The scalar destination registers break copy propagation. Instead compute
the results to a regular register and then reference a component when we
later use the result as a source.
Signed-off-by: Kristian Høgsberg Kristensen <k...@bitplanet.net>
---
src/mesa/drivers/dri/i965/brw_fs_builder.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_builder.h
b/src/mesa/drivers/dri/i965/brw_fs_builder.h
index df10a9d..4a2c6d0 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_builder.h
+++ b/src/mesa/drivers/dri/i965/brw_fs_builder.h
@@ -391,13 +391,13 @@ namespace brw {
emit_uniformize(const src_reg &src) const
{
const fs_builder ubld = exec_all();
- const dst_reg chan_index = component(vgrf(BRW_REGISTER_TYPE_UD), 0);
- const dst_reg dst = component(vgrf(src.type), 0);
+ const dst_reg chan_index = vgrf(BRW_REGISTER_TYPE_UD);
+ const dst_reg dst = vgrf(src.type);
ubld.emit(SHADER_OPCODE_FIND_LIVE_CHANNEL, chan_index);
- ubld.emit(SHADER_OPCODE_BROADCAST, dst, src, chan_index);
+ ubld.emit(SHADER_OPCODE_BROADCAST, dst, src, component(chan_index,
0));
- return src_reg(dst);
+ return src_reg(component(dst, 0));
}
/**
--
2.6.2
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