[Mesa-dev] [PATCH 7/7] i965/fs: Lower 64-bit MOV operations

[Matt Turner]

FINISHME: Lower them in NIR instead?
---
 src/intel/compiler/brw_fs.cpp | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 69726ed70e8..9e50df59356 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -2403,9 +2403,28 @@ fs_visitor::opt_algebraic()
 {
    bool progress = false;
 
-   foreach_block_and_inst(block, fs_inst, inst, cfg) {
+   foreach_block_and_inst_safe(block, fs_inst, inst, cfg) {
       switch (inst->opcode) {
       case BRW_OPCODE_MOV:
+         if (!devinfo->has_64bit_types &&
+             (inst->dst.type == BRW_REGISTER_TYPE_DF ||
+              inst->dst.type == BRW_REGISTER_TYPE_UQ ||
+              inst->dst.type == BRW_REGISTER_TYPE_Q)) {
+            assert(inst->dst.type == inst->src[0].type);
+            assert(!inst->saturate);
+            assert(!inst->src[0].abs);
+            assert(!inst->src[0].negate);
+            const brw::fs_builder ibld(this, block, inst);
+
+            ibld.MOV(subscript(inst->dst, BRW_REGISTER_TYPE_UD, 1),
+                     subscript(inst->src[0], BRW_REGISTER_TYPE_UD, 1));
+            ibld.MOV(subscript(inst->dst, BRW_REGISTER_TYPE_UD, 0),
+                     subscript(inst->src[0], BRW_REGISTER_TYPE_UD, 0));
+
+            inst->remove(block);
+            progress = true;
+         }
+
          if (inst->src[0].file != IMM)
             break;
 
-- 
2.16.4