From: Francisco Jerez <currojerez@riseup.net>
Date: Fri, 2 Sep 2016 05:04:02 +0000 (-0700)
Subject: i965/vec4: Compare full register offsets in opt_register_coalesce nop move check.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1bb5074474445ea9f54d0f52383f99ac0fa6128f;p=mesa.git

i965/vec4: Compare full register offsets in opt_register_coalesce nop move check.

In preparation for adding support for sub-GRF offsets to the VEC4 IR.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index f97de185985..d9dbc4c8543 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -1098,7 +1098,7 @@ vec4_visitor::opt_register_coalesce()
       /* Remove no-op MOVs */
       if (inst->dst.file == inst->src[0].file &&
           inst->dst.nr == inst->src[0].nr &&
-          inst->dst.offset / REG_SIZE == inst->src[0].offset / REG_SIZE) {
+          inst->dst.offset == inst->src[0].offset) {
          bool is_nop_mov = true;
 
          for (unsigned c = 0; c < 4; c++) {