From b39b82dfbd85c4a69a1b37d477cb859b50cb149a Mon Sep 17 00:00:00 2001
From: Connor Abbott <cwabbott0@gmail.com>
Date: Tue, 25 Jun 2024 06:29:18 -0400
Subject: [PATCH] ir3: Don't consider r63.x as a GPR

We have to be careful here because r63.x is also used to mean "register
not assigned yet," but dummy destinations for prefetches will use r63.x
and we don't want them to count as GPRs when determining whether to
enable early preamble.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29873>
---
 src/freedreno/ir3/ir3.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/freedreno/ir3/ir3.h b/src/freedreno/ir3/ir3.h
index a45eae03120..dd5e32d6955 100644
--- a/src/freedreno/ir3/ir3.h
+++ b/src/freedreno/ir3/ir3.h
@@ -1369,6 +1369,9 @@ is_reg_gpr(const struct ir3_register *reg)
 {
    if ((reg_num(reg) == REG_A0) || (reg->flags & IR3_REG_PREDICATE))
       return false;
+   if (!(reg->flags & (IR3_REG_SSA | IR3_REG_RELATIV)) &&
+       reg->num == INVALID_REG)
+      return false;
    return true;
 }