i965: Replace HW_REG with ARF/FIXED_GRF.

HW_REGs are (were!) kind of awful. If the file was HW_REG, you had to
look at different fields for type, abs, negate, writemask, swizzle, and
a second file. They also caused annoying problems like immediate sources
being considered scheduling barriers (commit 6148e94e2) and other such
nonsense.

Instead use ARF/FIXED_GRF/MRF for fixed registers in those files.

After a sufficient amount of time has passed since "GRF" was used, we
can rename FIXED_GRF -> GRF, but doing so now would make rebasing awful.

Reviewed-by: Emil Velikov <emil.velikov@collabora.co.uk>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
index cb01833..426ea57 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
@@ -387,7 +387,8 @@ fs_visitor::try_copy_propagate(fs_inst *inst, int arg, acp_entry *entry)
    switch (entry->src.file) {
    case UNIFORM:
    case BAD_FILE:
-   case HW_REG:
+   case ARF:
+   case FIXED_GRF:
       inst->src[arg].reg_offset = entry->src.reg_offset;
       inst->src[arg].subreg_offset = entry->src.subreg_offset;
       break;