llvm-test-suite: Move script to this repository

Move a script from https://src.fedoraproject.org/rpms/llvm-test-suite to
here. With this change, network access and git are not required.
Adds cmake to the list of required package as this was missing before.

tests/llvm-test-suite/main.fmf

@@ -13,8 +13,8 @@ adjust+:
     when: compat is defined
 
 require+:
-  - git
   - clang
+  - cmake
   - ninja-build
   - llvm-test-suite
 duration: 1h

tests/llvm-test-suite/test.sh

@@ -1,7 +1,118 @@
-#!/bin/sh -eux
+#!/bin/bash
 
-# TODO: tmt does not support a remote git repo as a requirement, one has to clone it "manually".
+usage() {
+    echo "usage `basename $0` [OPTIONS]"
+    echo "  --threads NUM       The number of threads to use for running tests."
+    echo "  --testsuite-dir DIR Directory containing the test-suite source."
+    echo "  --compiler [gcc|clang] The compiler to test."
+}
 
-git clone --depth 1 https://src.fedoraproject.org/rpms/llvm-test-suite.git llvm-test-suite
-cd llvm-test-suite/tests/test-suite
-./runtest.sh
+cc="clang"
+cxx="clang++"
+testsuite_dir="/usr/share/llvm-test-suite/"
+thread_args=""
+
+while [ $# -gt 0 ]; do
+    case $1 in
+        --threads)
+            shift
+            threads="$1"
+            ;;
+        --testsuite-dir)
+            shift
+            testsuire_dir="$1"
+            ;;
+        --compiler)
+            shift
+            compiler="$1"
+            case $compiler in
+                clang)
+                    cc="clang"
+                    cxx="clang++"
+                    ;;
+                gcc)
+                    cc="gcc"
+                    cxx="g++"
+                    ;;
+                *)
+                    echo "unknown compiler: $1"
+                    exit 1
+                    ;;
+            esac
+            ;;
+        * )
+            echo "unknown option: $1"
+            echo ""
+            usage
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+if [ -n "$threads" ]; then
+  thread_args_ninja="-j$threads"
+  thread_args_lit="j$threads"
+fi
+
+set -xe
+
+# This test consumes almost 2GiB. This space may not be available on /tmp on
+# all servers. We need to guarantee that physical disk is used in order to
+# avoid spurious failures.
+tmpdir=$(mktemp -d -p /var/tmp llvm-test-suite.XXXXXXXXXX)
+pushd $tmpdir
+
+cmake -G Ninja $testsuite_dir \
+    -DCMAKE_C_COMPILER=$cc \
+    -DCMAKE_CXX_COMPILER=$cxx \
+    -DTEST_SUITE_LIT_FLAGS="-sv$thread_args_lit"
+
+if ! ninja $thread_args_ninja check ; then
+  # The following code helps with troubleshooting an issue with miniFE.
+  # Collect more information about the OS and server that reproduced the
+  # issue.
+  # https://github.com/fedora-llvm-team/llvm-snapshots/issues/874
+  mdir=$tmpdir/MultiSource/Benchmarks/DOE-ProxyApps-C++/miniFE
+
+  if [[ ! -e $mdir/miniFE ]]; then
+    # If this executable does not exist, assume the test failed due to another
+    # reason.
+    exit 1
+  fi
+
+  uname -a
+  lscpu
+
+  ldd $mdir/miniFE
+  readelf -hSlW $mdir/miniFE
+
+  readelf -Ws --demangle \
+    $mdir/miniFE \
+    | grep -E 'Symbol table|Ndx Name|cg_solve'
+
+  objdump --disassemble=_ZN6miniFE8cg_solveINS_9CSRMatrixIdiiEENS_6VectorIdiiEENS_14matvec_overlapIS2_S4_EEEEvRT_RKT0_RS9_T1_NS7_16LocalOrdinalTypeERNS_10TypeTraitsINS7_10ScalarTypeEE14magnitude_typeERSE_SJ_Pd \
+    $mdir/miniFE
+
+  objdump --disassemble=_ZN6miniFE8cg_solveINS_9CSRMatrixIdiiEENS_6VectorIdiiEENS_10matvec_stdIS2_S4_EEEEvRT_RKT0_RS9_T1_NS7_16LocalOrdinalTypeERNS_10TypeTraitsINS7_10ScalarTypeEE14magnitude_typeERSE_SJ_Pd \
+    $mdir/miniFE
+
+  $tmpdir/tools/timeit-target --timeout 7200 --limit-core 0 --limit-cpu 7200 \
+      --limit-file-size 209715200 --limit-rss-size 838860800 \
+      --append-exitstatus \
+      --redirect-output $mdir/Output/miniFE.test.out \
+      --redirect-input /dev/null \
+      --chdir $mdir \
+      --summary $mdir/Output/miniFE.test.time \
+      $mdir/miniFE \
+      -nx 64 -ny 64 -nz 64
+  $tmpdir/tools/fpcmp-target \
+      $mdir/Output/miniFE.test.out \
+      $mdir/miniFE.reference_output
+
+  exit 1
+fi
+
+popd
+# Remove temporary files in case of success.
+rm -rf $tmpdir