From: Matthias Kretz <kr...@kde.org>

libstdc++-v3/ChangeLog:
        * testsuite/experimental/simd/driver.sh (verify_test): Print
        test output on run xfail. Do not repeat lines from the log that
        were already printed on stdout.
        (test_selector): Make the compiler flags pattern usable as a
        substring selector.
        (toplevel): Trap on SIGINT and remove the log and sum files.
        Call timout with --foreground to quickly terminate on SIGINT.
        * testsuite/experimental/simd/generate_makefile.sh: Simplify run
        targets via target patterns. Default DRIVEROPTS to -v for run
        targets. Remove log and sum files after completion of the run
        target (so that it's always recompiled).
        Place help text into text file for reasonable 'make help'
        performance.
---
 .../testsuite/experimental/simd/driver.sh     | 16 +++--
 .../experimental/simd/generate_makefile.sh    | 70 +++++++++----------
 2 files changed, 44 insertions(+), 42 deletions(-)


--
──────────────────────────────────────────────────────────────────────────
 Dr. Matthias Kretz                           https://mattkretz.github.io
 GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
 std::experimental::simd              https://github.com/VcDevel/std-simd
──────────────────────────────────────────────────────────────────────────
diff --git a/libstdc++-v3/testsuite/experimental/simd/driver.sh b/libstdc++-v3/testsuite/experimental/simd/driver.sh
index 84f3829c2d4..cf07ff9ad85 100755
--- a/libstdc++-v3/testsuite/experimental/simd/driver.sh
+++ b/libstdc++-v3/testsuite/experimental/simd/driver.sh
@@ -224,16 +224,17 @@ verify_test() {
       fail "timeout: execution test"
     elif [ "$xfail" = "run" ]; then
       xfail "execution test"
-      exit 0
     else
       fail "execution test"
     fi
     if $verbose; then
-      if [ $(cat "$log"|wc -l) -gt 1000 ]; then
+      lines=$(wc -l < "$log")
+      lines=$((lines-3))
+      if [ $lines -gt 1000 ]; then
         echo "[...]"
         tail -n1000 "$log"
       else
-        cat "$log"
+        tail -n$lines "$log"
       fi
     elif ! $quiet; then
       grep -i fail "$log" | head -n5
@@ -267,7 +268,7 @@ test_selector() {
       [ -z "$target_triplet" ] && target_triplet=$($CXX -dumpmachine)
       if matches "$target_triplet" "$pat_triplet"; then
         pat_flags="${string#* }"
-        if matches "$CXXFLAGS" "$pat_flags"; then
+        if matches "$CXXFLAGS" "*$pat_flags*"; then
           return 0
         fi
       fi
@@ -276,6 +277,7 @@ test_selector() {
   return 1
 }
 
+trap "rm -f '$log' '$sum'; exit" INT
 rm -f "$log" "$sum"
 touch "$log" "$sum"
 
@@ -316,15 +318,15 @@ if [ -n "$xfail" ]; then
 fi
 
 write_log_and_verbose "$CXX $src $@ -D_GLIBCXX_SIMD_TESTTYPE=$type $abiflag -o $exe"
-timeout $timeout "$CXX" "$src" "$@" "-D_GLIBCXX_SIMD_TESTTYPE=$type" $abiflag -o "$exe" >> "$log" 2>&1
+timeout --foreground $timeout "$CXX" "$src" "$@" "-D_GLIBCXX_SIMD_TESTTYPE=$type" $abiflag -o "$exe" >> "$log" 2>&1
 verify_compilation $?
 if [ -n "$sim" ]; then
   write_log_and_verbose "$sim ./$exe"
-  timeout $timeout $sim "./$exe" >> "$log" 2>&1 <&-
+  timeout --foreground $timeout $sim "./$exe" >> "$log" 2>&1 <&-
 else
   write_log_and_verbose "./$exe"
   timeout=$(awk "BEGIN { print int($timeout / 2) }")
-  timeout $timeout "./$exe" >> "$log" 2>&1 <&-
+  timeout --foreground $timeout "./$exe" >> "$log" 2>&1 <&-
 fi
 verify_test $?
 
diff --git a/libstdc++-v3/testsuite/experimental/simd/generate_makefile.sh b/libstdc++-v3/testsuite/experimental/simd/generate_makefile.sh
index 553bc98f60b..8d642a2941a 100755
--- a/libstdc++-v3/testsuite/experimental/simd/generate_makefile.sh
+++ b/libstdc++-v3/testsuite/experimental/simd/generate_makefile.sh
@@ -240,7 +240,7 @@ EOF
 %-$type.log: %-$type-0.log %-$type-1.log %-$type-2.log %-$type-3.log \
 %-$type-4.log %-$type-5.log %-$type-6.log %-$type-7.log \
 %-$type-8.log %-$type-9.log
-	@cat $^ > \$@
+	@cat \$^ > \$@
 	@cat \$(^:log=sum) > \$(@:log=sum)${rmline}
 
 EOF
@@ -252,47 +252,47 @@ EOF
 EOF
     done
   done
-  echo 'run-%: export GCC_TEST_RUN_EXPENSIVE=yes'
-  all_tests | while read file && read name; do
-    echo "run-$name: $name.log"
-    all_types "$file" | while read t && read type; do
-      echo "run-$name-$type: $name-$type.log"
-      for i in $(seq 0 9); do
-        echo "run-$name-$type-$i: $name-$type-$i.log"
-      done
-    done
-    echo
-  done
   cat <<EOF
-help:
-	@printf "use DRIVEROPTS=<options> to pass the following options:\n"\\
-	"-q, --quiet         Only print failures.\n"\\
-	"-v, --verbose       Print compiler and test output on failure.\n"\\
-	"-k, --keep-failed   Keep executables of failed tests.\n"\\
-	"--sim <executable>  Path to an executable that is prepended to the test\n"\\
-	"                    execution binary (default: the value of\n"\\
-	"                    GCC_TEST_SIMULATOR).\n"\\
-	"--timeout-factor <x>\n"\\
-	"                    Multiply the default timeout with x.\n"\\
-	"--run-expensive     Compile and run tests marked as expensive (default:\n"\\
-	"                    true if GCC_TEST_RUN_EXPENSIVE is set, false otherwise).\n"\\
-	"--only <pattern>    Compile and run only tests matching the given pattern.\n\n"
-	@echo "use TESTFLAGS=<flags> to pass additional compiler flags"
-	@echo
-	@echo "The following are some of the valid targets for this Makefile:"
-	@echo "... all"
-	@echo "... clean"
-	@echo "... help"
+run-%: export GCC_TEST_RUN_EXPENSIVE=yes
+run-%: DRIVEROPTS=-v
+run-%: %.log
+	@rm \$^ \$(^:log=sum)
+
+help: .make_help.txt
+	@cat \$<
+
+EOF
+  dsthelp="${dst%Makefile}.make_help.txt"
+  cat <<EOF > "$dsthelp"
+use DRIVEROPTS=<options> to pass the following options:
+-q, --quiet         Only print failures.
+-v, --verbose       Print compiler and test output on failure.
+-k, --keep-failed   Keep executables of failed tests.
+--sim <executable>  Path to an executable that is prepended to the test
+                    execution binary (default: the value of
+                    GCC_TEST_SIMULATOR).
+--timeout-factor <x>
+                    Multiply the default timeout with x.
+--run-expensive     Compile and run tests marked as expensive (default:
+                    true if GCC_TEST_RUN_EXPENSIVE is set, false otherwise).
+--only <pattern>    Compile and run only tests matching the given pattern.
+
+use TESTFLAGS=<flags> to pass additional compiler flags
+
+The following are some of the valid targets for this Makefile:
+... all
+... clean
+... help"
 EOF
   all_tests | while read file && read name; do
-    printf "\t@echo '... run-${name}'\n"
+    echo "... run-${name}"
     all_types | while read t && read type; do
-      printf "\t@echo '... run-${name}-${type}'\n"
+      echo "... run-${name}-${type}"
       for i in $(seq 0 9); do
-        printf "\t@echo '... run-${name}-${type}-$i'\n"
+        echo "... run-${name}-${type}-$i"
       done
     done
-  done
+  done >> "$dsthelp"
   cat <<EOF
 
 clean:

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