ir3: fix predicate splitting in scheduler

Fix up src->def->instr, not src->instr.

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7014
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18096>

diff --git a/src/freedreno/ir3/ir3.h b/src/freedreno/ir3/ir3.h
index c23d3af..222eb61 100644 (file)
--- a/src/freedreno/ir3/ir3.h
+++ b/src/freedreno/ir3/ir3.h
@@ -196,8 +196,8 @@ struct ir3_register {
       } array;
    };
 
-   /* For IR3_REG_DEST, pointer back to the instruction containing this
-    * register.
+   /* For IR3_REG_SSA, dst registers contain pointer back to the instruction
+    * containing this register.
     */
    struct ir3_instruction *instr;
 

diff --git a/src/freedreno/ir3/ir3_sched.c b/src/freedreno/ir3/ir3_sched.c
index 91c43de..80de9f5 100644 (file)
--- a/src/freedreno/ir3/ir3_sched.c
+++ b/src/freedreno/ir3/ir3_sched.c
@@ -992,7 +992,7 @@ split_pred(struct ir3_sched_ctx *ctx)
             /* original pred is scheduled, but new one isn't: */
             new_pred->flags &= ~IR3_INSTR_MARK;
          }
-         predicated->srcs[0]->instr = new_pred;
+         predicated->srcs[0]->def->instr = new_pred;
          /* don't need to remove old dag edge since old pred is
           * already scheduled:
           */