pan/bi: Add bi_emit_before helper

For BIR lowering passes.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4276>

diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index d7d80d5c8a95cdc5ba7f3fe812b7b45f0841eb3b..178346146729e0d8a967b37f0abdbdc5fa25e1a3 100644 (file)
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -366,6 +366,15 @@ bi_emit(bi_context *ctx, bi_instruction ins)
         return u;
 }
 
+static inline bi_instruction *
+bi_emit_before(bi_context *ctx, bi_instruction *tag, bi_instruction ins)
+{
+        bi_instruction *u = rzalloc(ctx, bi_instruction);
+        memcpy(u, &ins, sizeof(ins));
+        list_addtail(&u->link, &tag->link);
+        return u;
+}
+
 static inline void
 bi_remove_instruction(bi_instruction *ins)
 {