Mesa (master): freedreno/ir3: Use get_once() for one-time init

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Module: Mesa
Branch: master
Commit: b4ad27a986e1c6899cbf23355c3e9c6de345a323
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b4ad27a986e1c6899cbf23355c3e9c6de345a323

Author: Rob Clark <robdclark at chromium.org>
Date:   Mon Nov 23 14:28:52 2020 -0800

freedreno/ir3: Use get_once() for one-time init

Signed-off-by: Rob Clark <robdclark at chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg at google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7644>

---

 src/freedreno/ir3/ir3_nir.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/freedreno/ir3/ir3_nir.c b/src/freedreno/ir3/ir3_nir.c
index 8a3f768d995..cf2603af963 100644
--- a/src/freedreno/ir3/ir3_nir.c
+++ b/src/freedreno/ir3/ir3_nir.c
@@ -204,9 +204,8 @@ ir3_optimize_loop(nir_shader *s)
 		progress |= OPT(s, nir_copy_prop);
 		progress |= OPT(s, nir_opt_dce);
 		progress |= OPT(s, nir_opt_cse);
-		static int gcm = -1;
-		if (gcm == -1)
-			gcm = env_var_as_unsigned("GCM", 0);
+
+		int gcm = get_once(env_var_as_unsigned("GCM", 0));
 		if (gcm == 1)
 			progress |= OPT(s, nir_opt_gcm, true);
 		else if (gcm == 2)