From a871415abf3b6000c6302b35ef7781f9a58c8d87 Mon Sep 17 00:00:00 2001
From: Robert O'Callahan <rocallahan@google.com>
Date: Thu, 27 Nov 2025 21:57:35 +0000
Subject: [PATCH] Limit YOSYS_MAX_THREADS to 4 when running seed-tests

---
 tests/arch/run-test.sh         | 1 +
 tests/asicworld/run-test.sh    | 1 +
 tests/blif/run-test.sh         | 1 +
 tests/bram/run-test.sh         | 1 +
 tests/common-env.sh            | 1 +
 tests/cxxrtl/run-test.sh       | 1 +
 tests/fmt/run-test.sh          | 1 +
 tests/fsm/run-test.sh          | 1 +
 tests/functional/run-test.sh   | 1 +
 tests/hana/run-test.sh         | 1 +
 tests/liberty/run-test.sh      | 1 +
 tests/memfile/run-test.sh      | 1 +
 tests/memlib/run-test.sh       | 1 +
 tests/opt_share/run-test.sh    | 1 +
 tests/peepopt/run-test.sh      | 1 +
 tests/proc/run-test.sh         | 1 +
 tests/rpc/run-test.sh          | 1 +
 tests/select/run-test.sh       | 1 +
 tests/share/run-test.sh        | 1 +
 tests/simple/run-test.sh       | 1 +
 tests/simple_abc9/run-test.sh  | 1 +
 tests/svinterfaces/run-test.sh | 1 +
 tests/xprop/run-test.sh        | 1 +
 23 files changed, 23 insertions(+)
 create mode 100644 tests/common-env.sh

diff --git a/tests/arch/run-test.sh b/tests/arch/run-test.sh
index 68f925b34..7602717d2 100755
--- a/tests/arch/run-test.sh
+++ b/tests/arch/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 set -e
 
diff --git a/tests/asicworld/run-test.sh b/tests/asicworld/run-test.sh
index 5131ed646..c9b4118a7 100755
--- a/tests/asicworld/run-test.sh
+++ b/tests/asicworld/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 OPTIND=1
 seed=""    # default to no seed specified
diff --git a/tests/blif/run-test.sh b/tests/blif/run-test.sh
index e9698386e..2e3f5235c 100755
--- a/tests/blif/run-test.sh
+++ b/tests/blif/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 for x in *.ys; do
   echo "Running $x.."
diff --git a/tests/bram/run-test.sh b/tests/bram/run-test.sh
index 37fc91d0e..47f24f5dd 100755
--- a/tests/bram/run-test.sh
+++ b/tests/bram/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 # run this test many times:
 # MAKE="make -j8" time bash -c 'for ((i=0; i<100; i++)); do echo "-- $i --"; bash run-test.sh || exit 1; done'
diff --git a/tests/common-env.sh b/tests/common-env.sh
new file mode 100644
index 000000000..f3a411280
--- /dev/null
+++ b/tests/common-env.sh
@@ -0,0 +1 @@
+export YOSYS_MAX_THREADS=4
diff --git a/tests/cxxrtl/run-test.sh b/tests/cxxrtl/run-test.sh
index 4b542e180..aa7a0c26c 100755
--- a/tests/cxxrtl/run-test.sh
+++ b/tests/cxxrtl/run-test.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+source ../common-env.sh
 
 set -ex
 
diff --git a/tests/fmt/run-test.sh b/tests/fmt/run-test.sh
index 88ee6e238..a3402f953 100644
--- a/tests/fmt/run-test.sh
+++ b/tests/fmt/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 set -ex
 
diff --git a/tests/fsm/run-test.sh b/tests/fsm/run-test.sh
index dc60c69c4..139ea8261 100755
--- a/tests/fsm/run-test.sh
+++ b/tests/fsm/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 # run this test many times:
 # time bash -c 'for ((i=0; i<100; i++)); do echo "-- $i --"; bash run-test.sh || exit 1; done'
diff --git a/tests/functional/run-test.sh b/tests/functional/run-test.sh
index e0bedf8d4..7c38f3190 100755
--- a/tests/functional/run-test.sh
+++ b/tests/functional/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 
diff --git a/tests/hana/run-test.sh b/tests/hana/run-test.sh
index 99be37f5e..8533e5544 100755
--- a/tests/hana/run-test.sh
+++ b/tests/hana/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 OPTIND=1
 seed=""    # default to no seed specified
diff --git a/tests/liberty/run-test.sh b/tests/liberty/run-test.sh
index 5afdb727e..d5fb65e16 100755
--- a/tests/liberty/run-test.sh
+++ b/tests/liberty/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -eo pipefail
 
 for x in *.lib; do
diff --git a/tests/memfile/run-test.sh b/tests/memfile/run-test.sh
index db0ec54ee..44c1e4821 100755
--- a/tests/memfile/run-test.sh
+++ b/tests/memfile/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 set -e
 
diff --git a/tests/memlib/run-test.sh b/tests/memlib/run-test.sh
index 5f230a03e..9e95fb255 100755
--- a/tests/memlib/run-test.sh
+++ b/tests/memlib/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -eu
 
 OPTIND=1
diff --git a/tests/opt_share/run-test.sh b/tests/opt_share/run-test.sh
index e80cd4214..e3a6e8b7b 100755
--- a/tests/opt_share/run-test.sh
+++ b/tests/opt_share/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 # run this test many times:
 # time bash -c 'for ((i=0; i<100; i++)); do echo "-- $i --"; bash run-test.sh || exit 1; done'
diff --git a/tests/peepopt/run-test.sh b/tests/peepopt/run-test.sh
index e9698386e..2e3f5235c 100644
--- a/tests/peepopt/run-test.sh
+++ b/tests/peepopt/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 for x in *.ys; do
   echo "Running $x.."
diff --git a/tests/proc/run-test.sh b/tests/proc/run-test.sh
index e9698386e..2e3f5235c 100755
--- a/tests/proc/run-test.sh
+++ b/tests/proc/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 for x in *.ys; do
   echo "Running $x.."
diff --git a/tests/rpc/run-test.sh b/tests/rpc/run-test.sh
index 624043750..0d58b0de2 100755
--- a/tests/rpc/run-test.sh
+++ b/tests/rpc/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 for x in *.ys; do
   echo "Running $x.."
diff --git a/tests/select/run-test.sh b/tests/select/run-test.sh
index e9698386e..2e3f5235c 100755
--- a/tests/select/run-test.sh
+++ b/tests/select/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 for x in *.ys; do
   echo "Running $x.."
diff --git a/tests/share/run-test.sh b/tests/share/run-test.sh
index a7b5fc4a0..0cef580a7 100755
--- a/tests/share/run-test.sh
+++ b/tests/share/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 # run this test many times:
 # time bash -c 'for ((i=0; i<100; i++)); do echo "-- $i --"; bash run-test.sh || exit 1; done'
diff --git a/tests/simple/run-test.sh b/tests/simple/run-test.sh
index b9e79f34a..c3711fe3e 100755
--- a/tests/simple/run-test.sh
+++ b/tests/simple/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 OPTIND=1
 seed=""    # default to no seed specified
diff --git a/tests/simple_abc9/run-test.sh b/tests/simple_abc9/run-test.sh
index 5669321ac..0b3e5061f 100755
--- a/tests/simple_abc9/run-test.sh
+++ b/tests/simple_abc9/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 
 OPTIND=1
 seed=""    # default to no seed specified
diff --git a/tests/svinterfaces/run-test.sh b/tests/svinterfaces/run-test.sh
index 71bdcd67a..28ce627d9 100755
--- a/tests/svinterfaces/run-test.sh
+++ b/tests/svinterfaces/run-test.sh
@@ -1,4 +1,5 @@
 #/bin/bash -e
+source ../common-env.sh
 
 ./runone.sh  svinterface1
 ./runone.sh  svinterface_at_top
diff --git a/tests/xprop/run-test.sh b/tests/xprop/run-test.sh
index 84b7c4ac4..303c0bb3b 100755
--- a/tests/xprop/run-test.sh
+++ b/tests/xprop/run-test.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+source ../common-env.sh
 set -e
 
 python3 generate.py $@