diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index d57dd679356..d6d6955607a 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -504,6 +504,22 @@ bi_byte(bi_index idx, unsigned lane)
         return idx;
 }
 
+static inline bi_index
+bi_abs(bi_index idx)
+{
+        assert(idx.type != BI_INDEX_CONSTANT);
+        idx.abs = true;
+        return idx;
+}
+
+static inline bi_index
+bi_neg(bi_index idx)
+{
+        assert(idx.type != BI_INDEX_CONSTANT);
+        idx.neg ^= true;
+        return idx;
+}
+
 static inline bi_index
 bi_imm_u8(uint8_t imm)
 {