[gcc r11-7079] libstdc++: Support timeout and timeout-factor options

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:8f7ad986515580265f4315a6036ef3b49eb6be47

commit r11-7079-g8f7ad986515580265f4315a6036ef3b49eb6be47
Author: Matthias Kretz <kretz@kde.org>
Date:   Wed Feb 3 15:49:30 2021 +0000

    libstdc++: Support timeout and timeout-factor options
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/experimental/simd/driver.sh: Abstract reading test
            options into read_src_option function. Read skip, only,
            expensive, and xfail via read_src_option. Add timeout and
            timeout-factor options and adjust timeout variable accordingly.
            * testsuite/experimental/simd/tests/loadstore.cc: Set
            timeout-factor 2.

Diff:
---
 libstdc++-v3/testsuite/experimental/simd/driver.sh | 38 +++++++++++++++-------
 .../testsuite/experimental/simd/tests/loadstore.cc |  1 +
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/libstdc++-v3/testsuite/experimental/simd/driver.sh b/libstdc++-v3/testsuite/experimental/simd/driver.sh
index 719e4db8e68..f2d31c70bd0 100755
--- a/libstdc++-v3/testsuite/experimental/simd/driver.sh
+++ b/libstdc++-v3/testsuite/experimental/simd/driver.sh
@@ -214,35 +214,43 @@ trap "rm -f '$log' '$sum' $exe; exit" INT
 rm -f "$log" "$sum"
 touch "$log" "$sum"
 
-skip="$(head -n25 "$src" | grep '^//\s*skip: ')"
-if [ -n "$skip" ]; then
-  skip="$(echo "$skip" | sed -e 's/^.*:\s*//' -e 's/ \+/ /g')"
+read_src_option() {
+  local key tmp var
+  key="$1"
+  var="$2"
+  [ -z "$var" ] && var="$1"
+  local tmp="$(head -n25 "$src" | grep "^//\\s*${key}: ")"
+  if [ -n "$tmp" ]; then
+    tmp="$(echo "${tmp#//*${key}: }" | sed -e 's/ \+/ /g' -e 's/^ //' -e 's/$//')"
+    eval "$var=\"$tmp\""
+  else
+    return 1
+  fi
+}
+
+if read_src_option skip; then
   if test_selector "$skip"; then
     # silently skip this test
     exit 0
   fi
 fi
-only="$(head -n25 "$src" | grep '^//\s*only: ')"
-if [ -n "$only" ]; then
-  only="$(echo "$only" | sed -e 's/^.*:\s*//' -e 's/ \+/ /g')"
+if read_src_option only; then
   if ! test_selector "$only"; then
     # silently skip this test
     exit 0
   fi
 fi
+
 if ! $run_expensive; then
-  expensive="$(head -n25 "$src" | grep '^//\s*expensive: ')"
-  if [ -n "$expensive" ]; then
-    expensive="$(echo "$expensive" | sed -e 's/^.*:\s*//' -e 's/ \+/ /g')"
+  if read_src_option expensive; then
     if test_selector "$expensive"; then
       unsupported "skip expensive tests"
       exit 0
     fi
   fi
 fi
-xfail="$(head -n25 "$src" | grep '^//\s*xfail: ')"
-if [ -n "$xfail" ]; then
-  xfail="$(echo "$xfail" | sed -e 's/^.*:\s*//' -e 's/ \+/ /g')"
+
+if read_src_option xfail; then
   if test_selector "${xfail#* }"; then
     xfail="${xfail%% *}"
   else
@@ -250,6 +258,12 @@ if [ -n "$xfail" ]; then
   fi
 fi
 
+read_src_option timeout
+
+if read_src_option timeout-factor factor; then
+  timeout=$(awk "BEGIN { print int($timeout * $factor) }")
+fi
+
 log_output() {
   if $verbose; then
     maxcol=${1:-1024}
diff --git a/libstdc++-v3/testsuite/experimental/simd/tests/loadstore.cc b/libstdc++-v3/testsuite/experimental/simd/tests/loadstore.cc
index 2c328368e44..451d3b8c2a5 100644
--- a/libstdc++-v3/testsuite/experimental/simd/tests/loadstore.cc
+++ b/libstdc++-v3/testsuite/experimental/simd/tests/loadstore.cc
@@ -16,6 +16,7 @@
 // <http://www.gnu.org/licenses/>.
 
 // expensive: * [1-9] * *
+// timeout-factor: 2
 #include "bits/verify.h"
 #include "bits/make_vec.h"
 #include "bits/conversions.h"