ir3: add ir3_compiler::has_alias

Flag to detect support for alias.rt/alias.tex available in a7xx.

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31222>

src/freedreno/ir3/ir3_compiler.c

@@ -157,6 +157,7 @@ ir3_compiler_create(struct fd_device *dev, const struct fd_dev_id *dev_id,
    compiler->bitops_can_write_predicates = false;
    compiler->has_branch_and_or = false;
    compiler->has_rpt_bary_f = false;
+   compiler->has_alias = false;
 
    if (compiler->gen >= 6) {
       compiler->samgq_workaround = true;
@@ -232,6 +233,10 @@ ir3_compiler_create(struct fd_device *dev, const struct fd_dev_id *dev_id,
       compiler->has_shfl = true;
       compiler->reading_shading_rate_requires_smask_quirk =
          dev_info->a7xx.reading_shading_rate_requires_smask_quirk;
+
+      if (compiler->gen >= 7) {
+         compiler->has_alias = true;
+      }
    } else {
       compiler->max_const_pipeline = 512;
       compiler->max_const_geom = 512;

src/freedreno/ir3/ir3_compiler.h

@@ -282,6 +282,9 @@ struct ir3_compiler {
    /* True if (rptN) is supported for bary.f. */
    bool has_rpt_bary_f;
 
+   /* True if alias.tex and alias.rt are supported. */
+   bool has_alias;
+
    bool reading_shading_rate_requires_smask_quirk;
 };