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| author | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-11-10 16:31:34 +0000 |
|---|---|---|
| committer | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-11-10 16:31:34 +0000 |
| commit | a84b56771371cf1cd03812baff69164e7192115a (patch) | |
| tree | cfdf1d2de2c070bf1d65c39507aff12c418261da /autoconf | |
| parent | 6c43de46ffc6d699f2421706e2d4d8d793d596fa (diff) | |
| download | llvm-a84b56771371cf1cd03812baff69164e7192115a.tar.gz llvm-a84b56771371cf1cd03812baff69164e7192115a.tar.bz2 llvm-a84b56771371cf1cd03812baff69164e7192115a.tar.xz | |
Detect if llvm-gcc is built on dragonegg.
Store the flags needed to disable optimizations and to emit LLVM-IR depending on
the version of llvm-gcc used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118684 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 5fa85d0ab5..1d5fa154fc 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -1414,12 +1414,37 @@ fi dnl Check, whether __dso_handle is present AC_CHECK_FUNCS([__dso_handle]) +dnl Check wether llvm-gcc is based on dragonegg +AC_CACHE_CHECK([whether llvm-gcc is dragonegg],[llvm_cv_llvmgcc_dragonegg], +[llvm_cv_llvmgcc_dragonegg="no" +if test -x "$LLVMGCC" ; then + cp /dev/null conftest.c + "$LLVMGCC" -fplugin-arg-dragonegg-emit-ir -S -o - conftest.c | \ + grep 'target datalayout =' > /dev/null 2>&1 + if test $? -eq 0 ; then + llvm_cv_llvmgcc_dragonegg="yes" + fi + rm conftest.c +fi]) + +dnl Set the flags needed to emit LLVM IR and to disable optimizations +dnl in llvmgcc +if test "$llvm_cv_llvmgcc_dragonegg" = "yes" ; then + LLVMCC_EMITIR_FLAG="-fplugin-arg-dragonegg-emit-ir" + LLVMGCC_DISABLEOPT_FLAGS="-fplugin-arg-dragonegg-disable-llvm-optzns" +else + LLVMCC_EMITIR_FLAG="-emit-llvm" + LLVMGCC_DISABLEOPT_FLAGS="-mllvm -disable-llvm-optzns" +fi + +AC_SUBST(LLVMCC_EMITIR_FLAG) + dnl See if the llvm-gcc executable can compile to LLVM assembly AC_CACHE_CHECK([whether llvm-gcc is sane],[llvm_cv_llvmgcc_sanity], [llvm_cv_llvmgcc_sanity="no" if test -x "$LLVMGCC" ; then cp /dev/null conftest.c - "$LLVMGCC" -emit-llvm -S -o - conftest.c | \ + "$LLVMGCC" "$LLVMCC_EMITIR_FLAG" -S -o - conftest.c | \ grep 'target datalayout =' > /dev/null 2>&1 if test $? -eq 0 ; then llvm_cv_llvmgcc_sanity="yes" @@ -1428,6 +1453,7 @@ if test -x "$LLVMGCC" ; then fi]) dnl Since we have a sane llvm-gcc, identify it and its sub-tools +dnl Furthermore, add some information about the tools if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then AC_MSG_CHECKING([llvm-gcc component support]) llvmcc1path=`"$LLVMGCC" --print-prog-name=cc1` @@ -1438,6 +1464,8 @@ if test "$llvm_cv_llvmgcc_sanity" = "yes" ; then AC_SUBST(LLVMGCCDIR,$llvmgccdir) llvmgcclangs=[`"$LLVMGCC" -v --help 2>&1 | grep '^Configured with:' | sed 's/^.*--enable-languages=\([^ ]*\).*/\1/'`] AC_SUBST(LLVMGCC_LANGS,$llvmgcclangs) + AC_SUBST(LLVMGCC_DRAGONEGG,$llvm_cv_llvmgcc_dragonegg) + AC_SUBST(LLVMGCC_DISABLEOPT_FLAGS) AC_MSG_RESULT([ok]) fi |