v3d: add debug assert

While lowering vpm outputs we look for the NIR variables matching
particular store output instructions and we expect to find a match,
so assert on that.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>

diff --git a/src/broadcom/compiler/v3d_nir_lower_io.c b/src/broadcom/compiler/v3d_nir_lower_io.c
index ee9b29d0f2d4e5249d24e473dfc9b74150bdfd09..3145c560a140ebe75787664876953d95f4fca9bd 100644 (file)
--- a/src/broadcom/compiler/v3d_nir_lower_io.c
+++ b/src/broadcom/compiler/v3d_nir_lower_io.c
@@ -127,6 +127,7 @@ v3d_nir_lower_vpm_output(struct v3d_compile *c, nir_builder *b,
                 }
                 var = scan_var;
         }
+        assert(var);
 
         /* Save off the components of the position for the setup of VPM inputs
          * read by fixed function HW.