Cc: mesa-sta...@lists.freedesktop.org
---
src/intel/compiler/brw_fs.cpp | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index ef36af9..56455e9 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -3480,8 +3480,14 @@ fs_visitor::lower_integer_multiplication()
* schedule multi-component multiplications much better.
*/
+ bool needs_mov = false;
fs_reg orig_dst = inst->dst;
- if (orig_dst.is_null() || orig_dst.file == MRF) {
+ if (orig_dst.is_null() || orig_dst.file == MRF ||
+ regions_overlap(inst->dst, inst->size_written,
+ inst->src[0], inst->size_read(0)) ||
+ regions_overlap(inst->dst, inst->size_written,
+ inst->src[1], inst->size_read(1))) {
+ needs_mov = true;
inst->dst = fs_reg(VGRF, alloc.allocate(dispatch_width / 8),
inst->dst.type);
}
@@ -3512,7 +3518,7 @@ fs_visitor::lower_integer_multiplication()
subscript(low, BRW_REGISTER_TYPE_UW, 1),
subscript(high, BRW_REGISTER_TYPE_UW, 0));
- if (inst->conditional_mod || orig_dst.file == MRF) {
+ if (needs_mov || inst->conditional_mod) {
set_condmod(inst->conditional_mod,
ibld.MOV(orig_dst, inst->dst));
}
--
2.5.0.400.gff86faf
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