From: Daniel Schürmann <daniel@schuermann.dev>
Date: Fri, 8 May 2020 15:18:15 +0000 (+0100)
Subject: aco: don't move create_vector subdword operands to unsupported register offsets
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=acec00eae0604dd439a665f2ae8942c16d057853;p=mesa.git

aco: don't move create_vector subdword operands to unsupported register offsets

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5070>
---

diff --git a/src/amd/compiler/aco_register_allocation.cpp b/src/amd/compiler/aco_register_allocation.cpp
index 07b5130aa63..d296e61de50 100644
--- a/src/amd/compiler/aco_register_allocation.cpp
+++ b/src/amd/compiler/aco_register_allocation.cpp
@@ -551,7 +551,7 @@ bool get_regs_for_copies(ra_ctx& ctx,
                   PhysReg reg(def_reg_lo);
                   reg.reg_b += offset;
                   assert(!reg_file.test(reg, var.rc.bytes()));
-                  res = {reg, true};
+                  res = {reg, reg.byte() == 0 || instr_can_access_subdword(ctx, instr)};
                   break;
                }
             }