pan/midgard: Add OP_R27_ONLY helper

While load/store ops like st_vary can take an argument in either
r26/r27, ops like those for perspective projection must specifically
take their argument in r27.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

diff --git a/src/panfrost/midgard/helpers.h b/src/panfrost/midgard/helpers.h
index 81d10936201a46dce9751866d19174308663890a..8b3e417a56d22f3083369c13008807c8aef8809d 100644 (file)
--- a/src/panfrost/midgard/helpers.h
+++ b/src/panfrost/midgard/helpers.h
@@ -46,6 +46,11 @@
                 op == midgard_op_st_cubemap_coords \
        )
 
+#define OP_IS_R27_ONLY(op) ( \
+                op == midgard_op_ldst_perspective_division_z || \
+                op == midgard_op_ldst_perspective_division_w \
+        )
+
 #define OP_IS_MOVE(op) ( \
                 op == midgard_alu_op_fmov || \
                 op == midgard_alu_op_imov \