Because the pass already checks that the destination offset of each
'scan_inst' that needs to be rewritten matches 'inst->src[0].offset'
exactly, the final offset of the rewritten instruction is just the
original destination offset of the copy. This is in preparation for
adding support for sub-GRF offsets to the VEC4 IR.
---
src/mesa/drivers/dri/i965/brw_vec4.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp
b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index 8f8d262..470f814 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -1254,8 +1254,7 @@ vec4_visitor::opt_register_coalesce()
inst->src[0].swizzle);
scan_inst->dst.file = inst->dst.file;
scan_inst->dst.nr = inst->dst.nr;
- scan_inst->dst.offset = scan_inst->dst.offset % REG_SIZE +
- ROUND_DOWN_TO(inst->dst.offset, REG_SIZE);
+ scan_inst->dst.offset = inst->dst.offset;
if (inst->saturate &&
inst->dst.type != scan_inst->dst.type) {
/* If we have reached this point, scan_inst is a non
--
2.9.0
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