From 421110b53cde0f0bd6372ea72d1472e1179bd882 Mon Sep 17 00:00:00 2001
From: Alina Banerjee <alina@glitchgirl.us>
Date: Wed, 2 Jun 2021 22:47:47 -0500
Subject: validate: add a debug flag (in both Hadrian and legacy Make) for
 running tests

---
 validate | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/validate b/validate
index 58f52438cf..1ac68fb0f8 100755
--- a/validate
+++ b/validate
@@ -35,6 +35,7 @@ Flags:
                        to ignore increases in performance tests
   --ignore-perf-decrs  Use Hadrian's user settings to ask the "runtests" driver
                        to ignore decreases in performance tests
+  --debug              Use inbuilt Hadrian flag to generate information for debugging
   --help               shows this usage help.
 
   validate runs 'make -j\$THREADS', where by default THREADS is the number of
@@ -71,6 +72,7 @@ ignore_perf_increases=NO
 ignore_perf_decreases=NO
 hadrian_build_root=_validatebuild
 basedir="$($(dirname $hadrian_build_root) 2>&1 /dev/null && pwd)"
+debugging=0
 
 # Set config_args to empty string if not already set
 if [ "${config_args:-""}" ]; then
@@ -119,6 +121,9 @@ do
     --ignore-perf-decrs)
         ignore_perf_decreases=YES
         ;;
+    --debug)
+        debugging=1
+        ;;
     --help)
         show_help
         exit 0;;
@@ -238,8 +243,11 @@ if [ $build_only -eq 1 ] ||
             echo "V=0"                  >> mk/are-validating.mk # Less gunk
         fi
 
+        if [ $debugging -eq 1 ]; then
+            make="$make --debug=b --debug=m"
+        fi
+
         $make -j"$threads"
-        # For a "debug make", add "--debug=b --debug=m"
     else
         case $speed in
         SLOW)
@@ -249,6 +257,9 @@ if [ $build_only -eq 1 ] ||
         FAST)
             flavour=validate ;;
         esac
+        if [ $debugging -eq 1 ]; then
+        hadrian="$hadrian --debug"
+        fi
 
         $hadrian --flavour=$flavour
     fi
-- 
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