diff options
| author | Juha-Pekka Heikkila <[email protected]> | 2014-03-28 15:28:32 +0200 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2014-04-16 22:46:45 -0700 |
| commit | da0c3b02e71c7552ba9324a01a73602094105fcc (patch) | |
| tree | 2c824fff74dfc48f1a6a058eacfd797e770865d3 | |
| parent | 2dfbbeca50b95ccdd714d9baa4411c779f6a20d9 (diff) | |
i965/fs: Add support for the MAC instruction.
This allows us to generate the MAC (multiply-accumulate) instruction,
which can be used to implement some expressions in fewer instructions
than doing a series of MUL and ADDs.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Signed-off-by: Juha-Pekka Heikkila <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 075857f7425..c550c412229 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -196,6 +196,7 @@ ALU3(MAD) ALU2_ACC(ADDC) ALU2_ACC(SUBB) ALU2(SEL) +ALU2(MAC) /** Gen4 predicated IF. */ fs_inst * diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp index 1cf35b40ad2..c6b4aae4087 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp @@ -1545,6 +1545,9 @@ fs_generator::generate_code(exec_list *instructions, FILE *dump_file) assert(brw->gen >= 7); brw_SUBB(p, dst, src[0], src[1]); break; + case BRW_OPCODE_MAC: + brw_MAC(p, dst, src[0], src[1]); + break; case BRW_OPCODE_BFE: assert(brw->gen >= 7); |