diff options
Diffstat (limited to 'src/intel/compiler/brw_vec4_cse.cpp')
| -rw-r--r-- | src/intel/compiler/brw_vec4_cse.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/intel/compiler/brw_vec4_cse.cpp b/src/intel/compiler/brw_vec4_cse.cpp index 2e65ef78548..d9f08c96317 100644 --- a/src/intel/compiler/brw_vec4_cse.cpp +++ b/src/intel/compiler/brw_vec4_cse.cpp @@ -112,6 +112,14 @@ operands_match(const vec4_instruction *a, const vec4_instruction *b) } } +/** + * Checks if instructions match, exactly for sources, but loosely for + * destination writemasks. + * + * \param 'a' is the generating expression from the AEB entry. + * \param 'b' is the second occurrence of the expression that we're + * considering eliminating. + */ static bool instructions_match(vec4_instruction *a, vec4_instruction *b) { @@ -127,7 +135,7 @@ instructions_match(vec4_instruction *a, vec4_instruction *b) a->base_mrf == b->base_mrf && a->header_size == b->header_size && a->shadow_compare == b->shadow_compare && - a->dst.writemask == b->dst.writemask && + ((a->dst.writemask & b->dst.writemask) == a->dst.writemask) && a->force_writemask_all == b->force_writemask_all && a->size_written == b->size_written && a->exec_size == b->exec_size && |