diff --git a/src/gallium/drivers/crocus/crocus_context.h b/src/gallium/drivers/crocus/crocus_context.h
index 06a0ff0f2fa..38366896183 100644
--- a/src/gallium/drivers/crocus/crocus_context.h
+++ b/src/gallium/drivers/crocus/crocus_context.h
@@ -318,9 +318,6 @@ struct crocus_uncompiled_shader {
    /** Have any shader variants been compiled yet? */
    bool compiled_once;
 
-   /** Should we use ALT mode for math?  Useful for ARB programs. */
-   bool use_alt_mode;
-
    bool needs_edge_flag;
 
    /** Constant data scraped from the shader by nir_opt_large_constants */
diff --git a/src/gallium/drivers/crocus/crocus_program.c b/src/gallium/drivers/crocus/crocus_program.c
index b4a4ce61ede..14001b10b59 100644
--- a/src/gallium/drivers/crocus/crocus_program.c
+++ b/src/gallium/drivers/crocus/crocus_program.c
@@ -1200,7 +1200,7 @@ crocus_compile_vs(struct crocus_context *ice,
       nir_shader_gather_info(nir, impl);
    }
 
-   prog_data->use_alt_mode = ish->use_alt_mode;
+   prog_data->use_alt_mode = nir->info.is_arb_asm;
 
    crocus_setup_uniforms(compiler, mem_ctx, nir, prog_data, &system_values,
                          &num_system_values, &num_cbufs);
@@ -1829,7 +1829,7 @@ crocus_compile_fs(struct crocus_context *ice,
 
    nir_shader *nir = nir_shader_clone(mem_ctx, ish->nir);
 
-   prog_data->use_alt_mode = ish->use_alt_mode;
+   prog_data->use_alt_mode = nir->info.is_arb_asm;
 
    crocus_setup_uniforms(compiler, mem_ctx, nir, prog_data, &system_values,
                          &num_system_values, &num_cbufs);
@@ -2695,10 +2695,6 @@ crocus_create_uncompiled_shader(struct pipe_context *ctx,
       update_so_info(&ish->stream_output, nir->info.outputs_written);
    }
 
-   /* Save this now before potentially dropping nir->info.name */
-   if (nir->info.name && strncmp(nir->info.name, "ARB", 3) == 0)
-      ish->use_alt_mode = true;
-
    if (screen->disk_cache) {
       /* Serialize the NIR to a binary blob that we can hash for the disk
        * cache.  Drop unnecessary information (like variable names)
diff --git a/src/gallium/drivers/iris/iris_context.h b/src/gallium/drivers/iris/iris_context.h
index d45c49c5ae0..f98987cf4dc 100644
--- a/src/gallium/drivers/iris/iris_context.h
+++ b/src/gallium/drivers/iris/iris_context.h
@@ -403,9 +403,6 @@ struct iris_uncompiled_shader {
    /** Have any shader variants been compiled yet? */
    bool compiled_once;
 
-   /** Should we use ALT mode for math?  Useful for ARB programs. */
-   bool use_alt_mode;
-
    bool needs_edge_flag;
 
    /* Whether shader uses atomic operations. */
diff --git a/src/gallium/drivers/iris/iris_program.c b/src/gallium/drivers/iris/iris_program.c
index 1071ac86c3d..b53bdd6d694 100644
--- a/src/gallium/drivers/iris/iris_program.c
+++ b/src/gallium/drivers/iris/iris_program.c
@@ -1279,7 +1279,7 @@ iris_compile_vs(struct iris_screen *screen,
       nir_shader_gather_info(nir, impl);
    }
 
-   prog_data->use_alt_mode = ish->use_alt_mode;
+   prog_data->use_alt_mode = nir->info.is_arb_asm;
 
    iris_setup_uniforms(compiler, mem_ctx, nir, prog_data, 0, &system_values,
                        &num_system_values, &num_cbufs);
@@ -1898,7 +1898,7 @@ iris_compile_fs(struct iris_screen *screen,
    nir_shader *nir = nir_shader_clone(mem_ctx, ish->nir);
    const struct iris_fs_prog_key *const key = &shader->key.fs;
 
-   prog_data->use_alt_mode = ish->use_alt_mode;
+   prog_data->use_alt_mode = nir->info.is_arb_asm;
 
    iris_setup_uniforms(compiler, mem_ctx, nir, prog_data, 0, &system_values,
                        &num_system_values, &num_cbufs);
@@ -2408,10 +2408,6 @@ iris_create_uncompiled_shader(struct iris_screen *screen,
       update_so_info(&ish->stream_output, nir->info.outputs_written);
    }
 
-   /* Save this now before potentially dropping nir->info.name */
-   if (nir->info.name && strncmp(nir->info.name, "ARB", 3) == 0)
-      ish->use_alt_mode = true;
-
    if (screen->disk_cache) {
       /* Serialize the NIR to a binary blob that we can hash for the disk
        * cache.  Drop unnecessary information (like variable names)