mint32 -ms/-mn/-mint32 -msx/-mint32 -msx/-mn/-mint32'
i386_opts='-m32 -m64 -m32/-msse/-msse2/-mfpmath=sse'
m32c_opts='-mcpu=r8c -mcpu=m16c -mcpu=m32c'
m68k_opts='-m68000 -m68020 -m68020/-m68881 -m68040/-m68881 -m68060/-m68881 -mcfv4e'
mips_opts='-msoft-float/-mgp32/-mips16 -mabi=32/-mfp32/-mgp32/-mips16 -mabi=o64/-mfp64/-mgp64/-mips16 -msoft-float/-mgp32 -mfp32/-mgp32 -march=mips64r2/-mabi=32/-mfp64/-mgp32 -msoft-float/-mgp64 -msingle-float/-mfp32/-mgp64 -mfp64/-mgp64'
mn10300_opts='-mam33 -mam33-2'
pa_opts='-march=2.0 -march=1.0 -march=1.1'
ppc_opts='-m32 -m64'
s390_opts='-m31 -m31/-mzarch -m64'
score_opts='-mscore3 -mscore7'
sh64_opts='-m5-32media -m5-32media-nofpu -m5-64media -m5-64media-nofpu -m5-compact -m5-compact-nofpu'
sh_opts='-m3 -m3e -m4 -m4a -m4al -m4/-mieee -m1 -m1/-mno-cbranchdi -m2a -m2a/-mieee -m2e -m2e/-mieee'
sparc_opts='-mcpu=v8/-m32 -mcpu=v9/-m32 -m64'

all_targets='alpha arm avr bfin cris crx fr30 frv h8300 ia64 iq2000 m32c m32r m68hc11 m68k mcore mips mmix mn10300 pa pdp11 picochip ppc score sh sh64 sparc spu v850 vax xstormy16 xtensa' # e500 

test_one_file ()
{
  local bdir pdir opts bline pline
  bdir=base-$1-gcc-build
  pdir=$1-gcc-build
  bline=$2
  pline=${2//$bdir/$pdir}
  opts=${3//\// }
  echo "$pline $opts"
  $bline $opts 2>/dev/null >/dev/null || return 0
  diff -L "$bdir/gcc/cc1 $opts" -L "$pdir/gcc/cc1 $opts" -u \
    <( $bline $opts 2>&1 ) <( $pline $opts 2>&1 ) || { echo -n . >&2; return 1; }
}
  
test_all_opts ()
{
  eval opts=\$${1}_opts
  if test -z "$opts"; then
    test_one_file $1 "$2"
  else
    for opt in $opts; do
      test_one_file $1 "$2" $opt
    done
  fi
}

for target in ${*-$all_targets}; do
  mkdir -p $target-gcc-build/gcc/testsuite/gcc
  cp -R base-$target-gcc-build/gcc/testsuite/gcc/gcc.dg-struct-layout-1 \
    $target-gcc-build/gcc/testsuite/gcc/gcc.dg-struct-layout-1 

  # Provide targ-include files for newlib
  # for newlib_path in `echo base-$target-gcc-build/*/newlib`; do
  #   test -d $newlib_path && ln -sf ../../$newlib_path ${newlib_path/base-}
  # done

  echo -n Testing $target >&2
  sed '/^Executing on host: /!d
    /xgcc -B/!d
    / -E /d
    / -g/d
    / -print-prog-name=/d
    s/^Executing on host: //
    s/   *(timeout.*//
    s/ -fverbose-asm / /
    s/ -frtl-abstract-sequences / /
    s/ -fdump[-a-z0-9]* / /g
    s/ -da / /g
    s/ -\{1,2\}save-temps / /
    s/ -c / -S /
    / -S /! s/ -o / -S -o /
    s/ -o [^ ]*/ -frandom-seed=0 -o -/' base-$target-gcc-build/gcc/testsuite/gcc/gcc.log | while read line; do
    case "$line" in
      *" -m"*) test_one_file $target "$line" "" ;;
      *) test_all_opts $target "$line" ;;
    esac
  done > compare-$target.log
  echo >&2
done