diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 66bbdbe80e..ed973f428f 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -3059,6 +3059,8 @@ fs_visitor::register_coalesce() inst->dst.type != inst->src[0].type) continue; + bool has_source_modifiers = inst->src[0].abs || inst->src[0].negate; + /* Found a move of a GRF to a GRF. Let's see if we can coalesce * them: check for no writes to either one until the exit of the * program. @@ -3083,6 +3085,14 @@ fs_visitor::register_coalesce() break; } } + + /* The gen6 MATH instruction can't handle source modifiers, so avoid + * coalescing those for now. We should do something more specific. + */ + if (intel->gen == 6 && scan_inst->is_math() && has_source_modifiers) { + interfered = true; + break; + } } if (interfered) { continue; |