diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp index e670ba79c18..bf1da9d4588 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp @@ -605,6 +605,12 @@ fs_visitor::try_rewrite_rhs_to_dst(ir_assignment *ir, !src.equals(&last_rhs_inst->dst)) return false; + /* If last_rhs_inst wrote a different number of components than our LHS, + * we can't safely rewrite it. + */ + if (ir->lhs->type->vector_elements != last_rhs_inst->regs_written()) + return false; + /* Success! Rewrite the instruction. */ last_rhs_inst->dst = dst; |