[m-rev.] diff: delete workarounds for bugs in ancient GCCs

[Julien Fischer]

Delete workarounds for bugs in ancient GCCs.

configure.ac:
scripts/mgnuc.in:
 	Delete workarounds for bugs in egcs and GCCs before 2.95.

Julien.

diff --git a/configure.ac b/configure.ac
index 6da3cc2..a12d7ac 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2607,15 +2607,6 @@ case "$ac_cv_prog_gcc" in yes)
              mercury_cv_asm_labels=no
              mercury_cv_gcc_labels=no
              ;;
-        sparc*)
-            case "`$CC --version < /dev/null`" in
-                2.8*)
-                    AC_MSG_WARN(
-[Mercury might not work with gcc 2.8 on sparc!
-****    We advise using gcc 2.95.x.])
-                    ;;
-            esac
-            ;;
      esac
      ;;
  esac
@@ -2908,19 +2899,6 @@ AC_TRY_CPP([
  AC_MSG_RESULT($mercury_cv_profiling)

  #-----------------------------------------------------------------------------#
-
-AC_MSG_CHECKING(if C compiler is egcs)
-case "`$CC --version < /dev/null 2>&1`" in
-    egcs-*)
-        mercury_cv_egcs=yes
-        ;;
-    *)
-        mercury_cv_egcs=no
-        ;;
-esac
-AC_MSG_RESULT($mercury_cv_egcs)
-
-#-----------------------------------------------------------------------------#
  #
  # Add an option that disables the deep profiler
  #
@@ -2951,20 +2929,6 @@ else
      mercury_cv_can_enable_deep_profiler=no
  fi

-# On x86, gcc version egcs-1.1.2 has a bug which causes it to get
-# an internal compiler error when compiling library/random.c
-# (when that file was build with mmc --intermodule-optimization -O4)
-# So if we're using an egcs version of gcc, disable deep profiling.
-case "$host" in
-    i*86-*-*)
-        case "$mercury_cv_egcs" in
-            yes)
-            mercury_cv_can_enable_deep_profiler=no
-            ;;
-        esac
-        ;;
-esac
-
  case "$host" in
      *apple*darwin*)
          mercury_cv_default_cgi_dir=/Library/WebServer/CGI-Executables
diff --git a/scripts/mgnuc.in b/scripts/mgnuc.in
index aafebcf..ed4e5bf 100644
--- a/scripts/mgnuc.in
+++ b/scripts/mgnuc.in
@@ -533,48 +533,10 @@ case "$FULLARCH" in
          ;;
  esac

-# Kludge for gcc-2.6.3 bug on mips: if you use gcc global registers and -O2,
-# gcc 2.6.3 gets an internal error compiling library/int.c and
-# compiler/bytecode.c.  As a work-around, we compile those file with -O1.
-# Similarly library/bag.c needs to be compiled with -O0.
-# Similarly for gcc-2.6.3 on alpha with compiler/modules.c.
-# Similarly for gcc-2.7.0 on i386 with compiler/call_gen.c.
-# Similarly for egcs-1.1 on sparc with library/lexer.c, library/string.c,
-# and compiler/{deforest,dupelim,mercury_to_mercury,modules}.c.
-# Similarly for egcs-1.1.2 on i386 with library/table_builtin.c.
-
  case $COMPILER in gcc)
      case "$FULLARCH" in
-        mips*)
-            case "$*" in
-            *" int.c "*|*" int.dir/int_"*".c "*)
-                case "`$CC --version 2>/dev/null`" in 2.6.*)
-                    ARCH_OPTS="$ARCH_OPTS -O1" ;;
-                esac;;
-            *" bytecode.c "*|*" bytecode.dir/bytecode_"*".c "*)
-                case "`$CC --version 2>/dev/null`" in 2.6.*)
-                    ARCH_OPTS="$ARCH_OPTS -O1" ;;
-                esac;;
-            *" bag.c "*)
-                case "`$CC --version 2>/dev/null`" in 2.6.*)
-                    ARCH_OPTS="$ARCH_OPTS -O0" ;;
-                esac;;
-            esac ;;
-        alpha*)
-            case "$*" in
-            *" modules.c "*|*" modules.dir/modules_"*".c "*)
-                case "`$CC --version 2>/dev/null`" in 2.6.*)
-                    ARCH_OPTS="$ARCH_OPTS -O1" ;;
-                esac
-            esac ;;
          i*86*)
              case "$*" in
-            *" call_gen.c "*|*" modules.dir/call_gen"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O0" ;;
-            *" table_builtin.c "*|*" modules.dir/table_builtin"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O0" ;;
-            *" random.c "*|*" random.dir/random"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O0" ;;
              # Workarounds for internal problems with GCC in asm_fast.gc
              # on i*86.  Reported against gcc 4.4.5 and 4.6.0.
              *" ml_backend.ml_closure_gen.c "*)
@@ -593,23 +555,6 @@ case $COMPILER in gcc)
                  esac
                  ;;
              esac ;;
-        sparc*)
-            case "$*" in
-            *" lexer.c "*|*" modules.dir/lexer"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" string.c "*|*" modules.dir/string"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" deforest.c "*|*" modules.dir/deforest"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" dupelim.c "*|*" modules.dir/dupelim"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" dl.c "*|*" modules.dir/dl"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" mercury_to_mercury.c "*|*" modules.dir/mercury_to_mercury"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            *" modules.c "*|*" modules.dir/modules"*".c "*)
-                ARCH_OPTS="$ARCH_OPTS -O1" ;;
-            esac
      esac ;;
  esac