ci: Make test iterations configurable and tweak for sanitizer builds

.cirrus.yml

@@ -13,7 +13,8 @@ env:
   EXPERIMENTAL: no
   CTIMETEST: yes
   BENCH: yes
-  ITERS: 2
+  TEST_ITERS: 16
+  BENCH_ITERS: 2
   MAKEFLAGS: -j2
 
 cat_logs_snippet: &CAT_LOGS
@@ -271,6 +272,7 @@ task:
         UBSAN_OPTIONS: "print_stacktrace=1:halt_on_error=1"
         ASAN_OPTIONS: "strict_string_checks=1:detect_stack_use_after_return=1:detect_leaks=1"
         LSAN_OPTIONS: "use_unaligned=0"
+        TEST_ITERS: 32
   # Try to cover many configurations with just a tiny matrix.
   matrix:
     - env:

ci/cirrus.sh

@@ -36,7 +36,7 @@ fi
 
 if [ -n "$WRAPPER_CMD" ]
 then
-    $WRAPPER_CMD ./tests 16
+    $WRAPPER_CMD ./tests $TEST_ITERS
     $WRAPPER_CMD ./exhaustive_tests
 fi
 
@@ -48,8 +48,8 @@ then
     then
         EXEC="$EXEC $WRAPPER_CMD"
     fi
-    # This limits the iterations in the benchmarks below to ITER iterations.
-    export SECP256K1_BENCH_ITERS="$ITERS"
+    # This limits the iterations in the benchmarks below to BENCH_ITERS iterations.
+    export SECP256K1_BENCH_ITERS="$BENCH_ITERS"
     {
         $EXEC ./bench_ecmult
         $EXEC ./bench_internal