agx: Add agx_prev_block helper

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

diff --git a/src/asahi/compiler/agx_compiler.h b/src/asahi/compiler/agx_compiler.h
index 562a537..a3c71a7 100644 (file)
--- a/src/asahi/compiler/agx_compiler.h
+++ b/src/asahi/compiler/agx_compiler.h
@@ -602,6 +602,12 @@ agx_predecessor_index(agx_block *succ, agx_block *pred)
    unreachable("Invalid predecessor");
 }
 
+static inline agx_block *
+agx_prev_block(agx_block *ins)
+{
+   return list_last_entry(&(ins->link), agx_block, link);
+}
+
 static inline agx_instr *
 agx_prev_op(agx_instr *ins)
 {